新埠河流域不同阶段土壤侵蚀特性研究  

An Analysis of Characteristics of the Soil Erosion in Different Stages in the Xinbuhe River Basin

作　　者：余金凤[1,2] 洪林[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072 [2]广西水利水电职业技术学院,南宁530023

出　　处：《中国农村水利水电》2011年第6期29-31,共3页China Rural Water and Hydropower

基　　金：国家自然基金重点项目(50639040);国家自然基金(50979073);教育部科学研究重大项目(308017)

摘　　要：采用国际通用土壤侵蚀方程RUSLE定量研究湖北省漳河灌区新埠河流域1964-2008年不同阶段的土壤侵蚀特性,并对其发展趋势加以分析。研究表明:该流域的土壤侵蚀模数随着时间的推移呈现增加的趋势,土壤侵蚀模数由第1阶段的3.33 t/(hm2.a),增加到第4阶段的6.82 t/(hm2.a)。分析其原因,主要是流域内土地利用结构的改变,水田、河湖及林地面积的逐渐减少和旱地、居民建设用地不断增加,使得土壤侵蚀趋向严重。因此有必要对流域的水土资源加强管理,最大限度地减少人类活动造成的不利影响。The revised international universal soil erosion model RUSLE is used to study the characteristics of soil erosion in different stages of 1964-2008 in the Xinbuhe River basin,the Zhanghe Irrigation District in Hubei Province,and the tendency in soil erosion in this basin is analyzed in this paper.The results show that the soil erosion in this basin is increasing with time.The soil erosion module increases from 3.33 t/（hm^2·a） in 1964-1978 to 6.83 t/（hm^2·a） in 2001-2008.The results of soil erosion aggravation are mainly due to changes in the land use structure of the basin,including decreases in the areas of paddy field,lake,and forest,and increases in the areas of upland field and residence construction.Therefore,it is necessary to strengthen the soil and water management to mitigate the harmful effect of human activity.

关 键 词：新埠河流域 RUSLE模型 土壤侵蚀 趋势 人类活动 

分 类 号：S157[农业科学—土壤学]