基于LANDSAT TM数据的湖北省水体面积变化检测

The Change Detection of Water Area in Hubei Province Based on Landsat TM Data

水体是万物生长之源,是社会经济可持续发展之根本。湖北省素有“千湖之省”的美誉,但随着社会经济的发展,近几十年来,水体资源的储量和开发利用环境发生了很大变化。TM影像具有一定的空间分辨率和定位精度、且有较高的波谱分辨率和极为丰富的信息量。本文通过多年的TM影像,主要运用多波段组合法提取各年的水体,从而检测湖北省水体面积的变化,完成湖北省不同年份水体面积统计分析,结果表明所述方法对于研究一定时期的水体变化是可行的。

Water is the source of all the growing things;it is also the foundation of social and economic sus-tainable development. Hubei province is known as the “province of thousands of lakes”, but with the development of social economy, in recent decades, the reserves of water resources and the development and utilization of water environment have changed a lot. TM images have certain spatial resolution and positioning accuracy, high spectral resolution and extremely rich amount of information. Through years of TM images, the paper combines multiple bands to extract water in each year in order to detect the change of the water area of Hubei province and to complete the statistical analysis of water area of Hubei province in different years. The results show that the above method is practicable for studying the period change of water area.