【作者】 邵辉； 高建恩； 张元星； 郝连安； 王飞；

【Author】 Shao Hui~1,Gao Jian’en~(1,2,3*),Zhang Yuanxing~1,Hao Lian’an~1,Wang Fei~1 (1.Northwest A&F University,Yangling 712100,China;2.Institute of Soil and Water Conservation;Chinese Academy of Sciences and Ministry of Water Resources,Yangling 712100, China;3.National Engineering Research Center for Water-saving Irrigation at Yangling, Yangling 712100,China)

【机构】 西北农林科技大学； 中国科学院水利部水土保持研究所； 国家节水灌溉杨凌工程技术研究中心；

【摘要】 针对黄土高原土地资源紧张,坡地资源利用潜力巨大,土地利用评价研究薄弱问题,基于GIS软件,通过分析黄土高原燕沟流域DEM数据、坡度数据以及不同年代土地利用数据,对燕沟流域的土地利用变化以及坡地资源潜力进行初步分析。结果表明:燕儿沟流域以旱地农田与草甸草地为主,经过1995～2000年大规模治理,陡坡(大于25°)农地向林地和草地的转化,缓坡上林草地向农地的转化,以及坝地梯田增加最为显著。但流域内陡坡农地和缓坡林草地的面积依然较大,坡地资源合理利用仍有一定潜力,需要进一步调整土地利用方式,以发挥土地利用潜力。而作为一种快捷、直观的方法,运用GIS技术对黄土高原地区坡地资源的评价是可行的。更多还原

【Abstract】 Aiming at the fact that land resource in Loess Plateau is very limited and inadequate evaluation of its use where slope land has great potential,a preliminary study of slope land potential of Yan valley in Loess Plateau is carried out based on DEM data and two periods of land use/cover data by GIS software.The result shows that most area of Yan valley is covered by meadow and dry farmland.And after 5 years environmental construction from 1995 to 2000,the conversion from farmland to forest in steep gradient(>25°) and from grassland to farmland in gentle slope(7～25°) as well as the increase of terrace and dam field are the most significant.However,there are still vast area of farmland in steep hill and forest in flat ground, and the slope land will still need more adjustment for reasonable use of its potential.The research also finds that GIS software is a feasible way of analysis and estimating the slope potential in Loess Plateau.更多还原