CAJ | 학술논문

以东北林业大学实验林场中水曲柳、白桦、落叶松等3种含水率为饱和状态的活立木为研究对象，利用Arbotom应力波测试仪研究了不同检测角度（0°、15°、45°和75°）对应力波传播速度的影响。利用Excel和SPSS软件包，对所得实验数据进行含水率、胸径等因素与应力波传播速度的相关性分析。结果表明，当只有含水率对应力波传播速度影响较大时，检测角为45°可大幅减少含水率对应力波传播速度的影响；当只有胸径对应力波传播速度影响较大时，检测角为75°可大幅减少胸径对应力波传播速度的影响。当含水率和胸径对应力波影响都较大时，根据不同树种采用不同的检测角度来减小含水率和胸径对应力波传播速度的影响；白桦选取检测角为75°，水曲柳和落叶松选取检测角为45°。
이동북임업대학실험림장중수곡류、백화、락협송등3충함수솔위포화상태적활립목위연구대상，이용Arbotom응력파측시의연구료불동검측각도（0°、15°、45°화75°）대응력파전파속도적영향。이용Excel화SPSS연건포，대소득실험수거진행함수솔、흉경등인소여응력파전파속도적상관성분석。결과표명，당지유함수솔대응력파전파속도영향교대시，검측각위45°가대폭감소함수솔대응력파전파속도적영향；당지유흉경대응력파전파속도영향교대시，검측각위75°가대폭감소흉경대응력파전파속도적영향。당함수솔화흉경대응력파영향도교대시，근거불동수충채용불동적검측각도래감소함수솔화흉경대응력파전파속도적영향；백화선취검측각위75°，수곡류화락협송선취검측각위45°。
The experiment was conducted to study the effect of different detection angles (0°, 15°, 45°and 75°) on propagation velocity of stress wave in standing trees ( Fraxinus mandshurica Rupr., Betula platyphylla Suk and Larix gmelinii Rupr) with saturated water content.With stress wave testing equipment, the detection angle should be limited according to the variance of the trees’ diameter at the breast height (DBH) and wood moisture content.When the wood moisture contents of trees influence the propogation velocity of stress wave greatly, the detection angle of 45°is the optimal angle, and it can reduce the influence of wood moisture content on stress wave velocity in trees.When the influence of trees’ DBH is great, the detection angle of 75°is the best angle that can reduce the influence of DBH on stress wave velocity in trees.When DBH and wood moisture contents of trees have a great influence on stress wave velosity, the optimal detection angle de-pends on tree species.The best detection angle for B.platyphylla Suk is 75°, and 45°for F.mandshurica Rupr.and L. gmelinii Rupr.