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本文通过对南方林区植被指数与林分平均直径、林分郁闭度的相关分析表明，阳坡的林分平均直径、林分郁闭度与植被指数有着显著相关关系，特别是松树林的林分平均直径与植被指数的关系，可以用线性关系来模拟。通过对植被指数的单因素方差分析，应用归一化差值植被指数NDVI1（L4—L3）／（L4＋L3）和比值植被指数RVI2（L4/L2）有助于南方林区地类的辨别。
In this paper, the correlation analysis between the vegetation index and the mean diameter of forest and the canopy density of the forest area in southern China shows that there are significant correlations between the mean diameter of the forest stand and the canopy density and the vegetation index, especially in the pine forest The relationship between the mean stand diameter and vegetation index can be simulated by linear relationship. Through the single factor analysis of variance of vegetation index, the application of normalized NDVI (L4-L3) / (L4 + L3) and RVI2 (L4 / L2)