| 引用本文: | 阳扬,翟禄新,贾艳红,等.概念水文模型在漓江流域的适用性研究[J].灌溉排水学报,2022,(12):-. |
| YANG Yang,ZHAI Lu-xin,JIA Yan-hong,et al.概念水文模型在漓江流域的适用性研究[J].灌溉排水学报,2022,(12):-. |
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| 摘要: |
| 【目的】水文模型是流域水文过程的数学抽象和概化，不同模型能否精确反映流域的降水径流特征，取决于模型与流域的匹配程度。【方法】为研究不同模型在漓江流域的适用情况，本文选用45个概念性水文模型模拟漓江流域2008—2016年日径流量，从模型的结构特征、蒸散发以及产汇流计算等方面对模型进行比较分析，以揭示模型在流域适用性的主要影响因素。【结果】MODHYDROLOG模型作为漓江流域及相似流域水文模拟的最优选择，GR4J、IHACRES和Hillslope等模型也作为推荐模型。同时，径流模拟精度低的模型在模拟实际蒸散发和径流成分等方面存在明显偏差，其中实际蒸散发的模拟不是径流模拟精度的决定性因素，而径流成分的划分则是影响模型适用性的关键因素。此外，概化处理后的半分布式模型简化了运算过程的同时也会一定程度上影响模拟精度。【结论】MODHYDROLOG、GR4J、IHACRES和Hillslope等模型作为漓江流域及相似流域水文模拟的推荐模型。 |
| 关键词: 水文学；模型；适用性；流域 |
| DOI： |
| 分类号:TV11；P343.9 |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| Applicability of conceptual hydrological model in Lijiang River Basin |
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YANG Yang, ZHAI Lu-xin, JIA Yan-hong, XUE Kai-yuan
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School of Environment and Resources,Guangxi Normal University
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| Abstract: |
| 【Background】Hydrological phenomenon is a very complex physical phenomenon. It is not only affected by the temporal and spatial distribution characteristics of rainfall, but also affected by the underlying surface of the basin, human activities and other factors. Therefore, hydrologists have been exploring and studying for many years in order to reveal hydrological phenomena and their development and change laws. However, there are still many unsolved problems. Before fully understanding the hydrological law, hydrologists always try to simulate the hydrological process by establishing a model. The study of watershed hydrological model provides people with an important tool and method for scientific understanding and rational utilization of water resources, and provides an important scientific basis for water resources management and decision-making. The conceptual watershed hydrological model is simulated based on the physical concept of hydrological phenomena. What it simulates is not entirely a real physical entity, but a certain degree of generalization of the process of runoff and confluence. It is relatively simple in practical application and has the characteristics of low cost, high efficiency and strong operability. Therefore, whether in scientific research or production practice, Have been widely used. Conceptual watershed hydrological model is the main tool of flood forecasting and a very important non engineering measure to reduce flood losses. It can provide scientific decision-making basis for major decision-making issues such as flood control, drought resistance and water resources utilization. In addition, watershed hydrological models are also playing a more and more important role in the research fields of eco-environmental protection, agricultural irrigation, soil and water loss, the impact of global climate change and so on. 【Objective】Hydrological model is the mathematical abstraction and generalization of watershed hydrological process. Whether different models can accurately reflect the precipitation and runoff characteristics of the watershed depends on the matching degree between the model and the watershed. 【Method】In order to study the applicability of different models in the Lijiang River Basin, we selected 45 conceptual hydrological models to simulate the daily runoff of the Lijiang River Basin from 2008 to 2016, and compared and analyzed models from the aspects of model structural characteristics, evapotranspiration and runoff, so as to reveal the main influencing factors of model applicability in the basin. 【Result】MODHYDROLOG model is the best choice for hydrological simulation of Lijiang River Basin and similar basins, and GR4J, IHACRES and Hillslope models are also recommended. At the same time, the model with low runoff simulation accuracy had obvious deviation in simulating the actual evapotranspiration and runoff components. The simulation of actual evapotranspiration was not the decisive factor of runoff simulation accuracy, and the division of runoff components was the key factor affecting the applicability of the model. In addition, the generalized semi distributed model not only simplified the operation process, but also affected the simulation accuracy to a certain extent. 【Conclusion】MODHYDROLOG, GR4J, IHACRES and Hillslope are recommended models for hydrological simulation of Lijiang River Basin and similar basins. |
| Key words: Hydrology; Models; Applicability; Basin |
