【摘要】 应用双向指示种分析(TWINSPAN)和除趋势对应分析(DCA)相结合的方法,对长治湿地植物进行数量分类和排序,将该湿地划分为8个群丛类型,分别位于土壤水分含量不同的地区。分类结果很好地反映了植物群丛类型与环境因子之间的关系,并在DCA二维排序图上得到较好的验证。DCA排序轴反映了土壤湿度的梯度变化,表明水分条件是影响该地植物群丛变化的主要生态因子。更多还原

【Abstract】 By using the combination of TWINSPAN and DCA,this paper classifies and ranks the plants in Zhangze Reservoir’s Wetland of Changzhi City into 8 associations that are located at different areas according to the moistures.The results of the classification and ordination reflect well the relationship between the types of plant associations and the environmental factors which are verified well in the two-dimension ordination diagram by DCA.The ordination axes of DCA reflect the gradient change of soil moisture,which shows that water condition is the main ecological factor that influences the plant association.更多还原