干旱区生态环境知识资源中心(Arid): 半干旱区湿地植被群落结构与交错带的变化分析

Arid

	半干旱区湿地植被群落结构与交错带的变化分析
其他题名	Structure and Ecotone Variations of Wetland Vegetation Communities in Semi-arid Region
	王晓; 张克斌; 程中秋; 苏鹏飞; 庞吉林
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2012
卷号	32 期号:2 页码:100-104
中文摘要	以宁夏回族自治区盐池县四儿滩湿地为例,通过20052010年79月份的野外调查,以重要值为基础数据,采用丰富度指数﹑物种多样性指数﹑生态优势度指数对四儿滩湿地植被群落结构年际间的变化以及湿地湿生带、交错带、旱生带这3带之间植被群落结构的差异进行了对比分析,并研究了湿地干草原交错带边缘效应。结果表明:(1)四儿滩湿地植被生长状态在20052007年呈现增长趋势,20082010年长势衰减,湿地出现退化情况。其中,2007年植被长势最好,2010年植被长势最差。(2)在湿地与干草原交错带中,出现明显的边缘效应。生态优势度(SP)、丰富度(R)和物种多样性(SW)均是交错带最大,其次是旱生带,湿生带最小。(3)铁路建设对湿地边缘靠近铁路的旱生带影响最大,而上游人工湖的建设对湿生带影响最大。(4)在四儿滩湿地,交错带的植被变化情况与降雨量密切相关。
英文摘要	The edge effects of plant communities were investigated in a wetland-dry grassland ecosystem of Siertan wetland in Yanchi County,Ningxia Hui Autonomous Region.Based on the importance values,the indices of abundance,diversity and ecological dominance were calculated to analyze the changes and the major environmental factors of plant community structure among three strips and three lines in the ecosystem.The calculated indices show that the vegetations of the investigated area were growing well during the years from 2005 to 2007.However,the exuberant growth had been retarded from 2008 to 2010.Among these five years,the vegetation in 2007 exhibited the best growing condition,while that in 2010 showed the worst.The edge effect was amplified apparently in the community ecotone of wetland and arid grassland,where had the highest ecological dominance(SP),richness indices(R) and diversity(SW) indices.The dry zone was the most disturbed area by the railway construction.Observations indicated that the changes of vegetation growth in the ecotone were highly related to the amount and frequency of the precipitation.
中文关键词	湿地 ; 群落结构 ; 交错带 ; 环境因子 ; 边缘效应
英文关键词	wetland community structure ecotone environmental factors 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:4526809
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/2XILL650/228556
作者单位	北京林业大学, 水土保持和荒漠化防治教育部重点实验室, 北京 100083, 中国
推荐引用方式 GB/T 7714	王晓,张克斌,程中秋,等. 半干旱区湿地植被群落结构与交错带的变化分析[J]. 北京林业大学,2012,32(2):100-104.
APA	王晓,张克斌,程中秋,苏鹏飞,&庞吉林.(2012).半干旱区湿地植被群落结构与交错带的变化分析.水土保持通报,32(2),100-104.
MLA	王晓,et al."半干旱区湿地植被群落结构与交错带的变化分析".水土保持通报 32.2(2012):100-104.