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选取我国南方湿润地区——湖北省漳河灌区桥河流域作为研究对象,并根据1966—2010年土地利用的变化划分为4个阶段.将SCS模型改进后应用于流域的产汇流计算,并分析该流域不同阶段的降雨-径流关系和洪峰流量变化.分析结果表明,在相同频率下,年径流量和洪峰流量随着时间的推移有减少的趋势.这说明了土地利用的变化对流域水文特性具有一定的影响,也说明了加强人类活动影响研究的重要性.
This paper chooses Qiahe River Basin, a wetland in the south of China - Zhanghe Irrigation District in Hubei Province, as the research object and divides it into four stages according to the changes of land use from 1966 to 2010. The SCS model is applied to the calculation of production and sink flow in the basin, The results show that under the same frequency, the annual runoff and peak flow rate decrease with the passage of time, which shows that the change of land use has great impact on the hydrological characteristics Has a certain impact, but also shows the importance of strengthening the research on the impact of human activities.