干旱区生态环境知识资源中心(Arid): 沙漠化对科尔沁沙质草地大型土壤动物群落的影响及其成因分析

Arid

	沙漠化对科尔沁沙质草地大型土壤动物群落的影响及其成因分析
其他题名	Properties and mechanisms of change of soil macro fauna communities in the desertification process of Horqin sandy grassland
	赵哈林1 ; 刘任涛 2; 周瑞莲 3; 曲浩 1; 潘成臣 1; 王燕 1; 李瑾 1
来源期刊	草业学报
ISSN	1004-5759
出版年	2013
卷号	22 期号:3 页码:70-77
中文摘要	为了解沙漠化对沙质草地土壤大型动物群落的影响,2008和2009年在科尔沁沙地研究了沙质草地沙漠化过程中土壤动物类群丰富度、多样性和个体密度的变化及其机制。结果表明,随着草地沙漠化的发展,土壤大型动物类群丰富度、Shannon-Wiener多样性指数和个体密度明显下降,均匀度和优势度趋于增加,其中轻度和严重沙漠化阶段变化幅度最大;土壤动物群落组成不断变化,相似性降低,群落由多优势类群向单一优势类群,甚至无明显优势类群转化,致使群落发生逆行演替;沙漠化对草地土壤植食性动物影响相对较大,对杂食性和捕食性动物影响相对较小,导致群落功能群结构明显改变;草地沙漠化过程中,土壤动物群落的变化主要源于植被退化和土壤环境的恶化,特别是植被盖度和凋落物产量的下降以及土壤质地、有机质和养分状况的恶化,土壤温度、水分和pH的影响未达到显著水平。
英文摘要	Group richness, diversity and individual density of soil macro-fauna communities were studied from 2008-2009 in Horqin sandy grassland to understand the effect of grassland desertification on the soil macro-fauna community. With the development of grassland desertification, the richness, diversity and individual density was significantly reduced, and the evenness and dominance index significantly increased, with the maximum change observed at the light and at the severe desertification stages. Community composition changed constantly, the similarity between communities was reduced, and the community changed from many dominant groups to a single dominate group, or even to no dominant group, resulting in community succession. Grassland desertification had relatively large effects on soil phytophagous animals and relatively weak effects on soil omnivorous and predatory animals, resulting in significant changes of nutrient functional structure in the community. In the grassland desertification process, the changes of soil macro-fauna community resulted mainly from the degradation of vegetation and the deterioration of soil environment, especially the reductions in vegetation coverage and litter, as well as the deterioration of soil texture and nutrition. The effects of soil moisture, temperature and pH on soil macro-fauna communities were relatively weak.
中文关键词	科尔沁沙地 ; 草地沙漠化 ; 大型土壤动物 ; 群落变化 ; 机制
英文关键词	Horqin sandy land grassland desertification soil macro fauna community changes mechanism
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:4852818
来源机构	中国科学院西北生态环境资源研究院 ; 宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229295
作者单位	1.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 2.宁夏大学, 银川, 宁夏 750021, 中国; 3.鲁东大学, 烟台, 山东 264025, 中国
推荐引用方式 GB/T 7714	赵哈林,刘任涛,周瑞莲,等. 沙漠化对科尔沁沙质草地大型土壤动物群落的影响及其成因分析[J]. 中国科学院西北生态环境资源研究院, 宁夏大学,2013,22(3):70-77.
APA	赵哈林.,刘任涛.,周瑞莲.,曲浩.,潘成臣.,...&李瑾.(2013).沙漠化对科尔沁沙质草地大型土壤动物群落的影响及其成因分析.草业学报,22(3),70-77.
MLA	赵哈林,et al."沙漠化对科尔沁沙质草地大型土壤动物群落的影响及其成因分析".草业学报 22.3(2013):70-77.