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几种测量方法在森林资源调查中的应用与精度分析
引用本文:徐文兵,高飞,杜华强.几种测量方法在森林资源调查中的应用与精度分析[J].浙江林学院学报,2009,26(1):132-136.
作者姓名:徐文兵  高飞  杜华强
作者单位:1. 浙江林学院,环境科技学院,浙江,临安,311300;合肥工业大学,土木建筑工程学院,安徽,合肥,230009
2. 合肥工业大学,土木建筑工程学院,安徽,合肥,230009
3. 浙江林学院,环境科技学院,浙江,临安,311300
基金项目:国家自然科学基金,浙江林学院科学研究发展基金 
摘    要:通过外业调查数据分析和理论推导,对林业调查中的几种测量方法进行了比较分析。研究表明:①罗盘仪由于制作粗糙,在标准样地测设中尚能满足规范要求,但随着距离和竖直角的增加,精度急剧下降,在大范围的林地面积和科研特殊需要的测量中操作不便捷,精度差,效率低;②全站仪测设样地边长不超过100 m时,半测回的距离测量可达到1/10 000,高差测量误差不超过1 cm,且受距离和竖直角的影响较小;③当面积大于3.34 hm^2,边长超过100 m时,手持全球定位系统(GPS)完全可代替罗盘仪,并可通过坐标差分或修正坐标转换参数来提高测量精度。另外,网络RTK的发展必将连同全站仪成为精准林业测量的主要仪器设备。

关 键 词:森林测计学  森林资源调查  精度分析  罗盘仪  全站仪  手持全球定位系统
收稿时间:2008-2-27
修稿时间:2008-6-11

Application and precision analysis of several surveying methods in forest resources survey
XU Wen-bing,GAO Fei,DU Hua-qiang.Application and precision analysis of several surveying methods in forest resources survey[J].Journal of Zhejiang Forestry College,2009,26(1):132-136.
Authors:XU Wen-bing  GAO Fei  DU Hua-qiang
Institution:XU Wen-bing, GAO Fei, DU Hua-qiang (1. School of Environment and Technology, Zhejiang Forestry College, Lin'an 311300, Zhejiang, China; 2. School of Civil Engineering, Hefei University of Technology, Hefei 230009, Anhui, China)
Abstract:This paper compares and analyzes several surveying methods in forestry resource investigation via an analysis of experiment datum and theory reasoning. The research findings are as follows: (1) The compass could only satisfy the criteria and standards of surveying sample plot due to its roughness; and its accuracy would decrease significantly while distance and vertical angle increased; the compass was inconvenient, imprecise and inefficient for large scale forestry acreage survey or special scientific research. (2) When the length measured by total station was not over 100 m, semi-observation accuracy of distance measuring could reach 1/10 000 and height measuring error wouldn't be over 1 cm; and the measuring was hardly affected by distance and vertical angle. (3) When acreage and length were over 3.34 hm^2 and 100 m respectively, handy global positioning system (GPS) could replace compass, and its measuring accuracy could be improved by coordinating difference or modifying parameter of coordinates transform. Besides, development of network real time kinematic (RTK) with total station would be main instruments for the precise forestry surveying. Ch, 2 tab. 13 ref.]
Keywords:forest mensuration  forestry resources survey  precision analysis  compass  total station  handy global positioning system(GPS)
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