干旱区生态环境知识资源中心(Arid): 半干旱区湿地-干草原群落交错带边缘效应研究

Arid

	半干旱区湿地-干草原群落交错带边缘效应研究
其他题名	Edge Effect of Wetland and Arid Grassland Community Ecotone in Semi-arid of China
	张克斌; 刘云芳; 李瑞
ISSN	1000-4025
出版年	2007
卷号	27 期号:5 页码:989-994
中文摘要	以宁夏盐池四儿滩湿地为例,于2005年和2006年7-8月份沿湿地干草原生境梯度按东、东北、西、西北4条样线进行实地植被调查,并采用TWINSPAN数量分类和植物群落结构指数计量研究湿地干草原交错带边缘效应。结果表明：（1）四儿滩湿地生态系统植物群落分为沼泽植被、草甸植被、干草原植被3个类型。（2）四儿滩湿地植物群落结构指数除群落均匀度指数外,生态优势度、丰富度和物种多样性均是交错带最大,其次是旱生带,湿生带最小。（3）四儿滩湿地干草原交错带不同方向群落结构差异较大,各项植物群落结构指数均是东北样线最大,西北样线最小。造成不同样线间边缘效应差异的主要因素是人为干扰程度和地形抬升程度不同。
英文摘要	The edge effect of plant communities was investigated in a wetlanddry grassland ecosystem at Siertan wetland in Yanchi county,Ningxia.Four transects lines each about 1 km long were set up in July 2005 along the biotope gradient in four directions:east,northeast,west and northwest for vegetation survey.The data were analyzed using TWINSPAN.The vegetation in Siertan wetland was classified into 3 vegetation types:halophytic marsh vegetation,meadow vegetation and grassland vegetation.Base on the calculation of the community structure indices,the edge effect was studied and revealed distinct differences among those three vegetation zones along each transect line.The ecotone had the highest richness indices(R),diversity indices(SW) and ecological dominance(SP) except evenness indices(E).As for the four transect lines,the northeast ecotone scored higher in each community structure indices than the others did,and the northwest was less.The edge effect difference between different transect lines were because of the human disturbance and topography uplift.
中文关键词	湿地 ; 干草原 ; 交错带 ; 边缘效应
英文关键词	Wetland semi-arid ecotone edge effect
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:2949538
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/2XILL650/221600
作者单位	北京林业大学水土保持学院, 北京 100083, 中国
推荐引用方式 GB/T 7714	张克斌,刘云芳,李瑞. 半干旱区湿地-干草原群落交错带边缘效应研究[J]. 北京林业大学,2007,27(5):989-994.
APA	张克斌,刘云芳,&李瑞.(2007).半干旱区湿地-干草原群落交错带边缘效应研究.,27(5),989-994.
MLA	张克斌,et al."半干旱区湿地-干草原群落交错带边缘效应研究".27.5(2007):989-994.