遥感自动解译技术在饮用水源保护区环境监测中的应用

Application of Remote Sensing Automatic Interpretation Technology in Environmental Monitoring of Drinking Water Source Protection Area

近年来,随着人类活动范围扩大以及人类活动日益频繁,饮用水源地的生态环境受到人类活动影响,对饮用水源地生态环境保护任务越来越艰巨。文章以遥感自动解译技术为基础,研究适合某饮用水源保护区的自动解译模型,提取饮用水源保护区的土地覆被信息,可用于分析土地覆被变化情况和动态变化趋势,为饮用水源保护区环境保护、管理和生态恢复提供科学的决策依据。利用监督分类和面向对象分类两种方法分别对饮用水源保护区遥感影像进行自动解译,并对比分析两种方法得到的土地覆被分类结果,最终得出的结论是面向对象分类的精度更高,且面向对象分类结果更利于进行变化监测,也与GIS分析有更好的兼容性。

In recent years,with the expansion and the increasing frequency of human activities,the ecological environment of drinking water sources has been affected by human activities,and the task of prical environment of drinking water sources has become increasingly arduous.Based on remote sensing automatic interpretation technology,this paper studies an automatic interpretation model suitable for a drinking water source protection area.Extracting the land cover information of drinking water source protection area can be used to analyze the land cover change and dynamic change trend,and provide scientific decision-making basis for environmental protection,management and ecological restoration of drinking water source protection area.Then,two methods,supervised classification and object-oriented classification,are studied to automatically interpret the remote sensing images of drinking water source protection area,and the land cover classification results obtained by the two methods are compared and analyzed.Finally,the conclusion is that the object-oriented classification accuracy is higher,and the object-oriented classification results are more conducive to change monitoring and better compatible with GIS analysis.