Estimation of Surface Runoff and Pollution Load in the Coastal Region of Qinghuangdao
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Abstract:
Based on the land use, soil classification, and hydrological and meteorological data, the SCS model, developed by Soil Conservation Service (SCS), U.S.A., was applied to simulate the annual runoff depth and surface runoff under different frequencies in the platform of ArcGIS in the coastal region of Qinghuangdao and to determine the appropriate value of CN in the area. The results showed that the runoff depths were 194.21mm, 145.64mm, and 126.08mm during the wet, normal, and dry seasons, which can accurately reflect the actual rainfall-runoff relationship in the study area. Meanwhile, the surface runoff results were used to estimate the pollution loads under different runoff conditions in the coastal region of Qinghuangdao, which can provide reference for the simulation of spatial and temporal distribution of non-point source pollution and evaluation of environmental improvement in Beidaihe area of Qinghuangdao.
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