%0 Journal Article
%T Effects of soil salt on the niche of main plant species in alpine meadow.<br>土壤盐分对高寒草甸主要植物生态位的影响
%A WANG Xin
%A HU Yu-kun
%A Rehemudula Adilla
%A LIU Yan-yan
%A LI Kai-hui
%A WANG Ji-yun
%A <br>王鑫
%A 胡玉昆
%A 热合木都拉·阿迪拉
%A 柳妍妍
%A 李凯辉
%A 王吉云
%J 应用生态学报
%D 2008
%I 
%X By using Levins niche breadth index and Cowell similarity index, the niche breadth and niche similarity of main plant species in Bayanbulak alpine meadow were calculated, based on 3 resources dimensions (soil moisture, organic matter, and available K) along four gradients of soil salt content. The results showed that with the increase of soil salt content, the average niche breadth of main constructive species Carex stenocarpa based on the 3 resources dimensions decreased from 0.4433 to 0.1740, while that of companion species Potentilla anserina increased from 0.1263 to 0.2215, indicating that the niche breadth of the species with low salt-endurance decreased gradually, while the species with relatively high salt-endurance had an increasing niche breadth, being able to be an important succession species. With the increase of soil salt content, the niche similarity between the species with low salt-endurance increased, while that between the species with high salt-endurance was in adverse. The niche similarity between C. stenocarpa and Kobresia capillifolia increased from 0.701 to 0.842, and that between P. anserina and Taraxacum pseudolpinum decreased from 1 to 0.708. The difference in biological characters among plant species should be the main reason for their different responses to soil salt content.
%K 土壤盐分
%K 生态位宽度
%K 生态位相似性
%K 高寒草甸
%K 土壤盐分含量
%K 高寒草甸
%K 植物
%K 生态位相似比例
%K 影响
%K alpine
%K meadow
%K species
%K plant
%K niche
%K soil
%K salt
%K 响应
%K 生物学特性
%K 蒲公英
%K 山地
%K 线叶嵩草
%K 演替
%K 耐盐性
%K 鹅绒委陵菜
%K 伴生种
%K 结果
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=5183B74A34500E5F7F8440969C0AB112&yid=67289AFF6305E306&vid=2A8D03AD8076A2E3&iid=DF92D298D3FF1E6E&sid=477F4C97C1F396EF&eid=E7F52902BDBF1DF2&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=1&reference_num=30