干旱区生态环境知识资源中心(Arid): 呼伦贝尔草地风蚀沙化土壤动物对环境退化的响应

Arid

	呼伦贝尔草地风蚀沙化土壤动物对环境退化的响应
其他题名	Responses of soil fauna to environment degeneration in the process of wind erosion desertification of Hulunbeir steppe
	吕世海 1; 卢欣石 2; 高吉喜 1
ISSN	1001-9332
出版年	2007
卷号	18 期号:9 页码:2055-2060
中文摘要	为揭示草地沙化过程中土壤动物与土壤环境要素的相互关系,采用野外调查和实验室检测相结合的方法,对呼伦贝尔沙化草地不同沙化阶段土壤有机质、水解氮、速效磷、土壤水分含量、pH值,以及土壤动物群落结构、种群密度、多样性等进行了比较研究.共获得土壤动物4门6纲12目,优势类群中小型土壤动物仅线虫目1类,占总捕获量的94.3%;大型土壤动物为鞘翅目和半翅目2类,占总捕获量的79.7%.随草地沙化程度的不断加剧,土壤动物类群数量、种群密度、多样性和均匀性均呈明显递减趋势,严重沙化草地土壤中的土壤动物完全消失.回归分析表明,呼伦贝尔不同沙化阶段草地0～20 cm土层土壤动物密度与土壤养分含量、土壤含水量、pH值及地表枯落物量呈显著线性相关,说明土壤动物群落对沙化草地土壤环境的改变较敏感.
英文摘要	To reveal the relationships between soil fauna and soil environmental factors in the process of steppe desertification,field survey combined with laboratory analysis was made to study the community structure,population density and biodiversity of soil fauna,and their relationships with the changes of soil organic matter,hydrolysable nitrogen,available phosphorus and moisture contents and soil pH at different stages of desertification of Hulunbeir steppe.The soil faunal specimens collected belonged to 4 phyla,6 classes and 12 orders.Nematoda was the only dominant group of medium-and small-sized soil fauna,occupying 94.3% of the total,while Coleoptera and Hemiptera were the dominant groups of large-sized soil fauna,with the amount of 79.7%.The group amount,population density,diversity,and evenness of soil fauna had an obvious decreasing trend with the aggravation of steppe desertification.At serious stage of desertification,soil fauna vanished completely.The population density of soil fauna in 0-20 cm soil layer had significant linear correlations with soil nutrients and moisture contents,soil pH,and litter mass,indicating that soil fauna had stronger sensibility to the changes of soil environmental factors in the process of wind erosion desertification of Hulunbeir steppe.
中文关键词	呼伦贝尔 ; 草地沙化 ; 土壤环境退化 ; 土壤动物 ; 响应
英文关键词	Hulunbeir steppe desertification soil environment degeneration soil fauna response
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:2907488
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221692
作者单位	1.中国环境科学研究院, 北京 100012, 中国; 2.北京林业大学资源与环境学院, 北京 100083, 中国
推荐引用方式 GB/T 7714	吕世海,卢欣石,高吉喜. 呼伦贝尔草地风蚀沙化土壤动物对环境退化的响应[J]. 北京林业大学,2007,18(9):2055-2060.
APA	吕世海,卢欣石,&高吉喜.(2007).呼伦贝尔草地风蚀沙化土壤动物对环境退化的响应.,18(9),2055-2060.
MLA	吕世海,et al."呼伦贝尔草地风蚀沙化土壤动物对环境退化的响应".18.9(2007):2055-2060.