摘要
以优势树种铅笔柏为研究对象,将LIDAR技术测量的抽样木树高与全站仪实测树高进行可行性研究.在可行性的基础上,将LIDAR测得的树高进行改正,得到林木的调查因子——树高.将此因子与抽样木的材积进行回归分析,建立起两者之间的回归模型.统计出测区的铅笔柏的总株数和每株木的树高,根据树高和材积之间的回归模型,计算出测区的铅笔柏的蓄积量,并与用标准样地法测得的蓄积量进行对比,发现两者的差距不大,其相对误差为4.25%,可以满足林业上对林分蓄积量的调查,为林分蓄积量的调查提供了一种新的方法.
With dominant species Sabina viginiana as the research object,the authors carried out feasible research about the height of sample trees measured by the LIDAR technology and by the total station instrument.On the premise of feasibility,the authors corrected the length of trees measured by LIDAR technology,and then obtained the forest investigation factor—tree height.With the regression analysis between the factor and sample trees' volume,the authors set up the regression model between the two.Counting the total number of the S.viginiana and height of each tree, the total forest volume of S.viginiana in the examining area was calculated through regression model of volume of timber and tree height.The result was compared with forest volume measured by the standard field approach,and there was no big difference.Its relative error was 4.25,and could satisfy the survey of forest stand volume in the forest.This method offers a new choice for the survey of forest stand volume in forest.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2007年第S2期45-51,共7页
Journal of Beijing Forestry University
基金
北京市自然科学基金重点项目(4041002)
关键词
LIDAR技术
蓄积量
标准地法
铅笔柏
LIDAR technology,forest volume,standard field approach,Sabina viginiana
