This paper presents statistical analyses and spatial interpretations of the rare earth elements (REE: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) distributions using geochemical database of soil compositions, and highlights future research needed in the field of REE in Cameroonian soils. Raster maps which depict spatial distributions of individual REE by the interpolation of uni-element

Recent investigations have supported the possibility of predicting soil water content (SWC) through a simplified soil water balance (WB) model fed with remotely sensed actual evapotranspiration (ETa) estimates. This approach, however, requires information on main soil features (i.e. depth, wilting point, field capacity) which are generally difficult to retrieve over large regions. The current paper

Including environmental covariates, when available, can be a valuable strategy for achieving higher soil predictive performance, but it is still unknown whether environmental data should be used either as covariates, combined with Vis-NIR spectra, to predict soil organic carbon (SOC) or as criteria to stratify a soil spectral library (SSL). We hypothesized that the performance of Vis-NIR spectroscopy

Excessive nitrogen (N) fertilization (ENF) and low utilization efficiency of fertilizer-derived N in high-input, high-yield cropping systems are serious ecological and economic problems in China. To examine the effects of long-term ENF on soil diazotrophs in relation to maize growth, we performed a 5-year field trial whereby 0–300 kg N ha−1 were added to black soil under a maize monocropping system

Anaerobic digestion (AD) is used to produce biogas and can offer a solution in waste management. Digestate, the AD by-product, can be applied to soil to improve fertility. However, the response of soil biological communities is not fully understood. There are mixed reports on its impact on earthworm survival. This study aimed to investigate digestate effects on earthworm mortality, and to elucidate

HYDRUS‐1D has been extensively applied to the simulation of wettable soil infiltration, but very few researches have explored its applicability to the infiltration of water repellent soil (WRS) at different depths. For this end, HYDRUS‐1D was used to simulate water movement of layered soil with a surface repellent thickness of 10 cm. The parameters of the van Genuchten model were calibrated and validated

Return of crop straw and its biochar to the agricultural field decreases pressure on phosphorus (P) resources and reduces leaching and P runoff. We conducted a 5‐year field trial from 2013 to 2017 to study the capability of maize straw and its biochar to retain soil P, which was quantified by investigating the distribution of P fractions in the soil profile (0–100 cm) and soil aggregates of different

The Colorado River has significantly diminished its drainage area and annual discharge. Today it flows across several provinces of Argentina (Neuquén, Mendoza, La Pampa, Río Negro and Buenos Aires) although during the Upper Pleistocene this watershed area was more extended. Its discharge also diminished significantly during documented times although floods occurred episodically during anomalous ENSO

In this paper, a new approach for mapping polygenic depressions colonised by vegetation is presented. These spatially periodic vegetation patterns situated in the arid areas of North Africa are known locally as "Dayas". The mapping of these structures is an important component in monitoring their evolution which can be regarded as an indicator of socio-environmental conditions. For this purpose, a

Knowledge of species diversity is essential for ecological research and conservation planning, especially in overlooked ecosystems, such as the Sechura desert (SD) and the Tumbesian dry forest (DF) of Peru and Ecuador. Little is known about mammal richness in these Threatened ecosystems and thus, we quantified the richness of medium to large-sized mammals within and outside of protected areas. We used

Detailed knowledge on the past events of erosion and redeposition is necessary to assess the frequency and magnitude of soil degradation and to provide more complete data, among all, to calculate rainfall thresholds and to develop strategies for controlling erosion. Therefore, in this study, we aimed to obtain a more comprehensive and accurate reconstruction of erosion–sedimentation events in a gully

Typhoon Hagibis struck Japan on October 12–13, 2019. There was substantial damage over a wide area including the Tohoku region. In particular, Marumori Town, an urban area in Miyagi Prefecture that includes a town hall, was flooded due to heavy rain. The maximum cumulative rainfall and hourly rainfall measured in the town were over 600 and 70 mm, respectively. Heavy rain caused river flooding and landslides

