贵州茂兰喀斯特森林植被演替序列的数量分析

Quantitative analysis on karst forest vegetation succession series in Maolan,Guizhou

综合运用双向指示种分析法(TWINSPAN)及除趋势对应分析法(DCA)进行分类及排序,确定了贵州茂兰国家级自然保护区森林群落的演替序列。结果表明:根据DCA排序可将研究区植被群落的演替过程分为四个阶段,即草地→灌丛→乔林→顶极群落;根据TWINSPAN分类结果可将植被分为11个群丛,其中,第、、、群丛为草本阶段,第、群丛为灌丛阶段,、、群丛为乔林阶段,第、群丛为顶极阶段。茂兰喀斯特植被演替顶极群落为亚热带常绿落叶阔叶林群落,是一种典型的地形—土壤演替顶极,是植被与当地环境长期适应的结果。

Based on quantitative classification method （TWINSPAN） and ordination technique （DCA）, the community succession series in Maolan National Nature Reserve is identified. According to DCA ordination, 4 stages are divided in the process of community succession, which orders as grassland →shrub community→arbor community→climax community. It is also showed after TWlNSPAN classification that 11 plant associations are differentiated,and among them, associations Ⅰ,Ⅱ,Ⅲ and Ⅳ belong to herb stage, Ⅴ and Ⅵ to shrub stage, Ⅶ, Ⅷ and Ⅸ to arbor stage, and the climax stages include Ⅹ and Ⅺ associations. Climax community type in Maolan karst vegetation is evergreen deciduous broadleaf forest, which is a typical terrain-soil succession climax resulted from long-term adaptation to local environment.