摘要
为帮助林业资源管理者制定科学的森林经营管理决策,了解林区森林资源信息是十分必要的。林区往往规模较大,森林资源信息处理工作相对繁杂,为此设计一种基于WebGIS的林区森林资源地理信息系统。设计了三个关键模块,包括绘图模块:利用WebGIS的制图工具VirtualGIS Viewer,根据遥感影像以及数字地面模型数据,在三维建模算法的帮助下绘制林区三维地图;资源变化模块:借助WebGIS中的Geodatabase工具以及其中包含的算法分析森林资源变化;资源覆盖监测模块:利用WebGIS的Arc GIS Explorer工具栏中的归一化植被指数算法明确森林资源覆盖度。结果表明:林区主要有四种类型的用地,分别为耕地、建设用地、林地、未利用地;从2018—2022年之间该林区的森林资源面积减少,森林资源减少。
It is necessary to understand forest resource information in forest regions in order to help forestry resource managers make scientific forest management decisions.Usually,the forest regions are large in scale and the processing of forest resource information is relatively complex.Therefore,a WebGIS⁃based forest resource geographic information system is designed.Three key modules are designed,including a drawing module(by utilizing the WebGIS mapping tool named VirtualGIS Viewer and according to the remote sensing images and digital terrain model data,a 3D map of forest regions is drawn with the help of 3D modeling algorithms),a resource change module(analyzing forest resource changes with Geodatabase tools and algorithms included in WebGIS),and a resource coverage monitoring module(by utilizing the normalized difference vegetation index(NDVI)algorithm in the Arc GIS Explorer toolbar of WebGIS to clarify forest resource coverage).The results show that there are four main types of land in forest regions,namely arable land,construction land,forest land and unused land,and the forest resource area and forest resources in this forest regions had decreased from 2018 to 2022.
作者
吕跃东
朱万才
张妍妍
LÜYuedong;ZHU Wancai;ZHANG Yanyan(Heilongjiang Provincial Institute of Forestry Science,Harbin 150000,China)
出处
《现代电子技术》
2023年第19期171-174,共4页
Modern Electronics Technique
基金
黑龙江省省属科研院所科研业务费项目(CZKYF2020A003)。
