利用卫星影像编制吉林省植被类型图(1∶50万)

COMPILATION OF"VEGETATION TYPE MAP OF JILIN PROVINCE(1:50,000)"USING LANDSAT IMAGES

《吉林省植被类型图(1:50万)》是《中国植被图(1:100万)》的一部分。在编制过程中采用遥感手段,节省了时间和资金,较新的 TM 影像具有比 MSS 影像更高的地面分辩率,在卫片解译中采用多时相分析,多因子分析,影像的多时相分析,对照分析法和制图综合。根据解译结果,提出了吉林省植被分类系统,划分出60个群系,总计72个成图符号。

'Vegetation TypeMap of Jilin Province(1:500,000)'is a part of 'Vegetation Map of China(1:1000,000)'.Much expense and time were saved with the aid of Landsat images.The images of TM have higher spectral and geometric resolution than MSS,which increases the preci sion of image interpretation.According to the vegetation features of Jilin Province,the following four methods for interpreting the images were used:1)the multitemporal analysis of images;2)the analysis of related environmental factors;3)the synthetic analysis of images;and 4)the comparison of adjacent images and cartographic generalization. On the basis of the image interpretation result,the authors built the vegetation classification system,and divided the vegetation of Jilin into 60 formations and 72 mapping units.