利用应力波和阻抗仪两种仪器对旱柳行道树内部腐朽情况进行检测，应力波法每个断面采用10~12个传感器，阻抗仪法每个断面测试2~4个方向。结果表明：由应力波断层扫描得到的二维图像和由阻抗仪得到的阻力曲线均能较准确地反映活立木内部腐朽的位置、程度等状况，两者对应关系较好；阻抗仪每个测试方向的平均阻力与相应方向应力波传播速度之间呈现一定相关性，相关系数 r ﹥0.5；每个测试断面上的整体平均阻力与应力波平均传播速度之间有显著的相关性，相关系数 r ＝0.817。这为联合两种仪器的检测结果制定一个表征立木腐朽程度的量化指标奠定了基础。%A study was carried out to detect the inner decay of Salix matsudana avenue trees by using stress wave and Resistograph techniques. In each cross section of a tree,10 -12 stress wave sensors were used and 2 -4 directions were tested by resisgraph. The results showed that both the 2D graphs from stress wave detection and resistance curves of Resistograph could determine the location and degree of inner decay in standing trees. A good corresponding relationship was found between them. In each direction,the average resistance and the stress wave velocity were correlated with correlation coefficients above 0. 5. When a whole cross section was considered,a more significant correlation between the average resistance and stress wave velocity was found with a correlation coefficient of 0. 817. These findings lay a foundation of combining these two techniques to build a quantitative indicator to measure the decay degree of standing trees.
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