用輪尺或圍尺測量,以cm為單位,量至mm。...[繼續(xù)閱讀]

    用測高器、標(biāo)桿或竹竿測量,以m為單位,量至cm。...[繼續(xù)閱讀]

    在測得立木的胸徑、樹高后,查出材積表中相應(yīng)的胸徑和樹高,即為該立木的材積(m3)。若胸徑和樹高與表中的胸徑和樹高不一致時(shí),使用內(nèi)插法計(jì)算立木的材積。也可將測得的胸徑、樹高直接代人材積計(jì)算公式,求算立木材積。【例1】...[繼續(xù)閱讀]

    V=-2.554327×10-3+7.426068×10-4D+3.316892×10-5(D2H)0.986431(材積:m3)胸徑(cm)樹高(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胸徑(cm)樹高(m)5.566.577.550.0050...[繼續(xù)閱讀]

    V=5.028364×10-5D1.884364H0.965895(適用品系:沙蘭楊、I214、中荷1號(hào)、I-107、L35、T26、T66)(材積:m3)胸徑(cm)樹高(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胸徑(...[繼續(xù)閱讀]

    V=4.554391×10-5D1.802523H1.091534(材積:m3)胸徑(cm)樹高(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胸徑(cm)樹高(m)5.566.577.550.0050.0060.006　　60.0070.0080.0090.010　789101112131...[繼續(xù)閱讀]

    V=5.588911×10-5(D2H)0.9235978(適用品系:I69/55、I63/51、I72/58)(材積:m3)胸徑(cm)樹高(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胸徑(cm)樹高(m)6.577.588.5678910111213...[繼續(xù)閱讀]

    V=3.789537×10-3+3.336261×10-5D2H(材積:m3)胸徑(cm)樹高(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胸徑(cm)樹高(m)5.566.577.55678910111213...[繼續(xù)閱讀]

    V=0.000036D1.65127H1.28216(適用品系:I-107楊、I-108楊)(材積:m3)胸徑(cm)樹高(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胸徑(cm)樹高(m)7.588.599.5678...[繼續(xù)閱讀]

    V=1.367857×10-4D1.666776H0.8936263(材積:m3)胸徑(cm)樹高(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胸徑(cm)樹高(m...[繼續(xù)閱讀]