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Modification of the microclimate and water balance through the integration of trees into temperate cropping systems Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-24 Suzanne R. Jacobs, Heidi Webber, Wiebke Niether, Kathrin Grahmann, Dietmar Lüttschwager, Carmen Schwartz, Lutz Breuer, Sonoko D. Bellingrath-Kimura
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Attributing differences of solar-induced chlorophyll fluorescence (SIF)-gross primary production (GPP) relationships between two C4 crops: corn and miscanthus Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-21 Genghong Wu, Kaiyu Guan, Chongya Jiang, Hyungsuk Kimm, Guofang Miao, Carl J. Bernacchi, Caitlin E. Moore, Elizabeth A. Ainsworth, Xi Yang, Joseph A. Berry, Christian Frankenberg, Min Chen
There remains limited information to characterize the solar-induced chlorophyll fluorescence (SIF)-gross primary production (GPP) relationship in C4 cropping systems. The annual C4 crop corn and perennial C4 crop miscanthus differ in phenology, canopy structure and leaf physiology. Investigating the SIF-GPP relationships in these species could deepen our understanding of SIF-GPP relationships within
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Growing season carbon dynamics differ in intermediate wheatgrass monoculture versus biculture with red clover Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-21 Susanne Wiesner, Alison J. Duff, Kristine Niemann, Ankur R. Desai, Timothy E. Crews, Valentin Picasso Risso, Heathcliffe Riday, Paul C. Stoy
Perennial crops can improve the ecological and economic sustainability of agroecosystems because of their potential to provide diverse ecosystem services including carbon storage. Intermediate wheatgrass (IWG; Thinopyrum intermedium) is a stress-tolerant grain and forage species that can be grown in bicultures with legumes for symbiotic nitrogen fixation that provide additional ecosystem services but
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Atmospheric factors outweigh species traits and soil properties in explaining spatiotemporal variation in water-use efficiency of tropical and subtropical forest species Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-20 Songbo Tang, Hilary Rose Dawson, Lucas C.R. Silva, Josep Peñuelas, Jordi Sardans, Hans Lambers, Feiyan Zeng, Yuan Lai, Yanlong Jia, Guoyi Zhou, Yunting Fang, Ying Tu, Dan Xi, Dianxiang Zhang, Yuanwen Kuang
Intrinsic water-use efficiency (iWUE) is a key physiological trait; however, the spatiotemporal variation in iWUE and which factors affect iWUE in the tropics and subtropics are poorly known. We determined the temporal (1920-2010) and spatial patterns of iWUE using leaf carbon-isotopic composition (δ13C) of 1,811 herbarium specimens and associated these patterns with environmental factors across biomes
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Modelling alteration of leaf coloration peak date in Cotinus coggygria in a high-elevation karst region Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-20 Xing Tan, Lan Gao, Weihan Wang, Wen Zhang, Jing Wei, Jingru Wang, Linke Li, Qiang Zhou, Honghai Liang, Yun Liu
The importance of deciduous plants’ autumn phenological phase is reflected not only in the material cycle but also in the fall foliage ecotourism industry. However, the lack of observation data has made it difficult to model the phase of deciduous plants in the high-elevation karst region. Based on the data between 2001 and 2020, methods including multiple linear regression, multivariate binomial regression
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Contrasting trends between peak photosynthesis timing and peak greenness timing across seven typical biomes in Northern Hemisphere mid-latitudes Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-20 Zhongxi Ge, Jing Huang, Xufeng Wang, Xuguang Tang, Lei Fan, Yinjun Zhao, Mingguo Ma
The peak photosynthesis timing (PPT) is a key factor that affects the seasonality of the terrestrial carbon uptake. Carbon phenology derived from gross primary production (GPP) has been used to validate the peak greenness timing (PGT) from satellite-based vegetation indices (VIs) in phenology research. However, PPT, derived from GPP, has not been comprehensively analyzed, especially taking different
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Response of a U.S. rice hybrid variety to high heat at Two CO2 concentrations during anthesis and grainfill Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-17 David H. Fleisher, Jinyoung Y. Barnaby, Sanai Li, Dennis Timlin
Changing climate conditions are influencing quality and yield of the United States rice (Oryza sativa L.) export industry. The occurrence of high heat episodes, along with rising atmospheric carbon dioxide (CO2), is of particular concern for as-yet uncharacterized hybrid varieties. A popular rice hybrid was grown in soil-plant-atmosphere-research (SPAR) chambers under two CO2 levels (450 or 740 ppm)
