| 宁南山区雨水集蓄利用模式与技术集成研究 |
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| 引用本文： | 刘学军,刘平,徐志友. 宁南山区雨水集蓄利用模式与技术集成研究[J]. 水土保持通报, 2004, 24(1): 36-39 |
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| 作者姓名： | 刘学军 刘平 徐志友 |
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| 作者单位： | 1. 北京师范大学,环境科学研究所,环境模拟与污染控制国家重点联合实验室,北京,100875
2. 黄河水利委员会水文局,河南,郑州,450003 |
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| 基金项目： | 国家重点基础研究发展规划(973)项目(G1999043605)，教育部博士点基金资助项目(20010027013) |
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| 摘 要： | 在GIS技术的支持下应用SCS模型，以黄河下游支流洛河卢氏水文站以上流域为研究区，基于1：250000DEM和1：1000000DEM对1992—2000年的流域径流量进行了模拟，研究了径流模拟对DEM分辨率的敏感性，结果表明1：250000DEM的模拟值比1：1000000DEM为高。由不同分辨率的DEM得到流域面积、河网结构、高程等空间参数相差较小，而坡度相关的变化较大。根据SCS模型敏感参数Cn，从坡度参数变化角度分析了不同分辨率的DEM对流域径流量影响。
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| 关 键 词： | DEM 水平分辨率 SCS模型 径流 |
| 文章编号： | 1000-288X(2004)01-0032-04 |
| 收稿时间： | 2003-04-26 |
| 修稿时间： | 2003-08-12 |
Integrated Model of Rainwater Harvesting and Use Technology in Southern Ningxia Hui Autonomous Region |
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| LIU Xue-jun,LIU Ping and XU Zhi-you. Integrated Model of Rainwater Harvesting and Use Technology in Southern Ningxia Hui Autonomous Region[J]. Bulletin of Soil and Water Conservation, 2004, 24(1): 36-39 |
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| Authors: | LIU Xue-jun LIU Ping XU Zhi-you |
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| Affiliation: | Ningxia Institute of Water Conservancy Science, Yinchuan 750021m Ningxia Hut Autonomous Region, China;Ningxia Institute of Water Conservancy Science, Yinchuan 750021m Ningxia Hut Autonomous Region, China;Ningxia Institute of Water Conservancy Science, Yinchuan 750021m Ningxia Hut Autonomous Region, China |
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| Abstract: | With the support of GIS technology, the SCS (soil conservation service) model was selected to model runoff of the upper watershed of the Luohe River(a tributary of the Yellow River) using a 1 : 250 000 DEM and a 1 : 1 000 000 DEM. By comparison of the simulated annual average runoff yield from 1992 through to 2000, it was found that a higher runoff volume was obtained using the 1 : 250 000 DEM. There are marginal differences in area, elevation, slope, channel length, and drainage network between the DEMs of different resolution, but there is a greater difference in slope change. Through analysis of the sensitive parameter CN of the SCS model, the sensitivity of runoff modeling to DEM resolution is described from the perspective of slope change. |
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| Keywords: | DEM resolution SCS curve number method runoff |
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