利用相对树高曲线法建立杉木、马尾松的分树种和不分树种的模型，结合二元材积表估测林分和样地的立木蓄积，接近用二元材积表法估测立木蓄积的精度，比一元材积表法估测的精度有大幅度的提高 The relative tree height curve method was used to establish the tree species and non-tree species models of Chinese fir and Pinus massoniana, and the binary tree volume table was used to estimate the tree stand volume. The binary table was used to estimate the precision , Than the single volume table estimation accuracy has greatly improved