摘要
采用并行电阻率CT技术,通过在树干截面布置微电极测试系统,对重阳木和梧桐树两种树干断面进行监测,分别获得四个季节电阻率精细分布特征。其结果对比表明:不同树种介质结构不同,木材电阻率分布差异明显,重阳木电阻率值分布均匀性较梧桐树差,表明其内部含水特征不同;同一树种在不同时间内电阻率值变化显著,表明树木内部水分含量随时间发生改变,总体上夏季较冬季含水丰富。利用该方法较为准确地查明了树干内部水分分布特征,可为树木含水特征探查提供新的手段。
By using the parallel resistivity CT technique, the trunk cross sections of Bischoifa polycarpa and Frimiana simplex were monitored in the four seasons through setting a micro-electrode testing system on the sections, thus obtaining the fine distribution characteristics of the trunk sections’ resistivity respectively. The compared results show that because the two tree species’ medium structure are different, their wood resistivity distribution differences are significant, and the resistivity distribution uniformity of Bischoifa polycarpa was worse than that of Frimiana simplex, indicating that the internal water characteristics were different in the two trees;And the resistivity values of the same tree species in different time changed significantly, indicating that the trees internal moisture content changed over time, and generally the content of the trees were more abundant in summer than in winter. This method accurately found out the distribution characteristics of the trunk internal moisture, so it can provide new means to detect and study the trees’ moisture characteristics.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2014年第10期132-136,共5页
Journal of Central South University of Forestry & Technology
基金
国家自然基金重点项目(51134012)
关键词
树木探查
树木含水特征
重阳木
梧桐树
并行电阻率CT技术
tree exploration
aquiferous characteristics of tree
Bischoifa polycarpa
Frimiana simplex
parallel resistivity CT technique
