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Reducing tillage intensity benefits the soil micro- and mesofauna in a global meta-analysis
European Journal of Soil Science ( IF 4.2 ) Pub Date : 2022-11-12 , DOI: 10.1111/ejss.13321
Bibiana Betancur-Corredor, Birgit Lang, David J. Russell

Soil fauna drives crucial processes of energy and nutrient cycling in agricultural systems, and influences the quality of crops and pest incidence. Soil tillage is the most influential agricultural manipulation of soil structure, and has a profound influence on soil biology and its provision of ecosystem services. The objective of this study was to quantify through meta-analyses the effects of reducing tillage intensity on density and diversity of soil micro- and mesofaunal communities, and how these effects vary among different pedoclimatic conditions and interact with concurrent management practices. We present the results of a global meta-analysis of available literature data on the effects of different tillage intensities on taxonomic and functional groups of soil micro- and mesofauna. We collected paired observations (conventional vs. reduced forms of tillage/no-tillage) from 133 studies across 33 countries. Our results show that reduced tillage intensity or no-tillage increases the total density of springtails (+35%), mites (+23%), and enchytraeids (+37%) compared to more intense tillage methods. The meta-analyses for different nematode feeding groups, life-forms of springtails, and taxonomic mite groups showed higher densities under reduced forms of tillage compared to conventional tillage on omnivorous nematodes (+53%), epedaphic (+81%) and hemiedaphic (+84%) springtails, oribatid (+43%) and mesostigmatid (+57%) mites. Furthermore, the effects of reduced forms of tillage on soil micro- and mesofauna varied with depth, climate and soil texture, as well as with tillage method, tillage frequency, concurrent fertilisation, and herbicide application. Our findings suggest that reducing tillage intensity can have positive effects on the density of micro- and mesofaunal communities in areas subjected to long-term intensive cultivation practices. Our results will be useful to support decision making on the management of soil faunal communities and will facilitate modelling efforts of soil biology in global agroecosystems.

中文翻译:

在一项全球荟萃分析中,降低耕作强度有利于土壤微型和中型动物

土壤动物驱动着农业系统中能量和养分循环的关键过程,并影响作物质量和害虫发生率。土壤耕作是对土壤结构影响最大的农业操作,对土壤生物学及其生态系统服务的提供有着深远的影响。本研究的目的是通过荟萃分析量化降低耕作强度对土壤微型和中型动物群落密度和多样性的影响,以及这些影响如何在不同的土壤气候条件下变化以及如何与同时进行的管理实践相互作用。我们介绍了关于不同耕作强度对土壤微型和中型动物的分类学和功能群的影响的现有文献数据的全球荟萃分析结果。我们收集了成对的观察结果(传统 vs. 减少耕作/免耕形式)来自 33 个国家的 133 项研究。我们的结果表明,与强度更高的耕作方法相比,降低耕作强度或免耕会增加跳虫 (+35%)、螨虫 (+23%) 和包囊虫 (+37%) 的总密度。对不同线虫摄食组、跳尾虫的生命形式和分类学螨组的荟萃分析显示,与杂食性线虫 (+53%)、足足线虫 (+81%) 和半足线虫的常规耕作相比,减少耕作形式下的密度更高 ( +84%)、弹尾螨 (+43%) 和甲螨 (+57%)。此外,减少耕作形式对土壤微型和中型动物的影响因深度、气候和土壤质地以及耕作方法、耕作频率、同时施肥和除草剂应用而异。我们的研究结果表明,降低耕作强度可以对长期集约化耕作地区的微型和中型动物群落密度产生积极影响。我们的结果将有助于支持土壤动物群落管理的决策,并将促进全球农业生态系统中土壤生物学的建模工作。
更新日期:2022-11-12
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