干旱区生态环境知识资源中心(Arid): 宁夏盐池人工封育荒漠化草原植物生态位研究

Arid

	宁夏盐池人工封育荒漠化草原植物生态位研究
其他题名	The plants niches of enclosed desertificated grassland in Yanchi of Ningxia
	刘建; 张克斌; 程中秋; 孟力猛
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2012
卷号	26 期号:1 页码:184-188
中文摘要	运用Levins生态位宽度指数及Pianka生态位重叠指数,对宁夏盐池人工封育荒漠化草原2008和2009年植物生态位宽度及生态位重叠进行计量,以了解干旱半干旱区草原植物生态位格局。结果表明:黑沙蒿生态位宽度在2008、2009两年中均最大,分别为0.543、0.497,是人工封育区的优势种。此外,两年间封育区其他优势种也相同,分别为:苦豆子、丝叶山苦荬、刺沙蓬、阿尔泰狗娃花。2008和2009年的生态位重叠计测结果均表明,生态位宽度大的物种不一定和其他物种有大的重叠指数,即使是生态位宽度较大的物种之间的重叠指数也不高,可见较高的生态位宽度和较高的生态位重叠度之间并不存在直接的线性关系;2008、2009年较高的Pianka生态位重叠指数都出现在生态位宽度较小的物种之间,这一现象从另外一个角度说明植被恢复过程中环境资源存在着高度的空间异质性。
英文摘要	In order to understand the pattern of plants niches in arid and semi-arid grassland in 2008 and 2009,the niche breadth and niche overlap were measured using Levins index and Pianka index in enclosed area of Yanchi county,Ningxia Hui Nationality Autonomous Region.The results showed that the niche breadth of Artemisia ordosica Krasch.were both the biggest in the two years of 08 and 09,which were 0.543 and 0.497.Its the dominant species in the enclosed area.Besides,other dominant species in the two years were same.They were Sophora alopecuroides Linn.,Ixeris chinensis(Thunb.) Nakai.,Salsola ruthenica IIjin.and Heteropappus altaicus(Willd.) Novopokr..The results of niche overlap showed that the species having big niche breadth didnt have big niche overlap with other species,even the niche overlap between the species which had big niche breadth were not big,so the niche breadth didnt have directly linear relation with niche overlap.The relatively bigger niche overlap in 08 and 09 appeared between the species with low niche breadth,which showed another viewpoint that environment and resources had high spatial heterogeneity during the process of vegetation restoration.
中文关键词	封育区 ; 荒漠化草原 ; 生态位宽度 ; 生态位重叠 ; 盐池
英文关键词	enclosed area grassland of desertification niche breadth niche overlap Yanchi
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:4436832
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/2XILL650/228079
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	刘建,张克斌,程中秋,等. 宁夏盐池人工封育荒漠化草原植物生态位研究[J]. 北京林业大学,2012,26(1):184-188.
APA	刘建,张克斌,程中秋,&孟力猛.(2012).宁夏盐池人工封育荒漠化草原植物生态位研究.干旱区资源与环境,26(1),184-188.
MLA	刘建,et al."宁夏盐池人工封育荒漠化草原植物生态位研究".干旱区资源与环境 26.1(2012):184-188.