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Evergreen broadleaf greenness and its relationship with leaf flushing, aging, and water fluxes Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-18 Yunpeng Luo, Javier Pacheco-Labrador, Andrew D. Richardson, Bijan Seyednasrollah, Oscar Perez-Priego, Rosario Gonzalez-Cascon, M. Pilar Martín, Gerardo Moreno, Richard Nair, Thomas Wutzler, Solveig Franziska Bucher, Arnaud Carrara, Edoardo Cremonese, Tarek S. El-Madany, Gianluca Filippa, Marta Galvagno, Tiana Hammer, Xuanlong Ma, Mirco Migliavacca
Remote sensing capabilities to monitor evergreen broadleaved vegetation are limited by the low temporal variability in the greenness signal. With canopy greenness computed from digital repeat photography (PhenoCam), we investigated how canopy greenness related to seasonal changes in leaf age and traits as well as variation of trees’ water fluxes (characterized by sap flow and canopy conductance). The
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Combining multi-indicators with machine-learning algorithms for maize yield early prediction at the county-level in China Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-18 Minghan Cheng, Josep Penuelas, Matthew F McCabe, Clement Atzberger, Xiyun Jiao, Wenbin Wu, Xiuliang Jin
The accurate and timely prediction of crop yield at a large scale is important for food security and the development of agricultural policy. An adaptable and robust method for estimating maize yield for the entire territory of China, however, is currently not available. The inherent trade-off between early estimates of yield and the accuracy of yield prediction also remains a confounding issue. To
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Stumps increased soil respiration in a subtropical Moso bamboo (Phyllostachys edulis) plantation under nitrogen addition Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-18 Quan Li, Qiuhui Ma, Jinpei Gao, Junbo Zhang, Yongfu Li, Man Shi, Changhui Peng, Xinzhang Song
Stumps are a key component of managed forest ecosystems, but their role in ecosystem respiration is poorly understood and commonly ignored. Nitrogen (N) addition can affect soil respiration, yet only a few studies have assessed the effect of stumps on soil respiration in intensively managed forests under increasing N deposition. Here, we report the results of a 7-year field experiment to investigate
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Effects of tree diversity on canopy space occupation vary with tree size and canopy space definition in a mature broad-leaved forest Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-19 Louis Georgi, Matthias Kunz, Andreas Fichtner, Anne Bienert, Hans-Gerd Maas, Goddert von Oheimb
A more efficient use of limited canopy space and, thus, a higher canopy space occupation (CSO) in forests can result in an increased absorption of photosynthetically active radiation, which in turn can promote productivity. Although there is some evidence for a positive relationship between tree diversity (TD) and CSO, the generality of this hypothesis is still under debate. Here, we propose a conceptual
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Implementation and calibration of short-rotation eucalypt plantation module within the ECOSMOS land surface model Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-15 Michel Anderson Almeida Colmanetti, Santiago Vianna Cuadra, Rubens Augusto Camargo Lamparelli, Jair Bortolucci Júnior, Osvaldo Machado Rodrigues Cabral, Otávio Camargo Campoe, Daniel de Castro Victoria, Luís Gustavo Barioni, Marcelo Valadares Galdos, Gleyce Kelly Dantas Araujo Figueiredo, Guerric le Maire
Eucalypt is one of the most-planted broadleaf genera around the globe, exhibiting high yield, plasticity and growing capacity on a broad range of environments. The main objective of this study is to present the integration of a specific module for eucalypt short-rotation plantations into ECOSMOS (Ecosystem Model Simulator). Different calibrations and validations, from intensively monitored sites, experimental
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Monitoring drought impacts on crop productivity of the U.S. Midwest with solar-induced fluorescence: GOSIF outperforms GOME-2 SIF and MODIS NDVI, EVI, and NIRv Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-11 Ruonan Qiu, Xing Li, Ge Han, Jingfeng Xiao, Xin Ma, Wei Gong
The frequency and severity of drought are increasing in the context of global warming. Elucidating the responses of crop productivity to drought is essential for informing agricultural management and ensuring food security. Here we used satellite-derived solar-induced chlorophyll fluorescence (SIF) data and vegetation indices to evaluate the impacts of the 2012 drought on crop productivity in the U
