摘要
研究土地利用变化对横排头流域蒸散发的影响。以1980,1990,2000年土地利用专题地图和横排头流域1980-2009年30a资料,通过GIS技术与Matlab相结合的手段,首先检验了基于Budyko假设的傅抱璞公式在研究流域的适用性,而后应用它分析研究了土地利用变化时的蒸散发规律。研究表明:不同土地利用的傅抱璞公式的v从大到小依次为耕地>未使用地>林地>城镇>草地;研究流域砍林使得多年平均实际蒸散发平均增加193mm,而造林使得多年平均实际蒸散发变化平均减少290mm。
Based on 1980 ,1990 ,2000 land use maps of Hengpaitou Basin and the hydrologic data from 1980 to 2009 in this basin , through the combination of GIS and Matlab methods ,this paper firstly tests the applicability of watershed Fu Baopu formula based on Budyko hypothesis in the studying basin ,and then analyzes and studies the evapotranspiration of land use change rule by using it . The research results show that v of different land use in Fu Baopu formula from large to small is as follows：cultivated land 〉 un‐used land 〉 forest land 〉 town 〉 grassland;cutting the forest makes the average years of actual evapotranspiration increase an av‐erage of 193 mm ,while ,the average years of afforestation that actual evapotranspiration changes mean reduction in 290 mm .
出处
《中国农村水利水电》
北大核心
2015年第9期68-72,76,共6页
China Rural Water and Hydropower
