青海省生态环境分区的遥感应用研究

地处青藏高原东北部的青海省，地形地势独特，生态环境多样。但由于地域辽阔，环境条件恶劣等原因使得对其生态环境总体现状特征了解甚少。笔者利用多时像、多元遥感数据，在计算机图像处理系统支持下，通过不同图像处理方法实验，优选使用了美国Landsat-5TM7.4.1图像提取了反映生态环境综合特征的遥感因子，参考过渡因子以及非遥感因子特征，对青海省生态环境进行了遥感分区，共划分出2个生态环境大区，7个亚区和31个小区。通过这一生态环境分区性遥感应用研究，不仅对青海省生态环境现状有了宏观性的了解，而且还达到了对应用中的相关技术方法进行了讨论的目的。

Applications of the remote sensing technique in eco-environmental division in Qinghai Province

Qinghai Province is located in the northeastern Qinghai-Tibet Plateau.It i s characterized by unique relief and highly varied eco-environments.However,owin g to the vast expanse of the province and harsh envi-ronmental conditions,the present general features of the eco-environment of the province are little understood.The authors used multi-time-image data and mu ltivariate remote data for image processing methods,and sup-ported by the computer image processing system and through experiments with different image processing meth-ods,they selected the U.S.Landsat-5TM7.4.1images for extracting remote sensi ng factors that reflect the inte-grated features of eco-environment;by referring to the features of the trans itional factor and non-remote sensing factors,the authors made eco-environmental division in Qinghai.The whole province is divided into two eco-environmental re gions,seven eco-environmental subregions and31districts.Through this study,the a uthors have got a macroscopic understanding of the present state of the eco-envi ronment in Qinghai and also reached the aim of discussing the relevant technique s used in the application.