干旱区生态环境知识资源中心(Arid): 土地覆被变化与管理对土壤动物群落演变的耦合效应

Arid

	土地覆被变化与管理对土壤动物群落演变的耦合效应
其他题名	The Combined Effects of Land-cover Change and Management Practices on Soil Microfauna Communities
	李锋瑞; 刘继亮; 刘长安; 牛瑞雪; 刘七军
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2012
卷号	32 期号:2 页码:340-350
中文摘要	以黑河中游人工绿洲边缘天然草地及其转变的人工梭梭灌木林(21a)、人工杨树林(28a)、人工樟子松林(33a)和农田(开垦27a和100a)为研究对象,基于6种研究样地中小型土壤动物群落的调查数据,采用多变量排序和通径分析等方法,研究了土地利用/覆被变化与管理措施对中小型土壤动物群落及其主要类群演变的耦合效应。主要结果是:①将天然草地转变为未实施管理措施的人工梭梭灌木林后并未引起土壤动物群落组成、数量和物种多样性的显著变化,而转变为实施管理措施的杨树和樟子松人工林及农田后,导致了土壤动物群落组成、数量和物种多样性的变异,证实了土地覆被变化对中小型土壤动物群落的作用及其效应受管理措施的强烈调控。②土壤动物群落的演变过程受土地覆被变化与灌溉和施肥管理的共同影响,其中灌溉的贡献率最大,是关键驱动因子。③不同土壤动物类群对土地覆被变化和管理耦合作用的响应不同。灌溉对跳虫、甲螨和革螨的个体数量和物种丰富度的直接影响和总效应最大;施肥对辐螨的个体数量和物种丰富度的直接影响和总效应最大;灌溉和施肥对稀有类群的个体数量和物种丰富度的直接影响和总效应均较大,具同等重要的作用。结论是,土地覆被变化与管理耦合作用通过改变土壤水文和生态环境条件驱动了中小型土壤动物群落的演变过程。
英文摘要	In this study,we investigated soil microfauna communities across six major land-use/cover types of natural grassland and 5 differently managed artificial systems(21-year-old planted shrubland,28-year-old Poplar and 33-year-old Pinus plantations,and 27-and 100-year-old croplands) converted from natural grassland in an arid region of northwest China.The data were used to quantify the combined effects of land-cover change and management disturbances on the dynamics of soil microfauna communities.The conversion of natural grassland to unmanaged planted shrubland did not cause a significant change in the structure of the microfauna community,while the conversion of natural shrubland to managed Poplar and Pinus plantations and croplands significantly increased abundance,richness and diversity of the microfauna community.Multivariate and path analyses showed that the assembly of soil microfauna communities was significantly affected by the combination of land-cover change(indicated by vegetation cover),irrigation and fertilization,but the irrigation disturbance was the most important driver.The response of soil microfauna to irrigation,fertilization and vegetation cover varied among different components of the assemblages.Overall,irrigation had the greatest contribution to observed variation in the abundance and species richness of Collembola,Oribatida and Gamasida,while fertilization was more important than irrigation and vegetation cover to variation in the abundance and species richness of Actinetidida,and both irrigation and fertilization contributed to variation in the abundance and species richness of the rare group.Our results suggest that land-cover change and management disturbances interact in shaping soil microfauna community dynamics,but irrigation was identified to be the most important structuring force in soil fauna communities in this arid environment.
中文关键词	黑河流域 ; 土地利用/覆被变化 ; 管理扰动 ; 相对贡献 ; 中小型土壤动物 ; 生物多样性
英文关键词	Heihe river basin land-use/cover change management disturbances relative contribution soil microfauna assemblages biodiversity
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4457264
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228987
作者单位	中国科学院寒区旱区环境与工程研究所临泽内陆河流域研究站, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	李锋瑞,刘继亮,刘长安,等. 土地覆被变化与管理对土壤动物群落演变的耦合效应[J]. 中国科学院西北生态环境资源研究院,2012,32(2):340-350.
APA	李锋瑞,刘继亮,刘长安,牛瑞雪,&刘七军.(2012).土地覆被变化与管理对土壤动物群落演变的耦合效应.中国沙漠,32(2),340-350.
MLA	李锋瑞,et al."土地覆被变化与管理对土壤动物群落演变的耦合效应".中国沙漠 32.2(2012):340-350.