用25个退化喀斯特森林样地作为研究对象，采用主分量分析方法，把25个样地划分成11个森林类型，并对各类型的分布及特征进行阐述。
The 25 plots of degraded karst forests were chosen as the research objects and 25 plots were divided into 11 forest types by principal component analysis (PCA).
导致贵州喀斯特森林发生退化的原因是火烧、开垦、放牧和樵采。
Fire, reclamation, herd, and cut led to degradation of Karst forest in Guizhou Province.
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