| 集水区径流资源空间变化的模拟与分析 |
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| 引用本文： | 梁天刚,沈正虎.集水区径流资源空间变化的模拟与分析[J].兰州大学学报(自然科学版),1999,35(4):83-89. |
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| 作者姓名： | 梁天刚 沈正虎 |
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| 作者单位： | 兰州大学干旱农业生态国家重点实验室!甘肃兰州730000 |
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| 基金项目： | 国家水利部资助!（ 黄规计［1995］168 号），农业部资助!（农技发［1995］50 号） |
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| 摘 要： | 利用高泉沟流域１９８８－１９９５年８年３１个观测小区定位观测的６３次流资料，模拟出了基于ＧＩＳ栅格系统的小区降雨－产综合模型；采用ＡＲＣ／ＩＮＦＯ系统，建立了研究区栅格ＤＭＥ、多年平均降水因子等空间数据库；提出了一种新的基于ＧＩＳ栅格系统的计算集水区总产流量的反演算法，模拟同泉沟流域径流资源的时空变异规律。
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| 关 键 词： | 径流资源 产流模型 地理信息系统 集水农业 模拟 |
Simulation and Analysis of the Spatial Changes of Runoff Resources in a Catchment |
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| Liang Tiangang,Shen Zhenghu,Dai Ruolan,Xu Yuqing.Simulation and Analysis of the Spatial Changes of Runoff Resources in a Catchment[J].Journal of Lanzhou University(Natural Science),1999,35(4):83-89. |
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| Authors: | Liang Tiangang Shen Zhenghu Dai Ruolan Xu Yuqing |
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| Abstract: | By using the runoff and rainfall data observed in 31 sub areas in Gaoquan catchment from 1988 to 1995,a series of sub area rainfall runoff models based on GIS were simulated. The spatial databases concerned with digital elevation model, average annual rainfall, and etc. were established, and a new deductive model, based on GIS and the calculation of the total average annual runoff of Gaoquan catchment, was put out. The mechanisms of runoff resource changes in space and time were analyzed and modelled. Results indicated that the projection area, slope, effective rainfall and total rainfall, as well as soil and vegetation types are major factors affecting runoff in a sub area. The key to establish runoff deductive model in a catchment is to define reasonably the sub area rainfall runoff model and the detaining coefficient, and the precision of the deductive model is mainly dependent on the reliabilities of sub area rainfall runoff model and detaining coefficient. |
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| Keywords: | runoff resource runoff model geographic information system rain collecting agriculture |
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