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利用1980年和1996年土地覆被情景分别表征1964年-1979年和1990年-1999年土地利用情况,运用双源蒸散与混合产流的分布式水文模型探讨老哈河流域太平庄集水区土地覆被变化的水文效应,定量分析土地覆被变化对“绿水”和“蓝水”的影响,结果表明1980年到1996年研究区域土地覆被变化总体趋势为草地向林地和耕地转化,上述土地覆被变化导致老哈河流域截留蒸发量和冠层蒸腾能力增加,土壤蒸发能力减小,进而使得蒸散发能力和实际蒸散发量增加,地表径流、地下径流和径流系数减少。1964年-1979年平均地表径流、地下径流、总径流和径流系数分别减少了4.4%、9.5%、8.7%和8.7%。此外,径流模拟除了受土地覆被变化影响外,同时还受到人类生产活动的影响。
Using the 1980 and 1996 land cover scenarios to characterize the land use of the years 1964-1979 and 1990-1999, respectively, and applying the distributed hydrological model of dual source evapotranspiration and mixed runoff to investigate the water quality of Taipingzhuang catchment The results show that the general trend of land cover change in the study area from 1980 to 1996 is that the change of the grassland to the forest land And the conversion of arable land. The change of land cover resulted in the increase of interception evapotranspiration and canopy transpiration, the decrease of soil evaporation capacity, and the increase of evapotranspiration and actual evapotranspiration. The surface runoff, subsurface flow and runoff coefficient cut back. From 1964 to 1979, average surface runoff, subsurface flow, total runoff and runoff coefficient decreased by 4.4%, 9.5%, 8.7% and 8.7% respectively. In addition, runoff simulation, in addition to land cover changes, is also affected by human activities.