基于微钻阻力的树木年轮测量方法研究  

Tree-rings Measurement Method Based on Micro Drill Resistance

作　　者：姚建峰[1] 赵燕东[2] 符利勇[3,4] 宋新宇 卢军 黎沙沙[1] YAO Jianfeng;ZHAO Yandong;FU Liyong;SONG Xinyu;LU Jun;LI Shasha(College of Computer and Information Technology,Xinyang Normal University,Xinyang 464000,China;School of Technology,Beijing Forestry University,Beijing 100083,China;Research Institute of Forest Resources Information Techniques,Chinese Academy of Forestry,Beijing 100091,China National Forestry and Grassland Administration,Beijing 100091,China;Key Laboratory of Forest Management and Growth Modelling,National Forestry and Grassland Administration,Beijing 100091,China;School of Mathematics and Statistics,Xinyang Normal University,Xinyang 464000,China)

机构地区：[1]信阳师范学院计算机与信息技术学院,信阳464000 [2]北京林业大学工学院,北京100083 [3]中国林业科学研究院资源信息研究所,北京100091 [4]国家林业和草原局森林经营与生长模拟重点实验室,北京100091 [5]信阳师范学院数学与统计学院,信阳464000

出　　处：《农业机械学报》2022年第4期52-59,共8页Transactions of the Chinese Society for Agricultural Machinery

基　　金：河南省科技发展计划项目(212102110209);河南省高等学校重点科研项目(22A220002);中央级公益性科研院所基本科研业务费专项资金重点项目(CAFYBB2018SZ007)。

摘　　要：针对前期研制的微钻阻力仪存在钻针钻入树木方向偏离直线方向、无法准确获取树木年轮宽度等问题,对微钻阻力仪的机械结构和软件算法进行了改进,提出了改进钻针形状和增加钻针支撑挡片的改进措施,给出了年轮宽度的计算方法。分别使用自制微钻阻力仪、Resistograph 650-s型微钻阻力仪、Lintab 6型高精度树木年轮分析仪测量9个马尾松圆盘的年轮信息,以Lintab 6型树木年轮分析仪测试结果作为真值,分别计算自制微钻阻力仪和Resistograph 650-s型微钻阻力仪的年轮识别错误率和年轮宽度测量精度。结果表明:2个微钻阻力仪的平均年轮宽度的测量精度达85%左右,说明使用微钻阻力法测量树木年轮宽度可行;自制微钻阻力仪的年轮识别错误率比Resistograph 650-s型微钻阻力仪低12.7个百分点,年轮宽度测量精度比Resistograph 650-s型微钻阻力仪高1.47个百分点,说明自制微钻阻力仪机械结构设计合理,年轮识别方法可行。In view of the problems of the micro drill resistance instrument developed in the early stage,such as the direction of the drill drilling into the tree deviated from the straight line,the width of tree-rings cannot be obtained accurately,the mechanical structure and software algorithm of the micro drill resistance instrument were redesigned,the improvement measures of changing the drill shape and adding the drill support baffle were put forward,and the calculation method of the tree-rings’width was given.The principle and the expression method of drill resistance of self-made micro drill resistance instrument was described.The number of tree-rings and the width of tree-rings of nine Pinus massoniana discs were tested by self-made micro drill resistance instrument,Resistograph 650-s and Lintab 6 respectively.The results measured by Lintab 6 were taken as the true value.The tree-rings recognition error rate and the measurement accuracy of tree-rings’width of self-made micro drilling resistance instrument and Resistograph 650-s were calculated respectively.Most boundaries of tree-rings identified by the two micro drill resistance instruments corresponded to the late wood position of the tree-rings.The measurement accuracy of tree-rings width of self-made micro drill resistance instrument was 86.40%.The measurement accuracy of tree-rings width of Resistograph 650-s was 84.93%.And the average accuracy of the tree-rings width measured by the two instruments was as high as 85%,which showed that the micro drill resistance instrumentwas feasible to measure the number of tree-rings and the width of tree-rings.The error rate of tree-rings recognition of self-made micro drill resistance instrument was 12.7 percentage points lower than that of Resistograph 650-s,and the measurement accuracy of tree-rings width of self-made micro drill resistance instrument was 1.47 percentage points higher than that of Resistograph 650-s,which indicated that the mechanical structure design of self-made micro drill resistance instrument wa

关 键 词：微钻阻力仪 树木年轮 钻针阻力 峰谷算法 

分 类 号：S758.7[农业科学—森林经理学]