汾河河口湿地植被数量分类与排序

在群落样方调查基础上,采用双向指示种分析（TWINSPAN）和除趋势对应分析（DCA）对汾河入河口湿地植被群落进行了数量分类和排序。TWINSPAN将78个样方分为18个群丛,并论述了各群丛的群落学特征。DCA排序结果反映了植物群落类型与环境梯度水分之间的关系,表明影响群丛分布格局的主导生态因子为土壤水分。

Quantitative Classification and Ordination of Wetland Vegetation from the Mouth of Fen River to the Yellow River

Classification and ordination of the plant community from the mouth of Fen River to the Yellow River were studied using field plots,and two-way indicator species analysis（TWINSPAN） and detrended correspondence analysis（DCA）.A total of 78 samples were divided into 18 associations by TWINSPAN and their community characteristics are described below.The results of DCA ordination reflected the relationship between plant community type and the environment gradient and showed that the distribution patterns of the associations were mainly affected by the water gradient of the soil.