For the accurate design of geotechnical structures subjected to static and dynamic loadings, precise estimation of elastic wave velocities and hence, small strain stiffness of soil is essential. However, the interpretation of elastic wave velocities propagating in deformed/sheared soil has not been comprehensively explored. In this research, shear (Vs) and compression wave velocity (Vp) measurements

It is widely acknowledged that residual and sedimentary soils differ considerably because of how they formed. However, despite extensive advances regarding sedimentary soil, little is known about the small-strain stiffness of residual soil. This paper concerns granite residual soil from Xiamen in China, for which a typical profile is established by in situ investigations. How the stiffness varies with

Depressurization is an effective method to produce methane gas from methane hydrate reservoirs. However, during gas production, sediments consolidate due to increasing effective stress. Revealing the compressive characteristics of methane hydrate-bearing sands during consolidation is essential for an accurate understanding of sediment properties and for the development of a constitutive model. Therefore

ABSTRACT The soil cation exchange capacity (CEC), which is contributed by constant and variable charges, is a vital indicator of soil fertility and affects elemental cycling. Climate is expected to affect soil CEC by controlling soil secondary minerals and organic matter distributions. The objective of this study was to clarify the effects of climate on the charge characteristics of the soil in Mt

The soil water retention curve (SWRC) describes how much water can be retained and is available for plants in soil under different matric potentials. SWRC plays an essential role in the modeling of soil hydraulic processes and can be estimated with pedotransfer functions (PTFs). Splintex 2.0 is a PTF model developed with a user-friendly computer interface that can estimate soil hydraulic functions'

ABSTRACT The present study investigated the effect of arbuscular mycorrhizal fungus (AMF) Rhizophagus intraradices on plant growth and phosphorus (P) uptake of soybean (Glycine max L.) in soils contaminated with different concentrations of heavy metals [copper (100 and 300 mg kg−1), lead (100 and 300 mg kg−1) and zinc (300 and 600 mg kg−1)] and combination (Cu100 + Pb100 + Zn300) in a pot experiment

Abstract Socioeconomic reforms in agrarian sector together with climate changes induce spatial changes in the anthropogenic factors of agricultural soil erosion and soil erosion patterns in the Asian part of Russia. Comparison of pre- and post-reform quantitative parameters of erosion rate and soil loss from arable slopes was performed using logical-mathematical erosion models for different administrative

Abstract— The distribution, mineralization, and transformation of soil organic phosphorus (P) exhibits strong regional characteristics because of variations in climate and pear varieties in Yanbian apple–pear orchard. Soil samples were collected in 11, 25, 40, and 63-year-old apple-pear orchards, at the depths of 0–20 cm, 20–40 cm, and 40–60 cm. Soil aggregates were sieved using the dry sieving method

Abstract— A new method of digital mapping of the soil cover pattern with calculation of the share of soils of different taxa and degree classes for soil erosion in the soil associations is proposed. A comparative analysis of soil maps obtained using different methods of construction (visual expert and digital) and with their different contents (displaying the dominant soil or soil associations) has

Abstract The spatiotemporal variability of CO2 emission from soils of Kursk under different land uses, pollution levels, and soil geneses has been assessed. Data on the seasonal dynamics of CO2 emissions in background (forested recreational areas) and urban soils under the anthropogenic impact are presented. Seasonal dynamics of soil СО2 emission depends on a number of factors: season, type of soil

Abstract The bark of coniferous trees (BCT) is an essential component of the litter in boreal forests. The effects of temperature and mineral additives (N and P) on the rate of BCT decomposition (DecR), its constant (k), total loss of C–CO2, and the changes in BCT chemical composition are assessed in a long-term (12 months) laboratory experiment with soil–bark substrates (SBSs) using three contrasting

Abstract— Soil microbes exert a critical effect on the sustainability of urban lakeside wetland ecosystem. Yet, the magnitude and direction to which ecological restoration affects the soil microbial composition and function remain unclear. Thus, this study was carried out to investigate the structural and functional alterations of soil bacterial community under different restoration patterns, including

