电子经纬仪自动精测立木材积原理与应用  

Principle and Application of Automatic Accurate Measurement of Stem Volume by Using Electronic Theodolite

作　　者：孙梦营[1] 冯仲科[1] 闫飞[1] 马苏力娅 樊仲谋[1] 郑君[1] 

机构地区：[1]北京林业大学测绘与3S技术中心,北京100083 [2]北京林业大学园林学院,北京100083

出　　处：《林业资源管理》2013年第5期80-84,共5页Forest Resources Management

基　　金：国家科技支撑计划项目(2012BAH34B01);林业科技成果国家级项目推广(201146)

摘　　要：伐倒树木测量树木材积是破坏性实验,还会花费大量的财力和物力,传统无伐倒测量材积方法的精度又太低。提出一种利用电子经纬仪测量立木材积的方法。在内蒙古自治区赤峰市喀喇沁旗旺业甸实验林场中采集202棵落叶松的胸径、地径和树干任意处直径左右两侧的水平夹角等数据,结合相应软件精确求算立木材积,同时选取180棵落叶松结合最佳经验方程拟合旺业甸地区落叶松最佳一元、二元材积模型,并将其余22棵落叶松数据代入式中进行对比。通过数据对比分析得出:利用电子经纬仪测量立木材积与传统经验公式求算立木材积结果相近,可替代传统伐倒树木测量材积的方法。Measuring tree volume by hewing down is a destructive experiment which costs many financial and material resources. In practice,stumpage measuremental method can avoid the forest＇s damage,but being limited to the instrument environment,accuracy and large amount of work. This paper proposed a new measurement on stem volume by using electronic theodolite. In this study,202 larch trees in the stands of Experimental Forest Farm of Wangyedian,Harqin Banner,Chifeng City,Inner Mongolia Autonomous Region,were measured in high precision with their DBH,ground diameter,and tree height data using the related software. In addition,180 larch trees were selected for establishing the best fitted unigram volume model and binary volume model by using empirical equation. The volumes of the rest 22 larch trees were calculated by the equation for comparing. The results indicated that the volume was very close by using electronic theodolite and traditional empirical formula,which means that the new method of using electronic theodolite to calculate stem volume of trees could substitute the traditional method of calculating stem volumes by cutting them down.

关 键 词：电子经纬仪 胸径 树干材积 测树精度 二元材积表 

分 类 号：S24[农业科学—农业电气化与自动化] S758[农业科学—农业工程]