Simulation of Effects of LUCC on Flood Evolution in Xixi Watershed, Jinjiang River
This research takes Xixi watershed of Jinjiang River in the south of Fujian province as study area. The HEC-HMS model is built for flood simulation during heavy rain time, based upon which, effects of LUCC on floods process caused by heavy rain are studied. Results show that:1) in the study period, the most obvious characteristics of LUCC in the watershed are the reduction of forest and culti-vated lands, compared to the increase of garden and construction lands. The conversions mainly in-clude woodland to garden, cultivated land to garden, cultivated land to forest land and cultivated land to construction land; 2 ) from 1988 to 2020 , the effects of LUCC on flood process at the export of Xixi basin are mainly the increase of flood discharge and peak flow, but the impact on flood peak lag time and flood confluence time is not significant. And the effects are at the same time influenced by heavy rain intensity, heavy rain type distribution and heavy rain duration.
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万方数据
维普
