干旱区生态环境知识资源中心(Arid): 中国石生针茅草原的分布、群落特征和分类

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	中国石生针茅草原的分布、群落特征和分类
其他题名	Distribution, community characteristics and classification of Stipa tianschanica var. klemenzii steppe in China
	乔鲜果 1; 郭柯 1; 赵利清 2; 刘长成 1; 赵海卫 1; 侯东杰 1; 高趁光 1
来源期刊	植物生态学报
ISSN	1005-264X
出版年	2017
卷号	41 期号:2 页码:231-237
中文摘要	石生针茅(Stipa tianschanica var. klemenzii)草原是中国荒漠草原最具代表性的植被类型。该文利用2010-2016年生长季的野外调查数据并结合已有文献资料,对中国石生针茅草原的生态地理分布、群落学特征以及类型划分进行了全面系统的分析。结果表明:中国石生针茅草原主要分布在内蒙古锡林郭勒高原西部和乌兰察布高原,常分布在棕钙土基质的高平原上;分布区气候干旱,群落高度、盖度、生物量和物种丰富度较低;根据80个样地的数据统计,石生针茅草原共记录到种子植物165种,隶属于29科85属,其中以偶见种(存在度<20%)居多,占87%,常见种和恒有种较少,存在度大于50%的物种有石生针茅、银灰旋花(Convolvulus ammannii)、无芒隐子草(Cleistogenes songorica)、细叶韭(Allium tenuissimum);物种生活型以地面芽植物和一年生植物居多,分别占55%和20%;水分生态类型以典型旱生植物居多,占47%,其次为强旱生植物和中旱生植物;区系地理成分以亚洲中部和东古北极成分为多,分别占37%和26%;根据生活型和物种的优势度,石生针茅群系可划分为6个群丛组、29个群丛。
英文摘要	Stipa tianschanica var. klemenzii steppe is the most typical formation of desert steppe in China. Based on the primary plots data obtained from fieldworks during the growing seasons from 2010 to 2016 as well as some earlier records, we studied the Stipa tianschanica var. klemenzii steppe across China systematically, including the eco-geographical distributions, community characteristics and classifications. The results showed that S. tianschanica var. klemenzii steppe distributed mainly on the Ulan Qab Plateau and western Xilin Gol Plateau. Due to the arid biotope of S. tianschanica var. klemenzii steppe, quantitative characteristics of the assemblage including height, coverage, biomass and species richness were normally lower than that of most Stipa formations in Eurasian steppe region. Moreover, 165 seed plants belonging to 85 genera and 29 families were recorded in the 80 study sites, in which rare species (occurrence frequency <20%) made up 87% of the total plants while common species and constant species could only be found occasionally. Species with the occurrence frequency exceeding 50% included S. tianschanica var. klemenzii, Convolvulus ammannii, Cleistogenes songorica, Allium tenuissimum. In addition, Hemicryptophyte and therophyte were the two dominant life forms, covering 55% and 20% of the species, respectively. As for the ecological type of water, typical xerophytes accounted for 47% of all species which is followed by super-xerophytes and meso-xerophytes. Middle Asian areal-type and east Palaeo-North areal-type were the two major floristic elements, containing 37% and 26% of the species, respectively. Based on the life forms and dominances of the species within the community, S. tianschanica var. klemenzii steppe in China could be classified into 6 association groups, 29 associations.
中文关键词	丛生禾草草原 ; 生活型谱 ; 区系地理成分 ; 群落分类
英文关键词	bunch grass steppe life-form spectrum floristic geographic elements community classification
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:5951234
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/2XILL650/236953
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.内蒙古大学生命科学学院, 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. 中国石生针茅草原的分布、群落特征和分类[J]. 中国科学院植物研究所,2017,41(2):231-237.
APA	乔鲜果.,郭柯.,赵利清.,刘长成.,赵海卫.,...&高趁光.(2017).中国石生针茅草原的分布、群落特征和分类.植物生态学报,41(2),231-237.
MLA	乔鲜果,et al."中国石生针茅草原的分布、群落特征和分类".植物生态学报 41.2(2017):231-237.