这研究试图用用手的优化和平均参数值在 Hydrologiska Byråns Vattenbalansavedlning (HBV ) 模型,以及刻度性能的优化上调查时间的可变性的效果。由把 HBV 模型,其地质的特征包括大量裂缝和差距用于 Jiangwan 集水,在各种各样的计划下面的模拟被开发:短、中等长度、长时间的刻度。与长时间的刻度,客观功能 Nash-Sutcliffe 效率系数(NSE ) 珍视的结果表演,相对错误(RE ) ,根均方差(RMSE ) ,和高度流动比率通常交付更好的模拟。尽管 NSE 和 RMSE 与不同时间的规模是相对稳定的,到 RE 和高流动比率的重要改进与更长时间的刻度被看见。平均参数值的使用不与用手的优化相比导致更好的模拟结果,这也被注意。与中等长度的时间的刻度,用手的优化交付最好的模拟结果,与 NSE, RE, RMSE,和是的高流动比率 0.563 ; 6, 0.122 ; 3, 0.978 ; 8,和 0.854 ; 7 分别地;并且用平均参数价值的刻度交付 NSE, RE, RMSE,和 0.481 的高流动比率; 1, 0.467 ; 6, 1.021 ; 0,和 2.784 ; 0 分别地。当 NSE , RE , RMSE ,和用用手的优化的高流动比率是 0.525 时,类似的行为与长时间的刻度被发现; 3 , −0.069 ; 2 , 1.058 ; 0 ,和 0.980 ; 0 ,分别地作为与 0.490 相比; 3 , 0.224 ; 8 , 1.096 ; 2 ,和 0.547 ; 9 分别地,使用的平均参数值。这研究证明在水文学分析的时间的刻度的更长的时期的那种选择为水平衡分析一般来说交付更好的模拟。
This study aimed to investigate the effects of temporal variability on the optimization of the Hydrologiska ByrS.ns Vattenbalansavedlning (HBV) model, as well as the calibration performance using manual optimization and average parameter values. By applying the HBV model to the Jiangwan Catchment, whose geological features include lots of cracks and gaps, simulations under various schemes were developed: short, medium-length, and long temporal calibrations. The results show that, with long temporal calibration, the objective function values of the Nash- Sutcliffe efficiency coefficient (NSE), relative error (RE), root mean square error (RMSE), and high flow ratio generally deliver a preferable simulation. Although NSE and RMSE are relatively stable with different temporal scales, significant improvements to RE and the high flow ratio are seen with longer temporal calibration. It is also noted that use of average parameter values does not lead to better simulation results compared with manual optimization. With medium-length temporal calibration, manual optimization delivers the best simulation results, with NSE, RE, RMSE, and the high flow ratio being 0.563 6, 0.122 3, 0.978 8, and 0.854 7, respectively; and calibration using average parameter values delivers NSE, RE, RMSE, and the high flow ratio of 0.481 1, 0.467 6, 1.021 0, and 2.784 0, respectively. Similar behavior is found with long temporal calibration, when NSE, RE, RMSE, and the high flow ratio using manual optimization are 0.525 3, -0.069 2, 1.058 0, and 0.980 0, respectively, as compared with 0.490 3, 0.224 8, 1.096 2, and 0.547 9, respectively, using average parameter values. This study shows that selection of longer periods of temooral calibration in hvdrolouical analysis delivers better simulation in general for water balance analysis.