Impacts of precipitation and topographic conditions on the model simulation in the north of China
The evaluation of hydrological models for a specific catchment is normally based on the model performance according to the selected performance criteria. However, the catchment rainfall-runoff characteristics could be used for the selection of a suitable hydrological model in study area, which, also...
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IWA Publishing
2021
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oai:doaj.org-article:f95542860c014695a91072b369b56dba2021-11-06T07:12:10ZImpacts of precipitation and topographic conditions on the model simulation in the north of China1606-97491607-079810.2166/ws.2020.284https://doaj.org/article/f95542860c014695a91072b369b56dba2021-05-01T00:00:00Zhttp://ws.iwaponline.com/content/21/3/1025https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798The evaluation of hydrological models for a specific catchment is normally based on the model performance according to the selected performance criteria. However, the catchment rainfall-runoff characteristics could be used for the selection of a suitable hydrological model in study area, which, also, for the problem solve of the model application in ungauged basins. In this study, six conceptual models were applied in three semi-humid or semi-arid catchments to investigate the correlation between catchment characteristics and model structure selection. In addition, the impacts of precipitation and topography in model simulation were analyzed. The results show that runoff generation are highly impacted by catchment topographic index and land cover change, and the influence of slope for river channel is greater than mean slope for the whole catchment due to the runoff generation for partial area. For the catchments under similar climate condition, the impact of topographic features for runoff generation process is greater than the difference of precipitation. It indicates that for a specific catchment, the selection of appropriate model should base on better understanding of the rainfall-runoff relationship. The method of incorporating additional runoff generation module in the traditional model can significantly improve the accuracy of flood simulation. HIGHLIGHTS Six conceptual models were applied in three semi-humid or semi-arid catchments.; The model obviously led to better model performance.; Runoff generation and production process are highly influenced by catchment topographic index.; The influence of slope for river channel is greater than mean slope.; The saturation-excess and infiltration-excess runoff mechanism.;Long SunZhijia LiKe ZhangTingting JiangIWA Publishingarticleflood forecastinginfiltration-excess runoffsemi-humid or semi-arid regiontopographic characteristicsWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 3, Pp 1025-1035 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
flood forecasting infiltration-excess runoff semi-humid or semi-arid region topographic characteristics Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 |
| spellingShingle |
flood forecasting infiltration-excess runoff semi-humid or semi-arid region topographic characteristics Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Long Sun Zhijia Li Ke Zhang Tingting Jiang Impacts of precipitation and topographic conditions on the model simulation in the north of China |
| description |
The evaluation of hydrological models for a specific catchment is normally based on the model performance according to the selected performance criteria. However, the catchment rainfall-runoff characteristics could be used for the selection of a suitable hydrological model in study area, which, also, for the problem solve of the model application in ungauged basins. In this study, six conceptual models were applied in three semi-humid or semi-arid catchments to investigate the correlation between catchment characteristics and model structure selection. In addition, the impacts of precipitation and topography in model simulation were analyzed. The results show that runoff generation are highly impacted by catchment topographic index and land cover change, and the influence of slope for river channel is greater than mean slope for the whole catchment due to the runoff generation for partial area. For the catchments under similar climate condition, the impact of topographic features for runoff generation process is greater than the difference of precipitation. It indicates that for a specific catchment, the selection of appropriate model should base on better understanding of the rainfall-runoff relationship. The method of incorporating additional runoff generation module in the traditional model can significantly improve the accuracy of flood simulation. HIGHLIGHTS
Six conceptual models were applied in three semi-humid or semi-arid catchments.;
The model obviously led to better model performance.;
Runoff generation and production process are highly influenced by catchment topographic index.;
The influence of slope for river channel is greater than mean slope.;
The saturation-excess and infiltration-excess runoff mechanism.; |
| format |
article |
| author |
Long Sun Zhijia Li Ke Zhang Tingting Jiang |
| author_facet |
Long Sun Zhijia Li Ke Zhang Tingting Jiang |
| author_sort |
Long Sun |
| title |
Impacts of precipitation and topographic conditions on the model simulation in the north of China |
| title_short |
Impacts of precipitation and topographic conditions on the model simulation in the north of China |
| title_full |
Impacts of precipitation and topographic conditions on the model simulation in the north of China |
| title_fullStr |
Impacts of precipitation and topographic conditions on the model simulation in the north of China |
| title_full_unstemmed |
Impacts of precipitation and topographic conditions on the model simulation in the north of China |
| title_sort |
impacts of precipitation and topographic conditions on the model simulation in the north of china |
| publisher |
IWA Publishing |
| publishDate |
2021 |
| url |
https://doaj.org/article/f95542860c014695a91072b369b56dba |
| work_keys_str_mv |
AT longsun impactsofprecipitationandtopographicconditionsonthemodelsimulationinthenorthofchina AT zhijiali impactsofprecipitationandtopographicconditionsonthemodelsimulationinthenorthofchina AT kezhang impactsofprecipitationandtopographicconditionsonthemodelsimulationinthenorthofchina AT tingtingjiang impactsofprecipitationandtopographicconditionsonthemodelsimulationinthenorthofchina |
| _version_ |
1718443832324915200 |