5.小钻杨人工林立木二元材积表

V=3.789537×10-3+3.336261×10-5D2H(材积:m3)胸径(cm)树高(m)33.544.55567891011120.0060.0070.0090.0100.0070.0080.0100.0110.0070.0090.0100.0120.0150.0170.0080.0090.0110.0130.0160.0190.0220.0250.0080.0100.0120.0140.0170.0200.0240.028胸径(cm)树高(m)5.566.577.55678910111213 ......（本文共 4877 字 ）     [阅读本文]>>