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Photosynthesis phenology, as defined by solar-induced chlorophyll fluorescence, is overestimated by vegetation indices in the extratropical Northern Hemisphere Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-09 Anping Chen, Fandong Meng, Jiafu Mao, Daniel Ricciuto, Alan K. Knapp
Vegetation phenology is highly sensitive to climate change, although the data and methods used to estimate key phenological states can influence this sensitivity. Because of its direct relation to leaf photosynthetic carbon uptake, remotely sensed solar-induced chlorophyll fluorescence (SIF) can provide new insight assessing changes in vegetation phenology. Here, we investigated the potential of using
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Physical mechanism of vertical gradient of pressure flux and its impact on turbulent flux estimation Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-10 Zhuorui Wei, Hongsheng Zhang, Xuhui Cai, Yu Song
Using multi-layer pressure fluctuations and other conventional turbulence observational data over a nearly flat and homogeneous dune underlying surface, the temporal and spatial characteristics of pressure flux and its profile were analyzed to illustrate the physical mechanism of pressure flux convergence/divergence and the impact of pressure transport terms on the estimation of turbulent fluxes in
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Late frost as a driver of ecotypic differentiation in sugar maple: Implications for assisted migration Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-10 Qiao Zeng, Benjamin Marquis, Sylvain Delagrange, Ping Zhou, Shaoxiong Yuan, Jean-Daniel Sylvain, Patricia Raymond, Sergio Rossi
Global warming advances bud break, mismatches plant phenology from the local climate, and exposes the developing leaves to higher risks of frost damage. Bud break of sugar maple [Acer saccharum (Marsh.)], a species included in recent programs of assisted migration, is sensitive to nighttime spring temperatures. This suggests a link between frost events and leaf development. In this study, we raise
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Effects of variable temperature and moisture conditions on respiration and nonstructural carbohydrate dynamics of tree roots Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-10 Kira Ryhti, Pauliina Schiestl-Aalto, Yu Tang, Katja T. Rinne-Garmston, Yiyang Ding, Jukka Pumpanen, Christina Biasi, Matthias Saurer, Jaana Bäck, Liisa Kulmala
In warming climates, soil water content (SWC) may act as an important factor in determining belowground carbon dynamics in boreal forests. Here, we estimated the respiration and nonstructural carbohydrate (NSC) concentrations of tree roots in a mature Scots pine (Pinus sylvestris L.) stand in southern Finland during two growing seasons with contrasting weather conditions. Root respiration was estimated
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Evaluating the impact of different normalization strategies on the construction of drought condition indices Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-10 Hongyan Zhang, Guoying Yin, Liangpei Zhang
Drought condition indices (CIs), including single condition (SCIs) and combined condition indices (CCIs), can reveal the characteristics of drought evolution and have been widely used in drought monitoring tasks. However, in practical applications, CIs are constructed in different normalization methods rather than based on a uniform standard. The diversely constructed CIs not only mislead the scientific
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Hemiboreal forests’ CO2 fluxes response to the European 2018 heatwave Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-09 A. Krasnova, Ü. Mander, S.M. Noe, V. Uri, D. Krasnov, K. Soosaar
In summer 2018, Europe experienced a heatwave that impacted the forest carbon cycle. We assessed the influence of elevated temperatures on the carbon exchange of three forest stands of different types (coniferous, deciduous, and conifer-broadleaved) and a clear-cut area located in the geographical vicinity within a hemiboreal zone. The carbon fluxes were calculated using the eddy-covariance technique
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Quantifying canopy conductance in a pine forest during drought from combined sap flow and canopy surface temperature measurements Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-09 Tom Taborski, Jean-Christophe Domec, Christophe Chipeaux, Nicolas Devert, Sébastien Lafont, Lisa Wingate, Denis Loustau
Precise determination of canopy conductance (gs) is needed to quantify the water loss and CO2 exchange from forest canopies and their response to changing environmental conditions. In this study, we combined measurements of the leaf-to-air vapour pressure difference (DL) derived from canopy surface temperature, and tree transpiration to calculate canopy gs in a pine forest at the ICOS site FR-Bil.
