高分辨率林业生态工程监测系统研建与应用

Developing a system for monitoring high resolution forestry ecological projects

林业生态工程监测是林业管理和生态建设的基础性工作,对于监督工程落实情况和调整相关林业政策具有重要意义。选取重庆市云阳县为研究区,以高分1号卫星遥感数据、二类调查数据以及基础地理数据等为基础,通过遥感影像特征提取、OTSU阈值分割和面向对象分类等方法,研发林业生态工程地块识别、成林提取、森林类型分布提取等算法模型,建立满足林业生态工程动态监测业务需求的高分遥感应用技术体系,并结合空间数据库技术和ArcGIS Engine二次开发技术,实现将数据管理、造林核查检查、森林资源动态监测和林业专题产品生产集成于一体的监测应用示范系统。高分辨率卫星数据与遥感监测应用技术体系的结合有利于林业生态工程管理建设,提升了中国森林资源调查与监测技术水平。

Monitoring forestry ecological projects is vital as a fundamental task of forestry management and ecological construction. To supervise project application and adjust forestry policies, a research area in Yunyang County in Chongqing was selected as a demonstration area based on available high-resolution data, forest resource inventory data, and basic geographic data. Through feature extraction of remote sensing images, the Otsu threshold segmentation method, and object-oriented classification, research was conducted on an algorithm of reforestation site identification, forest extraction, and forest type isolation for forestry ecological projects. Results showed a high-resolution remote sensing application technology system which satisfied the operational requirements of dynamically monitoring forestry ecological projects. The system integrated data management, afforestation checks, dynamic forest resources monitoring, and forestry-related products to produce a demonstration system. The combination of high resolution satellite image and remote sensing application technology was sufficient for management and construction of forestry ecological projects and could improve the technological level for examining and monitoring national forestry resources.