| Hydrological Processes of Storm Runoff from Catchments of Different Land Uses |
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| 作者姓名： | HONG Lin LI Minggang SONG Yuansheng |
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| 作者单位： | State Key Laboratory of Water Resources and Hydropower Engineering Science/School of Water Resources and Hydropower, Wuhan University, Wuhan 430072, Hubei, China |
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| 基金项目： | Supported by the Natural Science Foundation of Hubei Province （2005ABA290）. Acknowledgment： The authors express deep appreciation to Dr. Koichi Sato and Dr. Keiji Takase of Ehime Uni., Japan for their selfless help in the research. |
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| 摘 要： | In this paper, a novel and efficient study on the hydrological processes of storm runoff from catchments of different land uses is conducted. The motivation is to precisely simulate the hydrological processes of storm runoff in the agricultural catchments with different patterns of land uses, i.e., forest, paddy, and upland, respectively. As it is discussed in this paper, different land use leads to different characteristics of storm runoff. In order to understand the changes in the hydrological processes of storm runoff from catchments of different land uses, the effects of rainfall intensity, initial soil moisture deficit, evapotranspiration rate, percolation rate, and retention capacity on hydrological processes of the catchments are taken into consideration. According to the principle of water balance, a general model to connect the separate hydrological processes is developed; then, the individual hydrological process is studied in detail： Firstly, the daily evaporation is calculated according to the relation between the actual evapotranspiration and the potential evapotranspiration rate; Secondly, the retention of storm runoff is plotted against the total rainfall, and the maximum storage is calculated; Thirdly, the percolation rate is calculated for each catchment.
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| 关 键 词： | 土地利用类型 汇流区 暴雨 径流 水文过程 |
| 文章编号： | 1007-1202（2007）02-0317-05 |
| 收稿时间： | 2006-05-09 |
Hydrological processes of storm runoff from catchments of different land uses |
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| HONG Lin LI Minggang SONG Yuansheng.Hydrological Processes of Storm Runoff from Catchments of Different Land Uses[J].Wuhan University Journal of Natural Sciences,2007,12(2):317-321. |
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| Authors: | Hong Lin Li Minggang Song Yuansheng |
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| Institution: | (1) State Key Laboratory of Water Resources and Hydropower Engineering Science/School of Water Resources and Hydropower, Wuhan University, Wuhan, 430072, Hubei, China |
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| Abstract: | In this paper, a novel and efficient study on the hydrological processes of storm runoff from catchments of different land uses is conducted. The motivation is to precisely simulate the hydrological processes of storm runoff in the agricultural catchments with different patterns of land uses, i.e., forest, paddy, and upland, respectively. As it is discussed in this paper, different land use leads to different characteristics of storm runoff. In order to understand the changes in the hydrological processes of storm runoff from catchments of different land uses, the effects of rainfall intensity, initial soil moisture deficit, evapotranspiration rate, percolation rate, and retention capacity on hydrological processes of the catchments are taken into consideration. According to the principle of water balance, a general model to connect the separate hydrological processes is developed; then, the individual hydrological process is studied in detail: Firstly, the daily evaporation is calculated according to the relation between the actual evapotranspiration and the potential evapotranspiration rate; Secondly, the reten-tion of storm runoff is plotted against the total rainfall, and the maximum storage is calculated; Thirdly, the percolation rate is calculated for each catchment. |
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| Keywords: | storm runoff hydrological process catchments different land use |
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