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Corrigendum to Historical and future spatially-explicit climate change impacts on mycorrhizal and saprotrophic macrofungal productivity in Mediterranean pine forests Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-07 Albert Morera, Juan Martínez de Aragón, Miquel De Cáceres, José Antonio Bonet, Sergio de-Miguel
Abstract not available
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A canopy photosynthesis model based on a highly generalizable artificial neural network incorporated with a mechanistic understanding of single-leaf photosynthesis Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-08 Takahiro Kaneko, Koichi Nomura, Daisuke Yasutake, Tadashige Iwao, Takashi Okayasu, Yukio Ozaki, Makito Mori, Tomoyoshi Hirota, Masaharu Kitano
Crop productivity is largely dependent on canopy photosynthesis, which is difficult to measure at farming sites. Therefore, real-time estimation of the canopy photosynthetic rate (Ac) is expected to facilitate effective farm management. For the estimation of Ac, two types of mathematical models (i.e., process-based models and empirical models) have been used, although both types have their own weaknesses
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A strong temperature dependence of soil nitric oxide emission from a temperate forest in Northeast China Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-07 Kai Huang, Chenxia Su, Dongwei Liu, Yihang Duan, Ronghua Kang, Haoming Yu, Yuqi Liu, Xue Li, Geshere Abdisa Gurmesa, Zhi Quan, Jesper Riis Christiansen, Weixing Zhu, Yunting Fang
Nitric oxide (NO) is a highly reactive trace gas affecting atmospheric chemistry and air quality. Although forest soils have been recognized as an important source of atmospheric NO, there are large uncertainties in global forest soil NO emission inventories (ranged from 0.03 to 8.00 kg N ha−1, averaged 1.34 ± 0.28 kg N ha−1), partly due to the paucity of high-frequency monitoring from unmanaged forests
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Potential of UAV-based sun-induced chlorophyll fluorescence to detect water stress in sugar beet Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-06 Na Wang, Jan G.P.W. Clevers, Sebastian Wieneke, Harm Bartholomeus, Lammert Kooistra
Sun-induced chlorophyll fluorescence (SIF) is a direct indicator of plant photosynthetic activities and can potentially indicate plant physiological changes caused by water stress. However, the direct effect of water stress on the physiological SIF responses in crops at the field level still needs further research to clearly understand the involved mechanisms. To study this relationship, we made use
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Microclimate temperature variations from boreal forests to the tundra Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-06 Juha Aalto, Vilna Tyystjärvi, Pekka Niittynen, Julia Kemppinen, Tuuli Rissanen, Hilppa Gregow, Miska Luoto
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Soil moisture determines the effects of climate warming on spring phenology in grasslands Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-06 Zunchi Liu, Yongshuo H. Fu, Xinrong Shi, T. Ryan Lock, Robert L. Kallenbach, Zhiyou Yuan
Spring vegetation phenology is highly sensitive to global change. However, the effects of ongoing climate warming and N deposition on grassland spring phenology and how abiotic and biotic factors modulate such effects remain unclear. Here, we conducted a factorial field experiment of warming and N addition in three types of grasslands with varying aridity indices (0.20–0.39) in Inner Mongolia, China
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On the leaf inclination angle distribution as a plant trait for the most abundant broadleaf tree species in Europe Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-04 Jan Pisek, Eugenio Diaz-Pines, Giorgio Matteucci, Steffen Noe, Corinna Rebmann
Leaf angle distribution influences forest canopy processes like radiation balance, photosynthesis, and evapotranspiration. Indeed, a strong sensitivity to variability in the leaf angle distribution is reported for many models. Difficulties in conducting leaf angle distribution measurements limit data availability and explanations of its species-specific phenology and variation across environmental
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A semi-mechanistic model for predicting daily variations in species-level live fuel moisture content Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-03 Rodrigo Balaguer-Romano, Rubén Díaz-Sierra, Miquel De Cáceres, Àngel Cunill-Camprubí, Rachael H. Nolan, Matthias M. Boer, Jordi Voltas, Víctor Resco de Dios
Live Fuel Moisture Content (LFMC) is one of the main factors affecting forest ignitability as it determines the availability of existing live fuel to burn. Currently, LFMC is monitored through spectral vegetation indices or inferred from meteorological drought indices. While useful, neither approach provides mechanistic insights into species-specific LFMC variation and they are limited in the ability
