【摘要】 运用TWINSPAN和DCA相结合的数量生态学方法对吕梁山南段云邱山的植物群落进行分类和排序.结果表明,TWINSPAN分类将74个样方划分为18个群丛;分类结果较好地反映了植物群落类型与环境梯度之间的关系,并在DCA二维排序图上得到较好的验证;对74个样方和优势种的DCA排序表明影响吕梁山南段植物群落分布的主导生态因子是水分和土壤,而认为干扰加剧了该区域植被的退化.图2表1参13更多还原

【Abstract】 The Yunqiu Mountain is located in the south of the Lüliang Mountains,Shanxi.The plant communities in the area were classified and ranked by using the quantitative ecological methods of TWINSPAN(Two way indicator species analysis)and DCA(Detrended correspondence analysis).The results showed that the TWINSPAN classified 74 quadrats into 18 clusters,which satisfactorily described the relationship between plant community types and environmental gradients,and was further verified in the DCA two-dimensional ranking diagram.The ranking analysis suggested that the moisture content and soil type were the dominant ecological factors responsible for the flora distribution in the area,and the external disturbances facilitated the regional plant degradation there.Fig 2,Tab 1,Ref 13更多还原