3S集成技术在森林资源调查中的应用

Application of 3S technology in inventory survey of forest

森林资源调查是建立或更新森林经营方案、制定森林采伐限额、进行林业工程规划设计和森林资源管理的基础,也是制定区域国民经济发展规划和林业发展规划、实行森林生态效益补偿和森林资源资产化管理、指导和规范森林科学经营的重要依据。近年来,以微电脑为基础的3S(RS、GIS、GPS)集成技术进行的高精度面积测量和GIS自动成图,为提高面积测量精度和不同地类准确定位提供了重要技术保障。星源通掌上森林资源调查仪是以3S集成技术为基础研制的森林资源调查仪器,为检验其测量精度,在汪清林业局不同林地选择地形明显、最易勾绘的10个小班进行精度检验,小班的勾绘面积最小为1.34 hm2,最大为35.80 m2。结果表明,测量精度最低为98.0%,最高为99.2%,平均为98.71%;星源通掌上森林资源调查仪可广泛应用于森林资源调查、伐区调查设计、造林地验收、林火损失评估、征占用林地调查等多个方面。

The forest resources survey is the foundation to making the management scheme of forest establishment and regeneration, forest harvest limits, design of forestry project, and the management of forest resources, and is also an important guidance for setting up blueprint of the regional economic development and forestry development, carrying out the compensation of ecological benefits in forest and the management of forest resources, guiding and regulating a scientifie forest management. In recent years, the 3S （RS, GIS, GPS） integrated technology based on computer, which, could give high precision measurement of area and GIS automated mapping, have provided an important technical support for improving the accuracy of area measurement and orientation of various land types. The Xing- yuan-tong handy apparatus for inventory survey of forest, was supported by the 3S integrated technology. To test the precision, the experiments were conducted in 10 subcompartments belonged to Wangqing Forestry Bureau. The minimum subcompartment among of them was 1.34 hm^2 and the maximum was 35.8 hm^2 . Results showed that the precisions varied at 98.0% to 99.2%, with 98.7% on avernge.It could be applied in inventory survey and design, planting land inspection assessment of forest fire loss and survey ,coupe inventory occupied forest land.