遥感与GIS相结合的森林资源信息更新与制图方法研究

目前我国实行的森林经营单位水平上森林资源动态监测主要是通过森林资源规划设计调查 (简称二类调查 )来实现。重点是对森林资源动态、林业经营效果和森林资源监测的综合评价。通常 ,二类调查每 1 0 a复查 1次 ,这种方法所得到的森林资源调查结果可落实到地块 ,也是森林经营单位进行营林生产的重要基础数据 [1 ] 。但是这种常规调查方法也有许多不足之处 ,如 :(1 )复查间隔期长 ,无法及时满足森林经营单位对森林资源变化信息的需求 ;(2 )调查成果多是以报表、文字的形式提交 ,只能建立属性数据库 ,森林资源的空间信息较少通过计算机实现可视…

Integration of Remote Sensing and GIS Based on Forest Resource Information Updating and Mapping

Forest resource is often changed by the influence of human activities and natural damages. It is important to detect those change in time for forestry management planning. In China, the traditional way to obtain the change information of forest resource is carried out by means of "forest resource inventory and planning". There are several disadvantage within this means, for example, the period of re inventory is longer, the quality of sub compartment distribution map is poor, etc.. So we tried to find a good way to detect the forest resource change and to get finely result in order to update the forest data in time. In this paper, we introduced the study on detecting the forest resource change information and forest mapping using remote sensing and GIS techniques combined the conventionality way. First, the forest change area were identified from TM image and created a new sub compartment boundary map, then updating the old sub compartment boundary map using this new map. Second, updating the attribution database according to the sub compartment level field inventory data and the new sub compartment boundary map. Finally some comparison were made between the result of monitoring and the local field data, the accuracy is good. The study results showed this paper can be used as a working plan for further forest GIS development, where remote sensing is also utilized as a part of forest resource information management system.