用轮尺或围尺测量,以cm为单位,量至mm。...[继续阅读]

    用测高器、标杆或竹竿测量,以m为单位,量至cm。...[继续阅读]

    在测得立木的胸径、树高后,查出材积表中相应的胸径和树高,即为该立木的材积(m3)。若胸径和树高与表中的胸径和树高不一致时,使用内插法计算立木的材积。也可将测得的胸径、树高直接代人材积计算公式,求算立木材积。【例1】...[继续阅读]

    V=-2.554327×10-3+7.426068×10-4D+3.316892×10-5(D2H)0.986431(材积:m3)胸径(cm)树高(m)33.544.55567891011120.0040.0050.0070.0040.0060.0080.0040.0060.0090.0110.0140.0170.0050.0070.0090.0120.0150.0190.0050.0070.0100.0130.0170.0200.0240.028胸径(cm)树高(m)5.566.577.550.0050...[继续阅读]

    V=5.028364×10-5D1.884364H0.965895(适用品系:沙兰杨、I214、中荷1号、I-107、L35、T26、T66)(材积:m3)胸径(cm)树高(m)33.544.55567891011120.0030.0040.0030.0050.0070.0080.0040.0060.0080.0100.0120.0150.0040.0060.0080.0110.0140.0160.0200.0230.0050.0070.0090.0120.0150.0180.0220.026胸径(...[继续阅读]

    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...[继续阅读]

    V=5.588911×10-5(D2H)0.9235978(适用品系:I69/55、I63/51、I72/58)(材积:m3)胸径(cm)树高(m)44.555.5656789101112130.0040.0040.0060.0080.0050.0070.0090.0120.0140.0050.0070.0100.0130.0160.0190.0230.0060.0080.0110.0140.0170.0210.0250.0290.033胸径(cm)树高(m)6.577.588.5678910111213...[继续阅读]

    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...[继续阅读]

    V=0.000036D1.65127H1.28216(适用品系:I-107杨、I-108杨)(材积:m3)胸径(cm)树高(m)55.566.5756789100.0040.0050.0070.0090.0110.0130.0050.0060.0080.0100.0120.0140.0050.0070.0090.0110.0130.0160.0060.0080.0100.0120.0150.0180.0060.0080.0110.0140.0160.020胸径(cm)树高(m)7.588.599.5678...[继续阅读]

    V=1.367857×10-4D1.666776H0.8936263(材积:m3)胸径(cm)树高(m)33.544.5550.0050.0060.007　　60.0070.0080.0090.010　7891011120.0090.0120.0140.0170.0110.0130.0160.0190.0230.0120.0150.0180.0220.0260.0300.0130.0170.0200.0240.0290.0330.0150.0180.0220.0270.0310.036胸径(cm)树高(m...[继续阅读]