基于“3S”技术的镇雄县森林资源监测分析

Monitoring and Analysis of Forest Resources in Zhenxiong County Based on "3S" Technology

以高分辨率卫星影像遥感数据(RS)为年度监测的主要信息源,结合上一年度森林资源主要指标监测成果及最新森林资源管理档案等资料,利用地理信息系统ArcGIS软件进行室内判读区划,并借助GPS开展外业调查核实,形成本期森林资源主要指标检测数据。同时,将本期数据与前期森林资源监测结果进行比对,分析森林资源变化情况以及原因。结果表明,规划调整、造林更新、建设项目使用林地等是导致镇雄县森林面积变化的主要因素。

Taking high-resolution remote sensing data of satellite images(RS) as the main information source of annual monitoring, combined with the monitoring results of the main indicators of forest resources in the previous year, and the latest forest resources management files, the GIS software ArcGIS was used for indoor interpretation and zoning, and GPS was used for field investigation and verification to form the detection data of the main indicators of forest resources in this period. At the same time, the current data were compared with the previous monitoring results of forest resources, and the changes and reasons of forest resources were analyzed. The results showed that planning adjustment, afforestation and regeneration, and the use of forest land in construction projects were the main factors leading to the change of forest area in Zhenxiong County.