摘要
在荒漠生态系统中,以人工灌丛进行植被恢复与重建是土地荒漠化防治最有效、最经济、最持久、最稳定的措施之一。土壤动物是荒漠生态系统土壤生物的重要组分,在物质循环、养分流动和信息传递中扮演着重要角色。荒漠灌丛和土壤动物互相作用能够促进灌丛“肥岛”演变,有利于灌丛生态功能发展和退化生态系统有效恢复。降水变化条件下,基于“荒漠灌丛和土壤动物关系”这一核心问题,在总结荒漠灌丛分布特征、荒漠灌丛和土壤动物分布关系的基础上,分析了荒漠灌丛土壤动物分布对降水变化的响应规律及内在机制。在未来全球变化条件下,从荒漠灌丛土壤动物对地上的反馈效应、研究方法与先进技术应用及荒漠灌丛土壤动物多样性与生态系统服务功能方面,探索了荒漠生态系统中荒漠灌丛土壤动物研究中应重点关注的几个科学问题,为荒漠生态系统生物多样性保护、植被建设及响应气候变化管理提供了科学依据。
In a desert ecosystem,shrub regeneration was facilitated as part of a vegetation restoration program.Shrub regeneration was found to be one of the most efficient, economical, lasting and stable measures for desertification control in these regions. The soil fauna is an important component of soil biota in desert ecosystems,and play important roles in material recycling,energy flow and information transfer. Shrub establishment had beneficial effects on soil faunal distribution and shrubs also acted as “fertilizer islands” in the restoration of degraded ecosystems. Our study focused on the relationships between soil faunal distributions and shrub microhabitats.Firstly, we catalogued the distribution of desert shrubs and their effects on the distribution of soil faunal communities. Secondly,we probed into the underlying mechanisms of the effects of shrubs on soil faunal distribution and how these processes responded to precipitation changes in these regions. From these data we extrapolated responses under future global climate change and proposed some key topics for future study. They are:1) The feedback of soil faunal distribution in particular shrub microhabitats on aboveground plant growth and development and related ecophysiological attributes;2)Identification of new methods to examine the relationships between soil fauna and desert shrubs under precipitation changes;3) The ecosystem service benefits of particular soil faunal diversity distribution patterns between shrub microhabitats in arid regions.
作者
郭志霞
刘任涛
赵文智
GUO Zhi-xia;LIU Ren-tao;ZHAO Wen-zhi(School of Agriculture,Ningxia University,Yinchuan 750021,China;School of Ecology and Environments,Ningxia University,Yinchuan 750021,China;Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwestern China,Ningxia University,Yinchuan 750021,China;Northwest Institute of Ecological Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China)
出处
《草业学报》
CSCD
北大核心
2022年第10期206-216,共11页
Acta Prataculturae Sinica
基金
宁夏自然科学基金(2020AAC0214,2021AAC03047)
宁夏重点研发计划项目(2021BEG03007)
国家自然科学基金(41867005)资助。
关键词
荒漠灌丛
多样性保护
土壤动物
降水变化
desert shrub
biodiversity conservation
soil fauna
precipitation changes
