干旱区生态环境知识资源中心(Arid): 塔里木河下游荒漠植物群落物种多样性及其结构特征分析

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	塔里木河下游荒漠植物群落物种多样性及其结构特征分析
其他题名	Species Diversity and Structural Characters of Desert Plant Communities in Lower Reaches of Tarim River
	白元 1; 徐海量2 ; 张鹏3 ; 赵新风 3; 傅荩仪 1
来源期刊	生态与农村环境学报
ISSN	1673-4831
出版年	2012
卷号	28 期号:5 页码:486-492
中文摘要	以29块植物群落调查样地资料为基础,采用物种多样性指数、丰富度和均匀度由高到低指数对塔里木河下游植物群落的物种多样性及群落结构进行分析。结果表明,研究区共有植物10科14属,出现频率居于前3位的植物依次为柽柳、黑果枸杞和胡杨;重要值以胡杨为最大(0.384),其次为柽柳(0.230),盐生草为最小(0.002);优势建群植物胡杨主要分布在与河道垂直距离500 m范围内。沿河道从英苏至阿拉干断面,地下水位逐渐下降,物种多样性总体呈下降趋势,群落结构由乔木-灌木-草本转为以乔木-灌木为主;随与河道垂直距离增加,群落密度和盖度均呈现先增加后减少的变化趋势,植物群落结构由乔木-灌木、乔木-灌木-草本逐渐演变为灌木-草本或单一的灌木结构。
英文摘要	Based on the data of plant communities collected from 29 sampling sites,species diversities and structures of the natural plant communities in the lower reaches of the Tarim River were analyzed from the angle of different environmental gradients,using species diversity,richness and evenness indices.Results show that(1) the study area had a total of 14 genera of plants,belonging to 10 families,with Tamarix ramosissima,Lycium ruthenicum and Populus euphratica being the first three in frequency of occurrence and P.euphratica being the highest(0.384),T.ramosissima the next highest(0.230) and Halogeton arachnoideus the lowest(0.002) in the importance value,and P.euphratica being dominant species was mainly distributed in areas less than 500 m from the river.(2) Groundwater tables along the river lowered from the upper reaches to the lower reaches,except for the Yiganbujima Section,and so did the species diversity on the whole and arbor-shrub-herb-dominated communities were gradually changed into arbor-shrub-dominated one;while getting farther away from the river,the communities first increased and then decreased in density and coverage,and the plant community structures gradually shifted from arbor-shrub and arbor-shrub-herb to shrub-herb or shrub.
中文关键词	群落结构 ; 物种多样性 ; 地下水 ; 塔里木河下游
英文关键词	community structure species diversity groundwater table the lower reaches of the Tarim River
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:4668221
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228519
作者单位	1.中国科学院研究生院, 北京 100043, 中国; 2.中国科学院新疆生态与地理研究所, 中国科学院绿洲生态与荒漠环境重点实验室, 乌鲁木齐, 新疆 830011, 中国; 3.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	白元,徐海量,张鹏,等. 塔里木河下游荒漠植物群落物种多样性及其结构特征分析[J]. 中国科学院新疆生态与地理研究所,2012,28(5):486-492.
APA	白元,徐海量,张鹏,赵新风,&傅荩仪.(2012).塔里木河下游荒漠植物群落物种多样性及其结构特征分析.生态与农村环境学报,28(5),486-492.
MLA	白元,et al."塔里木河下游荒漠植物群落物种多样性及其结构特征分析".生态与农村环境学报 28.5(2012):486-492.