提出了利用平板扫描仪、电脑等常规办公设备测量树木年轮宽度的数字图像测量方法,分别应用数字图像测量法和树木年轮分析仪测量了5个年轮圆盘的宽度,以年轮分析系统为基准,对数字图像法进行了精度检验,并从测量效率、经济成本等方面对两种方法进行了综合对比分析。结果表明:数字图像测量法的精度完全能够满足年轮宽度相关研究的要求,且具有测量方法简单、设备普及率高、经济成本低等优点。
On the basis of summarizing the measures of tree-ring width,this paper puts forward a new method to measure tree-ring width using digital image form flatbed scanner and computer.Five tree-ring discs were measured respectively with FSDI and Tree Ring Analysis System.According to TRAS,the result of verifying the precision of the new method shows that FSDI can satisfy the demand of tree-ring research.The synthetic comparison between both methods’ efficiency and economic cost also indicates that the new method has advantages of simple measure,easy availability of equipment,low economic cost and so on.
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