用TM资料对祁连山部分地区进行针叶林、灌木林分类研究

Study on Classification between Coniferous Forest and ShrubberyBased on TM Data in the Part of QI Lian Mountainous Area

为了解黑河上游祁连山区水源涵养林十年间的变化状况 ,对这一典型地区采用 TM卫星资料进行了针叶林、灌木林分类。首先对 TM资料进行了几何精纠正和投影变换等预处理 ;再通过选择 TM的 4、3、2波段做假彩色合成 ,并结合遥感地面调查 ,建立了遥感判读解译标志 ;在以上工作的基础上 ,采用一种简单的决策树分类方法 ,成功地对祁连山典型地区的针叶林和灌木林进行了分类 ,并检验了分类结果。

In this paper, in order that the decennary change with riverhead conservation forest of upper reaches of Heihe river in Qi Lian mountainous area could be realized, the classification between coniferous forest and shrubbery based on TM data were achieved in this typical area. First of all, the TM data were preprocessed by geometrical correction and projection transform. Then, the composite color image was created by using 432 channels of TM data. The ground investigation was also achieved. The distinction and interpretation symbol was founded. Based on the result mentioned above, the classification between coniferous forest and shrubbery was successfully achieved in Qi Lian mountainous area by means of decision tree method. At last, the result of classification was verified.