Analysis of Temporal Change in Soil Erosion Potential at Haean-myeon Watershed Due to Climate Change

초록

Climate change has been social and environmental issues, it typically indicates the trend changes of not onlytemperature but also rainfall. There is a need to consider climate changes in a long-term soil erosion estimationsince soil loss in a watershed can be varied by the changes of rainfall intensity and frequency of torrentialrainfall. The impacts of rainfall trend changes on soil loss, one of climate changes, were estimated usingSediment Assessment Tool for Effective Erosion Control (SATEEC) employing L module with currentclimate scenario and future climate scenario collected from the Korea Meteorological Administration. A 62km2 watershed was selected to explore the climate changes on soil loss. SATEEC provided an increasing trendof soil loss with the climate change scenarios, which were 182 ton/ha/year in 2010s, 169 ton/ha/year in 2020s,192 ton/ha/year in 2030s,182 ton/ha/year in 2040s, and 218 ton/ha/year in 2050s. Moreover, it was found thatapproximately 90% of agricultural area in the watershed displayed the soil loss of 50 ton/ha/year which isexceeding the allow able soil loss regulation by the Ministry of Environment.

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