辽东三块石天然次生林的排序

 利用主成份分析(PCA)和相互平均法(RA)，把辽宁省新宾县三块石林场次生林划分为三个类型：Ⅰ蒙古栎林；Ⅱ胡桃楸-水曲柳林，Ⅲ杂木林。影响这些次生林排序的主导因子是海拔和坡向。Fisher判别分析验证了PCA对该地区次生林分类是正确的，同时还可以利用Y= 0.0383X1+0.0362X2+0.0944X3+0.0133X4+0.1191X5-0.0510X6，预测调查地区的次生林类型。

ORDINATION OF NATURAL SECONDARY FOREST AT SANKUAISHI IN THE EASTERN PART OF LIAONING PROVINCE

In this paper,by means of Principal Component Analysis(PCA)and Reciprocal Averaging(RA),3 natural secondary forest types were cl- assified at Sankuaishi forestry farm of sin Bin county in Liaoning pro- vince.I.Quercus mongolica forest type II.Juglans mandshurica-Fraxinus mandshurica forest type III.Broad-leaf mixed forest type.The ordination of types significantly were influenced by altitude,aspect. Accrding to Fishes test discriminant analysis,the classificants were recognized as justified.Using discriminat eqati0n:Y=0.0383X_1+0.0362X_2 +0.0944X_3+0.0133X_4+0.1191X_5-0.051X_6 can be predicted natural second- ary forest types.