勐腊县傣族“龙山”森林植被类型分析

Plots survey had been conducted in dragon mountain forest of Tai ethnic minority in Mengla county in December of 2008. This paper analyzed present conditions and composition of forest community structure, which was concerned as tropical seasonal rain forest and tropical monsoon forest of remnant semi-primitive fragment, the former occupying a large proportion. The Tai dragon mountain still maintained exterior structural characteristics and basic species composition of tropical seasonal rain forest. But with stronger human interferences, the community structure has changed into incomplete, the plants' richness has lowered and species diversity index has extremely decreased. In addition, the component of rain forest in fragmented tropical seasonal rain forest might be replaced by other pioneer vegetation types to some extent.