秸秆还田对中国农田土壤节肢动物数量及多样性影响的整合分析

Abstract

PDF HTML阅读 XML下载 导出引用 引用提醒 秸秆还田对中国农田土壤节肢动物数量及多样性影响的整合分析 DOI: 10.5846/stxb202111053105 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 江苏省自然科学基金项目（BK20200552）；国家自然科学基金项目（32001181）；江苏省博士后基金项目（2020Z201）；南京农业大学中央高校基本业务费项目（KJQN202113） Impacts of straw returning on the number and diversity of soil arthropods in China: A meta-analysis Author: Affiliation: Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:秸秆还田是提高土壤生物数量和多样性的有效手段，但土壤节肢动物对秸秆还田的响应尚未明确。搜集2005到2020年国内有关秸秆还田对农田土壤节肢动物数量及多样性影响的25篇田间试验文献，分别获得230对土壤节肢动物数量数据和112对土壤节肢动物多样性数据，并采用整合分析方法探究不同气候类型、土层深度、种植制度、秸秆还田量、还田方式及还田时间下秸秆还田对农田土壤节肢动物数量及多样性的影响。结果表明，与不还田相比，秸秆还田总体上显著增加了农田土壤节肢动物的数量，但在亚热带季风气候区或还田时间大于5 a时，秸秆还田对节肢动物数量的增加效应则不显著；此外，秸秆还田对土壤节肢动物数量的促进作用还受到节肢动物体型的影响，秸秆还田显著增加土壤中小型节肢动物的数量，特别是蜱螨目类土壤节肢动物，但是对大型土壤节肢动物的促进作用并不显著。秸秆还田总体上也提高了农田土壤节肢动物的多样性，特别是在温带季风气候、年均温小于5℃、年均降水量小于600 mm、秸秆还田量大于10000 kg/hm2、轮作以及还田时间大于5 a这些条件下，秸秆还田能显著提高土壤节肢动物的多样性。回归分析结果显示随着秸秆还田时间的增加，土壤节肢动物数量的增加率显著降低，而随着秸秆还田量的增加，节肢动物数量的增加率则显著升高；节肢动物多样性的增加率随着年均降水量的增加显著降低，而随着秸秆还田时间和还田量的增加显著升高。以上结果表明，秸秆还田有助于提高农田土壤节肢动物的数量和多样性，但此效应会受到气候因子及农田管理方式的影响。 Abstract:Straw returning is an effective way to enhance the number and diversity of soil organisms, but the responses of soil arthropods to straw returning are still unclear. In this study, we conducted a meta-analysis involving 230 comparisons of soil arthropod number and 112 comparisons of soil arthropod diversity collected from 25 related literatures during 2005-2020. The objectives of this study are to assess the effects of straw returning on the number and diversity of soil arthropods in agroecosystems of China, as well as the variation of these effects under different climates, soil depths, cropping systems, straw returning amounts, straw returning methods and time. The results showed that straw returning significantly increased the number of soil arthropods compared with no straw returning, except the studies conducted at subtropical monsoon climate regions, or the time of straw returning was more than 5 a. In addition, the promotional effect of straw returning on soil arthropod number was also affected by the size of arthropods, with straw returning significantly increasing the number of small and medium-sized soil arthropods, especially acari, rather than large soil arthropods. Straw returning also had a tendency to increase the diversity of soil arthropods, and this effect was significant under the conditions of temperate monsoon climates, mean annual temperature less than 5℃, mean annual precipitation less than 600 mm, rotation cropping, amount of straw returning more than 10000 kg/hm2 and straw returning time more than 5 a. The regression analysis showed that the increased rate of soil arthropod number under straw returning significantly decreased with straw returning time, but it significantly increased with straw returning amount; the increased rate of soil arthropod diversity under straw returning decreased significantly with mean annual precipitation, but it significantly increased with straw returning amount and time. Together, these results indicated that straw returning could improve the number and diversity of soil arthropods, which could be affected by climate factors and agricultural managements. 参考文献 相似文献 引证文献