通过对黔中地区响叶杨次生林群落物种多样性调查分析表明 ,物种多样性指数受乔灌木层丰富度的影响 ,并随海拔高递增而增加 ,随坡向自东向西递减 ,随土壤不同而异 ;依据多样性分析 ,对其改造结果显示 ,不仅提高了单位面积蓄积量 ,还保存了优良基因资源 ,发挥了森林多重效益。 Through the analysis of the species diversity of the ring plantations in the middle and lower reaches of the Central Guizhou Province, the results showed that the species diversity index was affected by the richness of the arbor and shrub layer, and increased with the elevation increasing, decreasing with the slope from east to west, While the results of the transformation showed that not only the unit area accumulation was increased but also the excellent gene resources were preserved and the multiple benefits of the forest were played.