Abstract The paper discusses the data obtained in 2015–2018 by the State agrochemical monitoring of soils in Belgorod oblast. The research revealed that organic fertilizers are the main source of microelements entering phytocenoses. They are responsible for 79.2% manganese, 87.3% zinc and 84.2% copper of their total amount introduced with fertilizers and ameliorants. The Ap horizon of the ordinary

Abstract Lanthanides as a separate group of metals geochemically belong to rare earth elements (REEs). For a long time, they have not received proper attention of researchers, whose interest was focused on other harmful environmental pollutants. However, the importance of REEs for modern technologies along with significant gaps in the knowledge about their effects on living organisms has changed the

Abstract The influence of long-term application of organic and mineral fertilizers on the changes of soddy-podzolic soil (Glossic Retisol (Loamic, Aric)) properties was studied. These were: organic carbon content, available nitrogen and phosphorus, and soil exchange complex. The studies were carried out in one-meter soil layer in a long-lasting stationary experiment established in the Perm region in

Abstract Geochemical features of permafrost-affected (Folic Protic Leptic Cryosols, Histic Protic Leptic Cryosols) and Al-Fe-humus soils (Folic Leptic Entic Podzols, Histic Leptic Entic Podzols) have been studied. These soils are widespread in taiga forests of Khentei, Eastern Sayan, and Khangai mountains. Data on the microelemental composition of parent rocks are given. The dispersion coefficients

Abstract Specific red clayey soils on the eluvium of limestone, which are traditionally associated with Mediterranean terra rossa, have been described in the Cape Martyan Reserve in south Crimea. Though such soils are well studied, there are several open questions related to the genesis of the red-colored soils of Cape Martyan. Many researchers consider them as surface paleosols combining features

Abstract The aim of this study is to present data on the salinity status of soils, sediments, and groundwater on irrigated rice fields of the Karkinit Lowland in Krasnoperekopskii district of Crimea in 2015–2018, 2–5 years after the irrigation stopped. Most of solonetzic microcatenas were transformed into rice paddies and irrigated by flooding during half a century; as a result, the soils were leached

Abstract— A soil map provides information on soil spatial distribution. Such information is essential for effective use of soil resources for crop production, land evaluation, spatial planning, environmental control, and for other similar purposes. In this study, a digital soil map for a semiarid region of Afghanistan was developed. This map contains soil taxonomic information up to the subgroup level

Abstract— Molecular biology techniques have been applied to study the diversity and biomass of metabolically active prokaryotic cells in an oil-contaminated oligotrophic peat soil at different levels of mineral nutrition. The share of metabolically active components in the peat samples is only about 10% of the entire prokaryotic community. The application of mineral fertilizer (N40P50K50) against the

Anaerobic digestion is a possibility for post-hydrothermal liquefaction wastewater (PHWW) treatment because this wastewater is rich in nutrients and organic compounds. However, the PHWW presents many toxic compounds. A strategy for the anaerobic treatment of toxic compounds is using biomass adhered to inert supports forming biofilms, which can offer more resistance to the microorganism and protection

This study presented the efficient removal of tartrazine, a typical biorefractory dye, in a heterogeneous photochemical Fenton-like system adopting Fe0 and oxalate (Ox) (UV/Fe0/Ox). Only 47.4% tartrazine could be removed within 60 min with a UV/Fe0 system. The addition of Ox could significantly enhance the removal of tartrazine to 72.4% within only 20 min with the UV/Fe0/Ox system. The effects of various

Dust migration from bauxite residue causes serious occupational diseases and dramatic pollutions to on-site workers and the surrounding environment. In order to investigate the enhancement of mechanical properties and wind erosion behavior of non-traditional stabilizers in mitigating bauxite residue dust pollution, this paper carried out mechanical tests and wind tunnel simulations to reveal the independent

