摘要
以长春市石头口门水库汇水流域为例,在亚流域划分数量不同的情况下,应用SWAT模型模拟流域内径流与泥沙负荷,分析了亚流域划分数量对其模拟结果的影响。结果表明,亚流域划分数量过少或过多时模拟结果与实际情况有偏差,而在划分阈值波动范围内径流对划分数量敏感性低,泥沙负荷相对较高,进而确定研究区流域内合理的亚流域划分数量,为该区进行非点源污染模拟提供了理论参考。
It is simulated the runoff and sediment load in the condition of the different sub-watershed by the SWAT model and analyzed the relationship between the numbers of sub-watershed and the response of the simulation results by studying Shitoukoumen Reservior catchment basin area.It is revealed that when the sub-watershed is divided into too small or too large,the actual threshold is unable to get the satisfactory simulation results.The sensitivity of runoff is low but the sediment load is relatively high within the threshold fluctuation range.Finally,it is confirmed that the reasonable numbers of watershed sub-basins in this area is determined,which can provide a theoretical reference for the non-point source pollution simulation of this area in the future.
出处
《水电能源科学》
北大核心
2010年第10期23-25,共3页
Water Resources and Power
基金
国家自然科学基金资助项目(40672157)
吉林大学研究生创新基金资助项目(20101060)
