中文摘要：

通过对树木年轮微密度图谱进行分析,建立了年轮组成成分数学模型,采用虚拟仪器专用软件LabVIEW为工作平台,设计了TRAS树木年轮分析系统,系统包括数据读取、数据处理、数据存储、结果显示等四大功能模块。TRAS系统采用自动判读和人机交互相结合的方式删除伪年轮、插入断年轮;采用动态阈值法和梯度法自动判定年轮分界点和早晚材分界点;通过数学模型一次读取年轮数、年轮宽度和年轮密度组成成分。

英文摘要：

The mathematical modeling of tree-ring component was established based on micro-density spectrum analyzing. TRAS（Tree Ring Analysis System）, employing the LabVIEW as the development platform, includes 4 functional modules： data acquisition, data processing, data storage and result display. TRAS can analyze not only the data measured by densimeter, but also the data measured by image method. TRAS can delete disturbance ring and inserts lost ring by the method of combination automatic judgment with man-machine interaction,＂ automatically demarcate boundary points between springwood and late wood by the method of dynamic shareholding method and gradient method; read the tree-ring counts and the constituents of tree-ring width and density only once by mathematical model.