干旱区生态环境知识资源中心(Arid): 艾比湖湿地植物群落变化对盐分环境梯度的响应

Arid

	艾比湖湿地植物群落变化对盐分环境梯度的响应
其他题名	Responses of Plant Diversity Changes in the Wetland of Lake Ebinur to Salinity Environment Gradient
	王盼盼; 李艳红; 张小萌
来源期刊	生态环境学报
ISSN	1674-5906
出版年	2015
卷号	24 期号:1 页码:29-33
中文摘要	土壤盐分是影响干旱区荒漠植物群落动态的决定因素之一。基于2012年5月和10月在艾比湿地调查的植物样方和实验得出的土壤表层盐分数据,利用聚类分析方法将39个土壤表层盐分数据划分为3个盐分梯度0.03%~0.73% (S1)、0.81%~1.73% (S2)和2.40%~3.12% (S3),分析艾比湖湿地植物群落植物多样性变化对土壤盐分环境梯度的响应。结果表明,(1)距湖15 km和距湖5 km采样点大部分处于第1个盐分梯度,属于轻度盐渍化;鸟岛、博河、鸭子湾、奎屯河、和距湖10 km处均处于第2个盐分梯度,盐渍化程度达到中-重度;湖边采样点,在3个盐分梯度各有分布。(2) 3个盐分梯度上的主要植被类型不同:S1以梭梭(Haloxylon ammodendron)、柽柳(Tamarix ramosissima)、白刺(Nitraria tangutorum Bobr)为主,并且出现的植被种类较多(37种);S2以柽柳(Tamarix ramosissima)、盐节木(Haloenemum strobilaceum)为主,出现的植被种类相对较少(11种);S3以盐节木(Haloenemum strobilaceum)、盐角草(Salicornia europaea)、芦苇(Phragmites australis)为主,出现的植被种类较少(7种),随土壤盐含量的升高,植被种类减少、群落生活型结构有所改变,草本比例减少,灌木和乔木比例有所增加。(3)植物Simposon指数、Shannon-Wiener指数和Margalef指数在中盐梯度下达到最大,最大值分别为0.84、2.28、3.82。(4)Pielow指数则是随着盐分梯度的上升呈下降趋势,在低盐梯度下达到最大值,最大值为1.26。(5)多样性指数在S3梯度下整体显著降低,即土壤盐分含量为2.40%~3.12%时对艾比湖湿地植物多样性的影响较大。
英文摘要	Soil salinity is the key factor which decides the dynamic of desert plant community in arid region. Statistics in this paper are based on the 39 pieces of minimumarea samples of surface soil salinity in the wetland of Lake Ebinur from May to October in 2012. By means of cluster analysis, these samples are divided into three scopes according to salinity grades, including 0.03~0.73(S1), 0.81%~1.73%(S2)and 2.40%~3.12%(S3). According to the research on the samples and plant diversity index, the changes of these plants responses to the diversity are analyzed. The results are as follows: (1) Most sampling spots 15 km and 5 km away from the lake fall in the S1, belong to the mild salinization sampling spots at Bird Island Station, Duck Bay, Kuitun River, and another one 10 km away from the lake, all fall in S2 and the degree of salinity reach mid-severe level; sampling spots right neighboring the lakeside cover S1, S2 and S3. (2) Theee main vegation type on the salinity gradient is different: In S1 most plants found there are Haloxylon ammodendron, Tamarix ramosissima, Nitraria tangutorum Bobr and are in rich diversity of 37. In S2 most plants found there are Tamarix ramosissima and Haloenemum strobilaceum, relatively few of vegation species(ll); In S3 most plants are Haloenemum strobilaceum, Salicornia europaea and Phragmites australis, few of vegation species(7), and the biotype structure of the plant community changes in accordance with the rising of the salinity grades, and plants of the grass family are decreasing, while shrubs and trees are increasing. (3) The Simposon diversity index, Shannon-Wiener diversity index, and Margalef species richness index are all rising at mid-grade salinity, and reach their maximum degree at 0.84,2.28 and 3.82; (4) Pielow Index is falling with the rising of salinity grades, and reaches its maximum at 1.26; (5) Diversity Index falls at Grade S3 remarkably, which means that the soil salinity grade at 2.40%~3.12% exerts best influence on the wetland plant diversity in Lake Ebinur.
中文关键词	艾比湖湿地 ; 盐分梯度 ; 植物群落 ; 多样性
英文关键词	Lake Ebinur wetland salinity grade plant community diversity
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5366263
来源机构	新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233104
作者单位	新疆师范大学地理科学与旅游学院, 乌鲁木齐, 新疆 830054, 中国
推荐引用方式 GB/T 7714	王盼盼,李艳红,张小萌. 艾比湖湿地植物群落变化对盐分环境梯度的响应[J]. 新疆师范大学,2015,24(1):29-33.
APA	王盼盼,李艳红,&张小萌.(2015).艾比湖湿地植物群落变化对盐分环境梯度的响应.生态环境学报,24(1),29-33.
MLA	王盼盼,et al."艾比湖湿地植物群落变化对盐分环境梯度的响应".生态环境学报 24.1(2015):29-33.