滇东南石漠化地区封山育林前后群落生态学特征比较

通过样地法比较了滇东南石漠化地区封山育林前后植被的群落学特征，从生活型谱、叶型谱、光照生态类型谱、水分生态类型谱和优势植物等群落特征看,封山育林后群落的水湿条件有所改善，群落正向地带性植被—半湿性亚热带常绿阔叶林演替；从物种多样性来看，封山育林后群落的物种丰富度、物种多样性指数、生态优势度和群落均匀度均有很大的提高，物种多样性增加，群落稳定性增强，且破坏后修复能力增强。结果说明封山育林措施是石漠化地区植被恢复的很好措施之一。西北林学院学报21卷第5期李品荣等滇东南石漠化地区封山育林前后群落生态学特征比较

Comparison on the Community Ecological Characteristics of before and after Closing Hillsides to Facilitate Afforestation in Rock Desertification Area of Southeast Yunnan

The life form spectrum,leaf size spectrum,light and water ecology spectrum,predominance plant of before and after closing hillsides to facilitate afforestation community in rock desertification area of southeast Yunnan were studied by using plot method(quadrat investigation method).The results showed that phanerophytes was the dominant life form.The life form spectrum and leaf size spectrum of the community was similar to that of subtropical semi-humid evergreen broad-leaved forest in middle Yunnan.The moisture and humidity in the community has been improved.The species richness,diversity index,ecological dominance and community evennessof the community have been improving,and with a tendency climax succession.This suggests that closing hillsides to facilitate afforestation is one of good vegetation restoration approaches in rock desertification area of southeast Yunnan.