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Real-time automatic detection of starch particles in ambient air Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-06-03 Branko Šikoparija, Predrag Matavulj, Gordan Mimić, Matt Smith, Łukasz Grewling, Zorica Podraščanin
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Daily fluctuations in leaf temperature modulate the development of a foliar pathogen Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-30 Frédéric Bernard, Michaël Chelle, Alain Fortineau, Ons Riahi El Kamel, Sylvain Pincebourde, Ivan Sache, Frédéric Suffert
Thermal ecology studies on the ecophysiological responses of organisms to temperature involve two paradigms: physiological rates are driven by body temperature and not directly by the environmental temperature, and they are largely influenced not only by its mean but also its variance. These paradigms together have been largely applied to macro invertebrates and vertebrates but rarely to microorganisms
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More urban greenspace, lower temperature? Moving beyond net change in greenspace Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-29 Jing Wang, Weiqi Zhou
Urban heat islands (UHI) exacerbates the heat-related risk associated with global warming, increasing morbidity and mortality of urban residents. While the impacts of the spatial pattern of urban greenspace (UG) and its change on urban heat have been widely examined, there is less understanding of the aggregate effect of the change of UG- considering the loss and gain of UG simultaneously - on urban
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Vapour pressure deficit is the main driver of tree canopy conductance across biomes Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-28 Victor Flo, Jordi Martínez-Vilalta, Víctor Granda, Maurizio Mencuccini, Rafael Poyatos
We aim to identify the importance of vapour pressure deficit (VPD), soil water content (SWC) and photosynthetic photon flux density (PPFD) as drivers of tree canopy conductance, which is a key source of uncertainty for modelling vegetation responses under climate change. We use sap flow time series of 1858 trees in 122 sites from the SAPFLUXNET global database to obtain whole-tree canopy conductance
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Senescence in temperate broadleaf trees exhibits species-specific dependence on photoperiod versus thermal forcing Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-29 Minkyu Moon, Andrew D. Richardson, John O'Keefe, Mark A. Friedl
Incomplete understanding of the processes controlling senescence limits our ability to forecast how the timing of leaf senescence will change in coming decades. In this study, we use a hierarchical Bayesian model (HBM) in association with a 27+ year record of field observations for 12 temperate deciduous tree species collected at Harvard Forest in central Massachusetts to examine how variability in
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Changes in grassland phenology and growth rate, rather than diversity, drive biomass production after fire Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-28 Zunchi Liu, Kai Liu, Xinrong Shi, T. Ryan Lock, Robert L. Kallenbach, Zhiyou Yuan
Plant phenology and growth rate are sensitive bio-indicators of climate change and anthropogenic disturbances. Fire is widespread in many ecosystems worldwide. Understanding how plant growth varies in its response to fire disturbance is critical for fire management. Despite the effects of fire on various aspects of plant ecology, such as the composition and growth of vegetation, little is known about
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Study of turbulence behavior above two different crops Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-29 Lucia Curto, María I Gassmann, Mauro Covi, Natalia E Tonti
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Unusually warm winter seasons may compromise the performance of current phenology models – Predicting bloom dates in young apple trees with PhenoFlex Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-29 Eduardo Fernandez, Katja Schiffers, Carsten Urbach, Eike Luedeling
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The probability distribution of absorbed direct, diffuse, and scattered radiation in plant canopies with varying structure Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-25 Brian N. Bailey, Kaiming Fu
When applied to plant canopies, classical radiation theory for a turbid medium yields relatively simple expressions for average fluxes of absorbed radiation within an arbitrary volume of vegetation. However, due to the effects of shading and leaf angle, these averaging volumes usually contain a continuous distribution of leaf-level radiative fluxes ranging from full sun to full shade. These distributions
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Calibration and validation of phenological models for Biome-BGCMuSo in the grasslands of Tibetan Plateau using remote sensing data Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-25 Lei Zheng, Youcun Qi, Yijie Wang, Jie Peng, Zhangcai Qin
