土地利用变化对阜平流域的径流影响研究  

Impact of Land Use Change on Runoff in the Fuping Basin

作　　者：郝振纯[1] 苏振宽[1] 鞠琴[1] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098

出　　处：《中山大学学报（自然科学版）》2014年第3期128-133,共6页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：全球变化研究国家重大科学研究计划项目(2010CB951103);国家自然科学基金资助项目(41101015;41371047);水文水资源与水利工程科学国家重点实验室专项经费资助项目(1069-50985512)

摘　　要：选取不同年份Landsat遥感卫星图像,分析了阜平流域土地利用变化;以SWAT模型为工具,利用1968-2010年的水文气象资料,针对土地利用情况研究土地利用变化对流域径流的影响。结果表明,近几十年来,多年降水量变化不显著,而径流量呈显著下降趋势;流域林地增加(草地转林地)是径流减少的主要原因,从1993年的926 km2增加到2004年的1 119 km2,径流量减少6.46%;不同情景下模拟的多年平均流量总体呈现减少的趋势;林地的增加和草地的减少能够导致径流的减少;林地和草地的变化通过影响蒸散发量影响水文循环;径流量的变化趋势与蒸散发量相反。Landsat remote sensing satellite images in different years were used to analyze land use change in the Fuping Basin, then the hydrological and meteorological data during 1968 -2010 was used into SWAT model for analyzing the impact of land use change on runoff. In recent decades, the change of precipitation is not obvious, while the change of runoff shows a significant trend of decreasing. Increased watershed woodland （grassland turns to woodland） is the main reason for reducing runoff. Runoff de- creased by 6.46% with the change of woodland area from 926 km2 in 1993 to 1119 km2 in 2004. Simula- ted average annual runoff under different scenarios overall decreased. Increasing of woodland and decrea- sing of grassland can lead to a reduction of runoff. Changes of woodland and grassland affect the hydrolog- ical cycle through affecting the evapotranspiration. The change trend of runoff shows a negative correlation with the evapotranspiration.

关 键 词：阜平流域 SWAT模型 土地利用变化 径流量 蒸散发量 

分 类 号：P341[天文地球—水文科学]