地理国情监测中水系特征提取与变化成因分析——以陕西省红碱淖为例

Feature Extraction and Change Cause Analysis of Water System in Geographical Condition Monitoring—— Taking Hongjiannao Lake in Shaanxi Province for Example

随着经济社会的快速发展,人类对其赖以生存的自然环境的影响程度不断加大,耕地、交通、水域等地表覆盖信息也随之发生改变。如何快速、准确地掌握这一系列变化情况,是国内外众多专家、学者竞相关注的热点。榆林地处干旱少雨的陕西北部区域,是我国重要的能源与矿产资源富集区。近年来,人类活动的不断加剧及土地资源的过度开发利用,使得该区域的地表覆盖状况发生了很大变化。以红碱淖地区为例,对不同时期的遥感影像进行处理。结果表明:水域面积呈现持续减少趋势,并对变化结果做了简要的分析。

Along with the rapid development of economy and society ,the effect of humankind on the natural environment is increased uninterruptedly ,and the ground surface information including farmland ,traffic ,waters and so on is changed a lot .So ,how to get the change information fast and accurately becomes a hotspot problem for the researchers at home and abroad .Yulin ,located at the drought and less rain region in the north of Shaanxi ,is an important energy and miner-al resource area .In recent years ,the uninterrupted growing of human activities and the over-exploitation of land resource make the ground surface covering situation in this region change greatly .Here ,taking Hongjiannao Lake for example ,the remote sensing images in different periods are treated .The results show that the water area appears to be decreased con-tinuously ,then ,the change results are analyzed briefly .