摘要
以昌都市左贡县扎玉镇为例,选用中巴地球资源二号遥感数据、数字高程模型数据和土地利用类型数据,用遥感软件提取植被指数并进行密度分割,确定植被覆盖度,并对其进行分级;用地理信息系统软件提取坡度信息,并对坡度进行分级;在1∶5万比例尺下修正已有的土地利用类型。结果统计扎玉镇76.26%的土壤处于轻度及以下侵蚀状态,强烈及以上的土壤侵蚀比例达5.48%,土壤侵蚀剧烈的地区主要分布在耕地部分,中度侵蚀的地区主要集中在林草地部分,因此土地利用合理化以及提高植被覆盖率可以有效减小土壤侵蚀强度。
Taking Zhayu town of Zuogong country in Changdu City as study area,and using CBERS-2 remote sensing images,digital elevation model data and land use type data,the authors extract vegetation index and density slice and determine vegetation coverage and classify it by the software of remote sensing,extract slope information and classify it by the software of geographic information system,and revise existing land use types under the scale of 1 ：500 00.The results show 76.26% of the soils in Zhayu town at a mild and below erosion state,strong and above soil erosion reach to 5.48%.The area of severe soil erosion mainly located at the cultivated land,middle soil erosion area mainly located at grassland.Therefore,rationalization of land utilize,the increase of the vegetation coverage and its related measure could reduce soil erosion intensity effectively.
作者
陆天启
陈圣波
范宪创
郭甜甜
涂媛
李亚洲
LU Tian-qi CHEN Sheng-bo FAN Xian-chuang GUO Tian-tian TU Yuan LI Ya-zhou(College of C, eo-exploration Science and Technology, Jilin University, Changchun 130026, China College of Earth Sciences, Guilin University of Technology, Guilin 541006, Guangxi, China)
出处
《世界地质》
CAS
2016年第4期1145-1150,共6页
World Geology
基金
中国地质调查局项目"航空高光谱遥感调查"(12120113072901)
国家地质矿产调查评价项目(1212011087112)联合资助
