干旱区生态环境知识资源中心(Arid): 青藏高原羽柱针茅草原的分布、群落特征和分类

Arid

	青藏高原羽柱针茅草原的分布、群落特征和分类
其他题名	Distribution, community characteristics and classification of Stipa basiplumosa steppe on Tibetan Plateau
	乔鲜果 1; 郭柯 1; 赵利清 2; 杨瑶 1; 赵海卫 1
来源期刊	地理研究
ISSN	1000-0585
出版年	2017
卷号	36 期号:12 页码:2432-2440
中文摘要	羽柱针茅(Stipa basiplumosa)草原是青藏高原特有的群落类型,在羌塘高原中、北部有较为广泛的分布。利用2012-2015年的植被调查数据及已有的文献资料,对羽柱针茅草原的生态地理分布、群落特征和分类做了全面分析。结果表明:羽柱针茅草原分布在阿里地区、那曲地区和日喀则地区,占据海拔4350~5200 m的湖盆外缘和洪积扇中部,分布区干旱、寒冷。群落低矮、物种贫乏、植物稀疏、生物量低。物种组成简单,以菊科、禾本科、豆科、莎草科等为主;生活型以地面芽植物和一年生植物居多;水分生态类型以旱生成分占绝对优势;区系地理成分以青藏高原成分和中亚亚洲中部成分为多。羽柱针茅草原群系可划分为7个群丛组、20个群丛。
英文摘要	Stipa basiplumosa steppe is an endemic vegetation formation that occurs restrictedly on Tibetan Plateau. Based on primary plots data obtained from fieldworks during 2012-2015 as well as some earlier documents, we studied the eco- geographic distribution, community characteristics and classification of the Stipa basiplumosa steppe. The results showed that: Stipa basiplumosa formation was distributeds mainly on the outskirts of lake basin and the central section of proluvial fan of Ngari, Nakchu and Shigatse prefectures. It is cold and arid in the distribution area. Quantitative values such as average height, coverage, aboveground biomass and species richness of the formation are lower than those of most of the other steppes. Species composition is simple, and families like Compositae, Poaceae, Leguminosae, Cyperaceae play important roles. In addition, hemicryptophytes and therophytes are in the ascendant among the species life forms. The ecological type of water is simply divided into xerophytes and mesophytes, accounting for 71% and 29%, respectively. Eight floristic geographic elements are involved; Qinghai- Tibet Plateau and central Asia- middle Asia elements are the two major floristic ones. Based on classification and nomenclature system of Chinese vegetation, Stipa basiplumosa formation is classified into 7 association groups, consisting of 20 associations.
中文关键词	丛生禾草草原 ; 物种组成 ; 生活型 ; 区系地理 ; 群落分类
英文关键词	bunchgrass steppe species composition life form floristic geographical elements community classification
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:6139328
来源机构	中国科学院植物研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235772
作者单位	1.中国科学院植物研究所, 植被与环境变化国家重点实验室, 北京 100093, 中国; 2.内蒙古大学生态与环境学院, 呼和浩特, 内蒙古 010021, 中国
推荐引用方式 GB/T 7714	乔鲜果,郭柯,赵利清,等. 青藏高原羽柱针茅草原的分布、群落特征和分类[J]. 中国科学院植物研究所,2017,36(12):2432-2440.
APA	乔鲜果,郭柯,赵利清,杨瑶,&赵海卫.(2017).青藏高原羽柱针茅草原的分布、群落特征和分类.地理研究,36(12),2432-2440.
MLA	乔鲜果,et al."青藏高原羽柱针茅草原的分布、群落特征和分类".地理研究 36.12(2017):2432-2440.