Hydrothermal carbonization converts organic wastes into potentially soil‐improving solids. The nutrient‐rich process waters generated are prospective fertilisers. Two hydrochars were produced from maize biogas digestate after one or six hours’ carbonization. Nutrient concentrations of the digestate, hydrochars and process waters were determined. A 28‐day incubation, in which digestate, hydrochars or

Soybean (Glycine max L.) is known to contribute to soil nitrogen (N) reserves when grown in rotation with other high‐value crops such as corn (Zea mays L.) and winter wheat (Triticum aestivum L.). However, continuous soybean and “short” soybean rotations (e.g. corn‐soybean, wheat‐soybean) may cause declining soybean yields and degrading soil health over time. In this long‐term field study, we determined

Soil compaction by farm machinery may persist for decades, hampering soil productivity and functioning. Assessing compaction costs and guiding recovery strategies are hindered by paucity of data on soil structure recovery rates. A long‐term Soil Structure Observatory (SSO) was established on a loamy soil in Switzerland to monitor soil structure recovery after prescribed compaction, and to better assess

Abstract. Aggregation affects a wide range of physical and biogeochemical soil properties with positive feedbacks on soil carbon storage. For weathered tropical soils, aluminous clays (kaolinite and gibbsite) and pedogenic Fe (oxyhydr)oxides (goethite and hematite; termed Fe oxides) have been suggested as important building units for aggregates. However, as both secondary aluminosilicates and Fe oxides

ABSTRACT In the present study, we assessed the agronomic value of a formulated plant growth-promoting rhizobacteria (PGPR) consortium combined with a phosphocompost amendment in deficient soil, using three plant models (Phaseolus vulgaris, Zea mays, and Solanum lycopersicum). PGPR consortium contains four strains which have been identified as Pseudomonas sp. DN 13–01, Sphingobacterium suaedae T47,

ABSTRACT This field investigation was conducted to assess the implication of the direct and residual effect of the applied differential level of boron on the dynamics of the soil chemical properties, nutrient status in soil and yield of crops under cauliflower–cowpea-okra cropping sequence in an Inceptisol of North East India. The imposed treatments comprise five levels of boron viz., 0, 0.5, 1.0,

Aims Cover crop species selection for soybean (Glycine max) production under no-tillage (NT) management may affect soil organic C sequestration by altering the quantity and quality of C inputs, thereby affecting cropping system sustainability. If so, the underlying mechanisms for such regulation are still unclear. Methods We assessed changes in soil C and N fractions at 0-0.1 m depth and soil C stock

ABSTRACT Dicyandiamide (DCD) has been extensively used to retard nitrification process and decrease nitrogen (N) losses. However, its efficacy is variable and inconsistent depending upon the environmental conditions. The effects of temperature and moisture on DCD degradation and carbon dioxide (CO2) release from calcareous soil are not well-known. Therefore, an incubation experiment comprising three

Abstract The aim of this study was to investigate the long-term effect of magnesium and iron nanoparticles on solute transport and its parameters, which has not been investigated to date. Different concentrations of two types of nanoparticle metal oxides, MgO and Fe3O4, were mixed with a loamy soil and their effects on solute transport and its parameters after three years were investigated. Nanoparticles

Rehabilitation of mined land intends to support food and biomass production, with open cut mines required to return the land to a safe, stable and productive state in Queensland, Australia. The aim of this investigation was to assess the potential for soil that was previously farmed, then mined and rehabilitated to support pasture for commercial cattle production. The study was focussed on abiotic

Legacy soil data often contains considerable agronomic information that can help revitalize agriculture in countries with poor spatial data infrastructures. The objective of this study was to determine whether existing legacy soil data could be used to quantitatively predict soil properties at a higher resolution than the original legacy soil map using digital soil mapping techniques without conducting

Soil quality monitoring is used to assess the soil's ability to maintain agricultural productivity, ecological, and environmental quality. Very few soil quality monitoring studies have reported on multiple samplings over the long-term. Several regional authorities in New Zealand have monitored soil quality since the late 1990s. In the Wellington region, dairy, mixed cropping, market garden, drystock

