基于USLE模型的浐灞河流域土壤侵蚀研究  

Soil Erosion in Chanba River Basin Based on USLE Model

作　　者：孙超[1] 韩伟刚[1] 齐苑儒[1] SUN Chao;HAN Weigang;QI Yuanru(Shaanxi Province Institute of Water Resources and Electric Power Investigation and Design,Xi’an,Shaanxi 710001,China)

机构地区：[1]陕西省水利电力勘测设计研究院,陕西西安710001

出　　处：《水利与建筑工程学报》2023年第1期226-232,共7页Journal of Water Resources and Architectural Engineering

基　　金：西安市护城河水质保持与提升关键技术研究(2019slkj-04);陕西省生态灌区评价指标与综合技术体系研究(2021slkj-17)。

摘　　要：对浐灞河流域土壤侵蚀状况进行定量研究,识别出侵蚀集中来源区域,为全运湖水环境综合施策布局提供指导。利用实测数据、遥感数据及收集资料,按照通用土壤侵蚀方程USLE模型的国内研究成果进行土壤侵蚀空间识别研究。2020年浐灞河流域平均土壤侵蚀模数为830.91 t/(km2·a),土壤侵蚀面积为696.46 km2,占全流域土地面积的27.79%。从空间分布上看,土壤侵蚀主要集中于灞河流域,辋川河流域及库峪河流域。浐灞河流域依据侵蚀集中指数及识别区域,优先开展调控措施,全运湖的减蚀澄清效果将较为明显。Quantitative analysis of soil erosion were conducted in Chanba River Basin to identify the intensive soil erosion source and steer the implementation of overall water environment treatment strategies in Quanyun Lake. Field test data, remote sensing data and collecting data were used to identify the spatial distribution of soil erosion based on results of USLE model. The average soil erosion in Chanba River Basin is 830.91 t/(km~2·a) in 2020, while the soil loss is up to 696.46 km~2 accounting 27.79% of the total land areas of Chanba River Basin. Spatially, soil loss happened intensively in Chanba River Basin, Wangchuan River Basin and Kuyu River Basin. Regulating measures need to be implemented in Chanba River Basin based on erosion concentration index and identified regions will contribute significantly to soil erosion reduction and water purification in Quanyun Lake.

关 键 词：土壤侵蚀方程模型(USLE) 浐灞河 土壤侵蚀 侵蚀集中指数 

分 类 号：S157.1[农业科学—土壤学]