摘要
针对目前基于DEM的最大特征值法和标量平均法在小班坡向求算中存在误差大的问题,基于地形分析特点和矢量统计原理提出了一种计算小班坡向的矢量方法,并对比了该方法与前2种方法的实验数据计算结果,表明该方法求算的小班坡向与森林资源调查规程的要求更加吻合。
Focus on the problem of big differences in computing aspect factor of subcompartment between two methods of most eigenvalue based on DEM and scalar quantity, a new vector method for the aspect factor of subcompartment is proposed in terms of the characteristics of digital terrain analysis and the theory of vector statistics. Though comparing the results of experimental data of this new method with those two methods mentioned earlier, it reveals that the results from the vector method are more identical with the request of forest resource inventory rules.
出处
《林业调查规划》
2007年第2期22-25,共4页
Forest Inventory and Planning
基金
云南省重点基金项目(项目号:2002C0005Z)对地观测数据的计算机自动识别与电子地图应用基础研究资助
关键词
DEM
小班
坡向因子
矢量统计
DEM （digital elevation model）
subcompartment
aspect factor
vector statistics