Modeling vegetation phenology is crucial to assessing how climate change impacts carbon cycles in terrestrial ecosystems. The process-based biogeochemical model Biome-BGCMuSo is widely used for simulating carbon and water storages and fluxes of grassland ecosystems. However, the lack of accurate phenological information, such as the start of the growing season (SOS), impedes better simulations of the
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Atmospheric jet stream variability reflects vegetation activity in Europe Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-26 Gabriele Messori, Minchao Wu, Giulia Vico, Vera Melinda Galfi
Jet streams are a key component of the climate system, whose dynamics couple closely to regional climate variability. Yet, the link between jet stream variability and vegetation activity has received little attention. Here, we leverage our understanding of the mid-latitude jet stream dynamics over the Euro-Atlantic sector to probe climate–vegetation interactions across Europe. We link indices related
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Fluorescence ratio and photochemical reflectance index as a proxy for photosynthetic quantum efficiency of photosystem II along a phosphorus gradient Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-25 Sebastian Wieneke, Manuela Balzarolo, Han Asard, Hamada Abd Elgawad, Josep Peñuelas, Uwe Rascher, Arne Ven, Melanie S. Verlinden, Ivan A. Janssens, Sara Vicca
Sun-induced chlorophyll fluorescence (SIF) is one of the most promising remote-sensing signals to assess spatio-temporal variation in photosynthesis. Yet, it has been shown that the positive linear relationship of SIF and photosynthesis, often reported from satellite and proximal remote sensing, is mainly driven by the amount of absorbed photosynthetic active radiation (APAR). By normalizing SIF by
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Decoupling of impact factors reveals the response of cash crops phenology to climate change and adaptive management practice Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-24 Jie Zhang, Yujie Liu
Variations in phenology are regarded as a dynamic bio-indicator of global climate change. Rising incomes and the shift toward a diverse diet have been increasing the cash crop demand. However, the response of cash crop phenology to climate change and adaptive management practice remains largely unknown. In this study, using phenology records from 1991 to 2010, we separate the effects of climatic factors
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LAI-NOS: An automatic network observation system for leaf area index based on hemispherical photography Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-22 Yunping Chen, Shuaifeng Jiao, Yuanlei Cheng, Haichang Wei, Lin Sun, Yuan Sun
The leaf area index (LAI) is an important indicator reflecting the growth status of vegetation and is widely used in agriculture, ecology, climate change, and other fields. The shortcomings of the currently available methods for manually measuring LAI include labor-intensive, low sampling frequency, and asynchronous data collection. Focusing on these issues, a LAI sensor based on hemispherical photogrammetry
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Impact of diffuse radiation on evapotranspiration and its coupling to carbon fluxes at global FLUXNET sites Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-20 Bin Wang, Xu Yue, Hao Zhou, Jun Zhu
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Climate change impact on the population dynamics of exotic pathogens: The case of the worldwide pathogen Phytophthora cinnamomi Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-21 María S. Serrano, María Ángeles Romero, Pablo Homet, Lorena Gómez-Aparicio
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Hyperspectral indices developed from the low order fractional derivative spectra can capture leaf dry matter content across a variety of species better Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-18 Jia Jin, Quan Wang
Leaf mass per area (LMA) is an important indicator of plant functioning and photosynthetic capacity and is critical for understanding plant physiology and ecosystem function. Despite detailed and continuous spectral information offered in hyperspectral reflectance, LMA remains a difficult leaf characteristic to be retrieved due to its complex constituents and overlapping absorptions with leaf water
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Using an IR camera to improve leaf area and temperature measurements: A new method for increasing the accuracy of photosynthesis-related parameters Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-18 Sheng Zhang, Lingling Zhang
Accurate measurements of leaf temperature and area are crucial to calculate leaf gas exchange parameters when using portable gas analysers such as the LI-6400 XT portable photosynthesis system (LI‐COR Inc., Lincoln, USA). The importance of leaf temperature data is well known for robust measurements, but there are still technical limitations in measuring it with full accuracy. Here we present a tentative
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Minimum temperature during the growing season limits the radial growth of timberline Schrenk spruce (P. schrenkiana) Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-17 Li Qin, Kexiang Liu, Huaming Shang, Tongwen Zhang, Shulong Yu, Ruibo Zhang
