基于GIS和RUSLE模型的台湾石门水库集水区的水土侵蚀监测  

Study of the Monitoring Soil Erosion of the Shimen Reservoir Watershed in Taiwan Based on RUSLE Model and GIS

作　　者：杨佳钦 余明[1,3] YANG Jiaqin;YU Ming(School of Geographical Sciences;Institute of Geography;The Center for Studies ofFujian and Taiwan,Fujian Normal University,Fuzhou 350007,China)

机构地区：[1]福建师范大学地理科学学院,福州350007 [2]福建师范大学闽台区域研究中心,福州350007 [3]福建师范大学地理研究所,福州350007

出　　处：《亚热带资源与环境学报》2018年第2期44-53,共10页Journal of Subtropical Resources and Environment

基　　金：福建省自然科学基金项目(2014J01149);福建师范大学大学生创新创业计划项目(cxxl-2015130)

摘　　要：以台湾石门水库集水区为研究对象,基于GIS空间分析方法,根据实况重新选取RUSLE模型中最具该区域代表性的各因子参数,对研究区内1988、1998、2009和2015年土壤侵蚀量进行监测。结果表明:近30年间研究区内土壤侵蚀总体状况明显改善,虽然多年平均土壤侵蚀模数属于强烈侵蚀等级,但年平均侵蚀模数却几乎降低一半,相应地,土壤年侵蚀总量也大幅减少,强烈侵蚀等级主要分布于250 m以下的高程带,高程带1 250 m以上有加重趋势。研究结果可为当地进行水土流失规划与治理提供科学参考依据。This study applies spatial analysis method of GIS on Shimen Reservoir Watershed in Taiwan,establishes a RUSLE model based on factors of regional observation data,and performs an analysis and a comparison on soil erosion condition based on the data obtained in year 1988,1998,2009 and 2015. The results indicate that the annual erosion was reduced significantly in 2015,while the mean soil erosion modulus value nearly declined to half of its original value 30 years ago. Even the value is declining,but soil erosion is still considered as severe based on the value from year 2015. Especially for regions with elevation over 1 250 m,the erosion condition is more significant than the regional with elevation below 250 m. This study result can be used as a reference to help provide a scientific basis for a more reasonable soil.

关 键 词：RUSLE GIS 水土侵蚀监测 石门水库集水区 

分 类 号：S157[农业科学—土壤学]