3.健杨人工林立木二元材积表

V=4.554391×10-5D1.802523H1.091534(材积:m3)胸径(cm)树高(m)33.544.55567891011120.0030.0040.0030.0050.0060.0040.0050.0070.0090.0040.0060.0080.0100.0120.0050.0070.0090.0110.0140.0170.0200.023胸径(cm)树高(m)5.566.577.550.0050.0060.006　　60.0070.0080.0090.010　789101112131 ......（本文共 6673 字 ）     [阅读本文] >>