Representing the altitudinal limit of typical vegetation, the alpine timberline is a unique natural landscape that is also a sensitive indicator of the well-being of alpine ecosystems. Schrenk spruce (P. schrenkiana) is a tree species unique to arid Central Asia. In this study, we found that the P. schrenkiana can grow at elevations of up to 3600 m. To better understand how this species survives at
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A sentinel-2-based triangular vegetation index for chlorophyll content estimation Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-16 Binxiang Qian, Huichun Ye, Wenjiang Huang, Qiaoyun Xie, Yuhao Pan, Naichen Xing, Yu Ren, Anting Guo, Quanjun Jiao, Yubin Lan
Accurate estimation of chlorophyll content is important for diagnosing the physiological and phenological status of vegetation. Establishing the relationship between vegetation indices (VIs) and leaf chlorophyll content using remote sensing is crucial for large-scale earth observation. However, existing VIs for estimating chlorophyll content generally suffer from the saturation effect or depend on
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Comparison of high resolution observational and grid-interpolated weather data and application to thermal stress on herd average milk production traits in a temperate environment Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-16 Jackson M. Mbuthia, Anja Eggert, Norbert Reinsch
To study the effects of heat stress in dairy cattle, animal performance records are merged with weather data from nearby meteorological stations. However, the stations location and distribution may render them less reliable. Alternatively, weather information from several meteorological stations can be interpolated using empirical algorithms to produce gridded estimates of weather parameters at desired
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Drought-induced decoupling between carbon uptake and tree growth impacts forest carbon turnover time Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-16 Steven A. Kannenberg, Antoine Cabon, Flurin Babst, Soumaya Belmecheri, Nicolas Delpierre, Rossella Guerrieri, Justin T. Maxwell, Frederick C. Meinzer, David J.P. Moore, Christoforos Pappas, Masahito Ueyama, Danielle E.M. Ulrich, Steven L. Voelker, David R. Woodruff, William R.L. Anderegg
The ability of forests to withstand, and recover from, acute drought stress is a critical uncertainty regarding the impacts of climate change on the terrestrial carbon (C) cycle, but it is unclear how drought responses scale from individual trees to whole forests. Here, we assembled a dataset of tree-ring chronologies co-located within the footprint of eddy covariance towers across North America and
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Estimation of diurnal patterns of global solar radiation, temperature, relative humidity and wind speed from daily datasets at a humid tropical location Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-14 Olaniran J. Matthew
The primary focus of this study is to simulate, characterize and validate diurnal patterns of global solar radiation (GSR), temperature, relative humidity and wind speed from daily ground observations from 2017 to 2020 at Obafemi Awolowo University, Ile-Ife, Nigeria. The study also estimates diurnal variations of the meteorological parameters from three daily reanalyses (NASA, NCEP/NCAR and ERA5) and
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Vertical propagation of submeso and coherent structure in a tall and dense amazon forest in different stability conditions. PART II: Coherent structures analysis Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-11 Luca Mortarini, Cléo Q. Dias-Júnior, Otávio Acevedo, Pablo E.S. Oliveira, Anywhere Tsokankunku, Matthias Sörgel, Antônio Ocimar Manzi, Alessandro C. de Araújo, Daiane V. Brondani, Ivan Mauricio Cely Toro, Umberto Giostra, Daniela Cava
Observations of the vertical structure of the turbulent flow in different stability regimes above and within the Amazon Forest at the Amazon Tall Tower Observatory (ATTO) site have been presented in Part I. Here, the influence of stability on the inception and development of coherent structures is investigated. According to the mixing-layer analogy the coherent vortices that dominate the turbulent
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Vertical propagation of submeso and coherent structure in a tall and dense Amazon Forest in different stability conditions PART I: Flow structure within and above the roughness sublayer Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-12 Daniela Cava, Cléo Q. Dias-Júnior, Otávio Acevedo, Pablo E.S. Oliveira, Anywhere Tsokankunku, Matthias Sörgel, Antônio Ocimar Manzi, Alessandro C. de Araújo, Daiane V. Brondani, Ivan Mauricio Cely Toro, Luca Mortarini
Understanding the processes that govern the mixing and transport of scalars within and above the Amazon Forest is of great importance for many environmental applications. The impact of atmospheric stability on the roughness sublayer (RSL) as well as the influence on it by the processes in the overlying atmosphere are investigated using measurements collected at the Atmospheric Tall Tower Observatory
