生态环境学报Issue(1)：29-33,5.DOI:10.16258/j.cnki.1674-5906.2015.01.005
艾比湖湿地植物群落变化对盐分环境梯度的响应
Responses of Plant Diversity Changes in the Wetland of Lake Ebinur to Salinity Environment Gradient
摘要
Abstract
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(11); 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.关键词
艾比湖湿地/盐分梯度/植物群落/多样性Key words
Lake Ebinur wetland/salinity grade/plant community/diversity分类
生物科学引用本文复制引用
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].生态环境学报,2015,(1):29-33,5.基金项目
国家自然科学地区基金项目（41171036）；自治区科技计划项目（201433115）；新疆师范大学研究生科技创新项目基金 （）
