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根据76个小班标准地优势木平均高和林龄配制成树高曲线:H=-1.37786+3.12739A-0.11498A~2和样本标准差曲线:I_(nσn-1)=1.1161-3.1733(1/A),并据此编制出Ⅰ-214杨人工林立地指数表.
Based on the average height and age of dominant wood in 76 small classes, the tree height curve was formulated: H = -1.37786 + 3.12739A-0.11498A ~ 2 and the standard deviation curve of sample: I nnnn-1 = 1.1161-3.1733 1 / A), and according to the preparation of I-214 Yang plantation site index table.