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Generating high-accuracy and cloud-free surface soil moisture at 1 km resolution by point-surface data fusion over the Southwestern U.S. Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-10 Shuzhe Huang, Xiang Zhang, Nengcheng Chen, Hongliang Ma, Jiangyuan Zeng, Peng Fu, Won-Ho Nam, Dev Niyogi
Surface soil moisture (SSM) is of great importance in understanding global climate change and studies related to environmental and earth science. However, neither of current SSM products or algorithms can generate SSM with High spatial resolution, High spatio-temporal continuity (cloud-free and daily), and High accuracy simultaneously (i.e., 3H SSM data). Without 3H SSM data, fine-scale environmental
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UAS-based high resolution mapping of evapotranspiration in a Mediterranean tree-grass ecosystem Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-08 Jake E. Simpson, Fenner H. Holman, Hector Nieto, Tarek S. El-Madany, Mirco Migliavacca, M. Pilar Martin, Vicente Burchard-Levine, Arnaud Cararra, Solveig Blöcher, Peter Fiener, Jed O. Kaplan
Understanding the impact of land use and land cover change on surface energy and water budgets is increasingly important in the context of climate change research. Eddy covariance (EC) methods are the gold standard for high temporal resolution measurements of water and energy fluxes, but cannot resolve spatial heterogeneity and are limited in scope to the tower footprint (few hundred meter range).
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Albedo on cropland: Field-scale effects of current agricultural practices in Northern Europe Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-06 Petra Sieber, Sepp Böhme, Niclas Ericsson, Per-Anders Hansson
Agricultural land use and management affect land surface albedo and thus the climate. Increasing the albedo of cropland could enhance reflection of solar radiation, counteracting the radiative forcing (RF) of greenhouse gases (GHGs) and local warming. However, knowledge is lacking on how agricultural practices affect albedo under local conditions, and on the benefits of individual practices. In this
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Detecting nighttime inversions in the interior of a Douglas fir canopy Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-06 Bart Schilperoort, Miriam Coenders-Gerrits, César Jiménez Rodríguez, Antoon van Hooft, Bas van de Wiel, Hubert Savenije
Despite the importance of forests in the water and carbon cycles, accurately measuring their contribution remains challenging, especially at night. During clear-sky nights current models and theories fail, as non-turbulent flows and spatial heterogeneity become more important. One of the standing issues is the ‘decoupling’ of the air masses in and above the canopy, where little turbulent exchange takes
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Applications of low-cost environmental monitoring systems for fine-scale abiotic measurements in forest ecology Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-07 JB Cannon, LT Warren, GC Ohlson, JK Hiers, M Shrestha, C Mitra, EM Hill, SJ Bradfield, TW Ocheltree
Ecological studies have long examined large-scale geographic gradients in abiotic conditions and their relationship to the structure and function of ecological systems, but many critical processes in forested systems are driven by abiotic gradients that vary at fine spatial and temporal scales. To adequately characterize fine scale microclimatic variability, intensive sampling is required that may
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Spatiotemporal variations in the ratio of transpiration to evapotranspiration and its controlling factors across terrestrial biomes Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-07 Ruochen Cao, Hui Huang, Genan Wu, Daorui Han, Zhiyun Jiang, Kai Di, Zhongmin Hu
Quantifying the ratio of transpiration (T) to evapotranspiration (ET), T/ET, is crucial for understanding and predicting the water cycle and energy balance between the land and atmosphere. Here, we used three well-validated ET partitioning models to estimate T/ET at global fluxnet sites. The models are the Shuttleworth-Wallace-Hu (SWH) model, the Priestley-Taylor Jet Propulsion Lab (PT-JPL) model,
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A warmer winter followed by a colder summer contributed to a longer recovery time in the high latitudes of Northeast China Agric. For. Meteorol. (IF 5.734) Pub Date : 2022-05-05 Ying Yao, Yanxu Liu, Bojie Fu, Yijia Wang, Yaping Wang, Peng Chen, Tianyu Zhan
A drought is an extreme moisture deficit event caused by meteorological factors that destroys the structure and function of ecosystems. The recovery time (RT) is a critical metric that describes the responses of ecosystems to drought. However, the factors influencing ecosystem RTs are still unclear at the seasonal scale, especially the influence of the climatic state and the biological processes behind