The increasing regression of Urmia Lake in the last 30 years has brought about the salinization and sodification of arid soils from the shoreline, which has aggravated land degradation in this area. The objective of this work was to assess the changes in the soils brought about by progressive and fast salinization of the region, and to determine the present- or past character of several textural pedofeatures

Biological nitrification inhibition is a plant‐mediated rhizosphere process where natural nitrification inhibitors can be produced and released by roots to suppress nitrifier activity in soil. Nitrification is one of the critical soil processes in the nitrogen (N) cycle, but unrestricted and rapid nitrification in agricultural systems can result in major losses of N from the plant–soil system (i.e

Logging road development is considered as potentially more damaging to a tropical forest than the felling of the actual trees. However, little work has been conducted to determine how logging road development impacts the soil microbial communities and associated C and N cycle activities in tropical forests. This study was conducted within an upland tropical forest in the Northern Zone of Costa Rica

Soil health changes induced by prairie reconstruction (cultivated fields to tallgrass prairie) were assessed in Central Missouri within sites representing a chronosequence of 0, 2, 3, 4, 6, 9, 10, 11, 12, and 13-yr post-reconstruction. In addition, a nearby remnant native prairie, two long-term reconstructed prairies (~25 and ~57-yr post-reconstruction), and a biofuel prairie 9-yr post-reconstruction

In Colombia, seven decades of armed conflict and a protracted “war on drugs” have created unsustainable social and environmental conditions for scientists and rural communities in their attempt to promote non‐illicit crops and care for forests. In Vital Decomposition: Soil Practitioners + Life Politics, anthropologist Kristina Lyons presents an ethnography of the relationship between humans and soil

As in many other soil science disciplines, in soil physics and hydrology, we have arrived at a point where substantial gains in knowledge depend to a large extent on reaching out to related disciplines. The purpose of this special section on “Transdisciplinary Contributions and Opportunities in Soil Physical Hydrology” is to honor Professor Emeritus Jan W. Hopmans, University of California Davis, CA

Large‐scale cultivation and short‐term rotation of Eucalyptus trees for economic reasons have led to excessive consumption of soil water, raising broader ecological and environmental concerns. Therefore, exploring the balance between water use and plant growth of Eucalyptus trees has become increasingly important but remains understudied. Here we hypothesized that stand age and soil moisture gradient

Farmland evaluation has been a major topic in farmland protection research. Due to the lack of reasonable and scientific evaluation methods for farmland protection, the farmland quality and quantity are at high risk of degradation and destruction in China with rapid industrialization and urbanization. The Land Evaluation and Site Assessment (LESA) system has been successfully applied to protect important

High rainfall variability in drylands complicates comparison in time of productivity (ANPP) and soil fertility, and their changes due to altered management. In order to determine the extent, kinetics and mechanisms of soil and ecosystem recovery achievable in degraded loess plots in Southern Israel, ANPP and soil quality in three fenced plots were analyzed between 2011 and 2017 for experimental confirmation

Determination of air pressure and assessment of air losses in clayey soil are of great importance to implementation of compressed air tunneling. In the present work, a series of air flow tests were performed to provide a more reasonable method based on flow characteristics of snap-off pressure and the dissolution/diffusion. Results showed that, the nonlinear air flow behavior and gas breakthrough were

Kumamoto and Kogoshima prefectures are located in the southern Kyushu district of western Japan. In July 2020, a warm, humid air front triggered the delayed rains of the rainy season, resulting in torrential rains in many parts of Japan, especially in Kyushu. In particular, heavy downpours occurred in the southern Kyushu district on July 4th, causing severe damage to much of the infrastructure. Details

The direct extraction of viable microbes from soil samples is critical for the application of many single-cell related technologies. However, there are many aspects of extraction technologies that can impact the viability and diversity of extractable cells from fresh or stored soil samples. In this study, physical dispersion method, chemical dispersion method, and Nycodenz density gradient medium concentration