Multi-metric calibration of hydrological model to capture overall flow regimes
文献类型：SCI/SSCI论文
| 作者 | Zhang Y. Y.; Shao, Q. X.; Zhang, S. F.; Zhai, X. Y.; She, D. X.; Xu, M; Li, F |
| 发表日期 | 2016 |
| 关键词 | Flow regime characteristics Hydrological model Multi-metric calibration Improved SCE-UA Hexi Corridor rainfall-runoff models automatic calibration global optimization northwest china climate-change river-basin catchment models nsga-ii streamflow uncertainty |
| 英文摘要 | Flow regimes (e.g., magnitude, frequency, variation, duration, timing and rating of change) play a critical role in water supply and flood control, environmental processes, as well as biodiversity and life history patterns in the aquatic ecosystem. The traditional flow magnitude-oriented calibration of hydrological model was usually inadequate to well capture all the characteristics of observed flow regimes. In this study, we simulated multiple flow regime metrics simultaneously by coupling a distributed hydrological model with an equally weighted multi-objective optimization algorithm. Two headwater watersheds in the arid Hexi Corridor were selected for the case study. Sixteen metrics were selected as optimization objectives, which could represent the major characteristics of flow regimes. Model performance was compared with that of the single objective calibration. Results showed that most metrics were better simulated by the multi-objective approach than those of the single objective calibration, especially the low and high flow magnitudes, frequency and variation, duration, maximum flow timing and rating. However, the model performance of middle flow magnitude was not significantly improved because this metric was usually well captured by single objective calibration. The timing of minimum flow was poorly predicted by both the multi-metric and single calibrations due to the uncertainties in model structure and input data. The sensitive parameter values of the hydrological model changed remarkably and the simulated hydrological processes by the multi-metric calibration became more reliable, because more flow characteristics were considered. The study is expected to provide more detailed flow information by hydrological simulation for the integrated water resources management, and to improve the simulation performances of overall flow regimes. (C) 2016 Elsevier B.V. All rights reserved. |
| 出处 | Journal of Hydrology |
| 卷 | 539 |
| 页 | 525-538 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0022-1694 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43924]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_生态网络实验室 |
| 推荐引用方式 GB/T 7714 | Zhang Y. Y.,Shao, Q. X.,Zhang, S. F.,et al. Multi-metric calibration of hydrological model to capture overall flow regimes. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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