%0 Journal Article %T Classification, species diversity, and species distribution gradient of permafrost wetland plant communities in Great Xing’an Mountains valleys of Northeast China.
大兴安岭沟谷冻土湿地植物群落分类、物种多样性和物种分布梯度 %A 孙菊 %A 李秀珍 %A 胡远满 %A 王宪伟 %A 吕久俊 %A 李宗梅 %A 陈宏伟 %J 应用生态学报 %D 2009 %I %X By using two-way indicator species analysis (TWINSPAN) and detrended correspondence analysis (DCA), this paper analyzed the environmental gradients of the species diversity and distribution of permafrost wetland plant communities in 12 valleys at different latitudes of the Great Xing’an Mountains. The plant communities in the 12 valleys could be classified into four plant associations, based on the latitudes. The classification results of TWINSPAN reflected well the relationships between the distribution of the plant associations and the latitudes, and these relationships were better validated by DCA ordination. The species diversity increased with decreasing latitude and increasing mean annual temperature, mean annual precipitation, mean temperature in January, and aridity. The dominant and co-dominant species in shrub and herb layers were mostly helophytes and hygrophytes. With decreasing latitude, the helophytes and hygrophytes decreased or disappeared, while mesophytes increased. %K Great Xing&rsquo %K an Mountains %K permafrost wetland %K two-way indicator species analysis (TWINSPAN) %K detrended correspondence analysis (DCA) %K species diversity
大兴安岭 %K 冻土湿地 %K 双向指示种分析 %K 除趋势对应分析 %K 物种多样性 %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=A0CC1CA0267165007CFAF15178B61582&yid=DE12191FBD62783C&vid=A04140E723CB732E&iid=9CF7A0430CBB2DFD&sid=53A9347E622951C1&eid=112F428C63DFB16D&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=1&reference_num=0