基于DEM的不同地貌类型区小流域划分及分布特征研究——以贵州省赤水河流域为例

发布时间：2018-04-12 12:16

本文选题：赤水河流域 + DEM　；参考：《测绘通报》2017年09期

【摘要】：小流域已经成为水土流失治理、生态系统修复等研究工作的重要地理单元。本文以贵州省赤水河流域为研究对象,探索我国西南典型喀斯特与非喀斯特地貌混合分布区小流域划分方法及小流域分布特征,基于DEM提取小流域边界,利用1∶5万地形图进行修正,并结合野外调查和地质、水文数据验证,最终将贵州省赤水河流域划定了753个小流域。其中,喀斯特地貌区小流域个数358个,喀斯特+非喀斯特地貌区小流域个数182个,非喀斯特地貌区213个;就不同流域类型小流域划分结果看,完整型小流域530个,区间型小流域180个,坡面型小流域43个;这些小流域中面积小于3 km2的有9个,面积在3~10 km2的有310个,面积在10~30 km2的有348个,面积在30~50 km2的有86个。贵州省赤水河流域小流域划分研究可为小流域治理工作提供依据,为区域制定水土保持方案和生态建设措施提供辅助决策,促进喀斯特地区水土保持与生态环境建设。
[Abstract]:Small watershed has become an important geographical unit in soil erosion management and ecosystem restoration.Taking the Chishui River Basin of Guizhou Province as the research object, this paper probes into the method of dividing the small watershed and the distribution characteristics of the small watershed in the typical karst and non-karst geomorphologic distribution area in southwest China, and extracts the small watershed boundary based on DEM.By using 1: 50 000 topographic map and combined with field survey geological and hydrological data verification 753 small river basins in Chishui River Basin of Guizhou Province were determined.Among them, there are 358 small watersheds in karst landforms, 182 in karst non-karst landforms and 213 in non-karst landforms.Among them, there are 9 with an area of less than 3 km2, 310 with an area of 3 ~ 10 km2, 348 with an area of 10 ~ 30 km2 and 86 with an area of 30 ~ 50 km2.The study on the division of small watershed in Chishui River Basin of Guizhou Province can provide basis for small watershed management, provide auxiliary decision for formulating soil and water conservation scheme and ecological construction measures in the region, and promote soil and water conservation and ecological environment construction in karst area.
【作者单位】：贵州省第三测绘院;贵州师范大学地理与环境科学学院;
【基金】：国家自然科学基金(41361091)
【分类号】：P208;P332;S157

【相似文献】