基于USLE和GIS对雅鲁藏布江贡嘎段流域水土流失敏感度的评价  

Assessment of water and soil loss sensitivity in the Gongga section of the Yarlung Zangbo River basin based on USLE and GIS

作　　者：赵萌萌 张根[1] 古明双 ZHAO Mengmeng;ZHANG Gen;GU Mingshuang(College of Technology,Tibet University,Lhasa,Tibet 850000)

机构地区：[1]西藏大学工学院,西藏拉萨850000

出　　处：《长江信息通信》2023年第4期60-62,共3页Changjiang Information & Communications

基　　金：国家级大学生创新创业项目“基于通用土壤流失方程和GIS对雅江贡嘎段水土流失敏感度的评价”(202210694010)。

摘　　要：水土流失对生态环境、农业生产等方面危害巨大,为落实可持续发展战略,需重视水土流失问题。水土流失敏感度评价是生态保护红线划定的基础,本文以雅鲁藏布江贡嘎段为研究区域,基于通用土壤流失方程(USLE)对水土流失量的计算思路,选取5个评价单因子,建立雅鲁藏布江贡嘎段流域水土流失敏感度评价指标体系,结合GIS技术,对雅鲁藏布江贡嘎段流域水土流失敏感度进行综合评价。结果表明:雅鲁藏布江贡嘎段流域西部区域水土流失敏感度等级明显低于东部区域,不同水平的水土流失敏感度交织分布,需加大对研究区东部区域的水土流失治理力度,同时应重视研究区西部区域的水土流失预防工作。Soil erosion is harmful to ecological environment and agricultural production,etc.In order to implement sustainable development strategy,attention to soil erosion is needed.The evaluation of soil erosion sensitivity is the basis of ecological protection red line delineation.In this paper,we take the Gongga section of the Yarlung Tsangpo River as the study area,select five evaluation single factors based on the idea of calculating soil erosion amount by Universal Soil Loss Equation(USLE),establish the evaluation index system of soil erosion sensitivity in the watershed of the Gongga section of the Yarlung Tsangpo River,and combine with GIS technology to make a comprehensive evaluation of soil erosion sensitivity in the watershed of the Gongga section of the%rlung Tsangpo River.The results showed that:the sensitivity of soil erosion in the Yarlung Tsangpo River basin was evaluated.The results show that the soil erosion sensitivity level in the western part of the Yarlung Tsangpo River Gompa basin is significantly lower than that in the eastern part,and the different levels of soil erosion sensitivity are intertwined and distributed,so it is necessary to increase the soil erosion prevention and control efforts in the eastern part of the study area.

关 键 词：雅鲁藏布江 GIS 水土流失敏感度 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]