| 基于数字高程模型的流域地貌特征提取及其规律研究 |
| |
| 引用本文： | 叶金印,姚成,李京兵,李致家.基于数字高程模型的流域地貌特征提取及其规律研究[J].水电能源科学,2012,30(9):63-65,84. |
| |
| 作者姓名： | 叶金印 姚成 李京兵 李致家 |
| |
| 作者单位： | 河海大学 水文水资源学院， 江苏 南京 210098； 2. 淮河流域气象中心， 安徽 蚌埠 233040;河海大学 水文水资源学院， 江苏 南京 210098;安徽省水文局， 安徽 合肥 230022;河海大学 水文水资源学院， 江苏 南京 210098 |
| |
| 基金项目： | 国家自然科学基金资助项目(41101017，41130639，51179045)；中央高校基本科研业务费专项资金资助项目(2010B00114)；淮河流域气象开放研究基金资助项目(HRM201002，HRM201103)；公益性行业（气象）科研专项基金资助项目（GYHY200906007，GYHY201006037） |
| |
| 摘 要： | 流域的地形地貌特征对流域水文响应具有重要影响,是水文学研究中必须考虑的因素。基于数字高程模型,对皖南山区内36个流域进行了数字化,提取了流域地貌特征信息,并对其规律进行了分析。结果表明,皖南山区流域的面积坡度、河道平均坡度与流域面积成反比关系,主河道长与流域面积成正比关系,且均可建立较好的幂函数关系,由此建立了流域面积坡度与河网蓄水消退系数的定量关系。同时,生成了流域地形指数分布曲线与地貌瞬时单位线,为皖南山区无资料流域的水文模型研究奠定了基础。
|
| 关 键 词： | 数字高程模型 地貌特征 水文响应 无资料流域 |
Extraction and Analysis of Topographic Attributes of Watershed Based on DEM |
| |
| YE Jinyin,YAO Cheng,LI Jingbing and LI Zhijia.Extraction and Analysis of Topographic Attributes of Watershed Based on DEM[J].International Journal Hydroelectric Energy,2012,30(9):63-65,84. |
| |
| Authors: | YE Jinyin YAO Cheng LI Jingbing and LI Zhijia |
| |
| Affiliation: | College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China; 2. Huaihe River Basin Meteorological Center, Bengbu 233040, China;College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China;Hydrology Bureau of Anhui Province, Hefei 230022, China;College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China |
| |
| Abstract: | The topographic attributes of watersheds, which are necessary to be considered in the hydrology study, have a significant effect on the hydrological response. Based on the digital elevation model (DEM), the 36 watersheds located in the southern mountainous area of Anhui Province are digitized. Meanwhile, their topographic attributes are exacted and analyzed. The results show that both the watershed and channel slopes have an inverse relationship with drainage area while the main stream length is direct proportion to drainage area; the reasonable power functions can be obtained from the analysis. The quantitative relationship between the watershed slope and the recession coefficient of river network is established for the study area. The distribution curve of topography index and the geomorphologic instantaneous unit hydrograph are also generated, which is helpful to study the hydrological models applied to ungauged regions in the southern mountain area of Anhui Province. |
| |
| Keywords: | DEM topographic attributes hydrological response ungauged basins |
| 本文献已被 CNKI 等数据库收录！ |
|
