摘要
为了解江淮分水岭区域的水土流失情况及其影响因素,该文基于GIS平台,使用RUSLE模型,对2015年江淮分水岭区域土壤侵蚀现状进行了研究。结果表明:(1)2015江淮分水岭区域平均侵蚀模数为84.53t/(km^2·a)。土壤侵蚀以微度和轻度侵蚀为主,微度侵蚀的面积占比达97.81%,微度侵蚀总量达259.83×104~t·a^(-1)(74.35%),轻度侵蚀总量为56.89×104~t·a^(-1)(16.27%);土地利用类型中,耕地侵蚀量和侵蚀模数最高,耕地侵蚀量达314.26×104~t·a^(-1)(89.92%)。(2)侵蚀等级呈现东部、西南部高,中部、北部和西部区域较低,轻度以上的侵蚀主要发生在西南山区、巢湖东南部、滁州市中部、北部、东部区域;(3)土壤侵蚀受地形起伏、坡度、降水量和植被覆盖条件的影响明显。研究结果可为江淮分水岭区域水土流失的治理提供科学依据。
In order to study the soil erosion and its influencing factors in Jianghuai watershed area, based on GIS platform, the soil erosion status in the Jianghuai watershed area in 2015 is studied with the USLE model. The results show that： （1）The average erosion modulus in the Watershed watershed is 84.53 t/（km2·a）, dominated by mired and slight erosion, the area occupied by mired is 97.81%, and the total erosion of mired is 259.83× 10^4t· a-1 （74.35%）. The total amount of slight erosion is 56.89×10^4t· a-1（ 16.27% ）. In the land use type, Erosion quantity and erosion modulus of cultivated land is the highest, and the amount of cultivated land was 314.26× 10^4t· a-1（89.92%）. （2）The erosion grade is high in the east and southwest, low in the middle, north and west, and slightly more in the southwest mountainous area, southeast of Chaohu, the middle of the Chuzhou, north and east of Jianghuai watershed area. （3） Soil erosion is influenced by topography, slope, precipitation and vegetation cover condition. The results can provide scientific basis for soil erosion control in the Jianghual watershed area.
作者
毛晶晶
汪光胜
Mao Jingjing et al(Geography Information and Tourism College, Chuzhou University, Chuzhou 239000, Chin)
出处
《安徽农学通报》
2017年第9期67-71,共5页
Anhui Agricultural Science Bulletin
基金
国家级大学生创新训练项目(201610377019)
安徽省大学生创新训练项目(201610377042)
滁州学院大学生创新训练项目(2016CXXL048)
