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首页> 外文会议>Education Technology and Training, 2008. and 2008 International Workshop on Geoscience and Remote Sensing. ETT and GRS 2008 >The Impact of Land Use Change on Hydrological Cycle at a Semiarid Headwater Catchment in North China
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The Impact of Land Use Change on Hydrological Cycle at a Semiarid Headwater Catchment in North China

机译：华北半干旱水源地土地利用变化对水文循环的影响

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摘要

To obtain accurately and timely the land-surface changing information is very important for describing the nature and extent of land resources. And the impact of land use changes on the hydrological system behavior of watershed is of major interest to water resources management. Particularly in semi-arid areas, where water resource is strongly shortened, the impact of land use changes on the hydrological cycle is more obvious and more serious. To investigate such effect quantitatively, Land sat TM (1987), ETM data (2001) are used for mapping the land use and land cover changing within the semi-arid Shalamulun River catchment located at the southeast parts of Inner Mongolia of China in this paper. The decision tree method is used to detect the land use classes. And the classification results are compared with the land use classification map of 1996. Based on the observed precipitation and discharge data from 1987 to 2007, the hydrological responses to land use change are analyzed quantitatively by investigating the relationship between land use changes and the runoff. The research results show that the changes of grass land, forest, barren land and crop land area are the most important factors to affect the runoff in this study area.
机译：准确及时地获取地表变化信息对于描述土地资源的性质和程度非常重要。土地利用变化对流域水文系统行为的影响，对水资源管理具有重要意义。特别是在水资源严重短缺的半干旱地区，土地利用变化对水文循环的影响更加明显和严重。为了定量研究这种影响，本文使用Land sat TM（1987），ETM数据（2001）绘制了位于中国内蒙古东南部的半干旱沙拉木伦河流域内的土地利用和土地覆盖变化的图。 。决策树方法用于检测土地利用类别。并将分类结果与1996年的土地利用分类图进行比较。基于1987年至2007年的降水量和流量数据，通过调查土地利用变化与径流量之间的关系，定量分析了对土地利用变化的水文响应。研究结果表明，草地，森林，荒地和耕地面积的变化是影响本研究区径流的最重要因素。

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