基于GIS平台的森林资源调查模拟抽样软件性能及其应用分析

Characteristics Introduction and Application Analysis of GIS-based Sampling Simulation Software of Forest Resources Survey

了解森林资源的现状及变化趋势是森林资源管理工作的前提。针对传统的森林抽样方法工作步骤存在着劳动强度大、布点结果可视性差、内业处理工作复杂、无法进行多方案模拟实验与比较分析的不足,本文在介绍基于GIS平台的抽样模拟软件基本功能基础上,分析了Hawth’s Tools,RRQRR,S-Draw,SSSI这4种模拟抽样软件的性能特征;并通过南京紫金山国家森林公园蓄积量模拟抽样案例研究,对各种软件的抽样平均误差、抽样效率进行比较分析,以期为模拟抽样软件在我国森林资源调查领域的普及应用提供科学依据。

Detailed knowledge of the current status and developing trends of forest resources is the precondition of plan making of forest resources management. There are some weakness in the procedure of traditional forest sampling , such as labor-intensive, poor visibility of spatial distribution of sampling points, complex working of indoor data analysis, unable to do multiple scenarios simulation and comparison, etc. In the article, the neces- sary functions of GIS-based simulation software were firstly described. Then, the characteristics of four sam- piing simulation software, namely Hawth＇ s Tools, RRQRR, S-Draw, SSSI were introduced. Finally, two crite- ria of average sampling error and sampling efficiency were created to compare the performance of fo~ sampling simulation software through simulation sampling on forest stock in Zijin Mountain National Forest Park in order to provide scientific basis for the popularization of sampling simulation software.