黄河流域兰州段土壤侵蚀敏感性评价  

Sensitivity Evaluation of Soil Erosion in Lanzhou Section of the Yellow River Basin

作　　者：武翠翠 王世杰 WU Cui-cui;WANG Shi-jie(Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China;National-local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring, Lanzhou 730070, China;Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, Lanzhou 730070, China)

机构地区：[1]兰州交通大学测绘与地理信息学院,兰州730070 [2]地理国情监测技术应用国家地方联合工程研究中心,兰州730070 [3]甘肃省地理国情监测工程实验室,兰州730070

出　　处：《科学技术与工程》2021年第29期12390-12397,共8页Science Technology and Engineering

基　　金：国家自然科学基金(41861061);兰州交通大学天佑创新团队项目(TY202001)。

摘　　要：黄河流域兰州段,由于严重的土壤侵蚀现象,带来的流域生态问题凸显。研究黄河流域兰州段土壤侵蚀敏感性问题,有助于解决该区域黄河流域生态环境保护与治理。选取降雨侵蚀力、土壤可蚀性、坡度、坡长、水土保持措施、植被覆盖6个因子,采用改进的加权土壤侵蚀(the revised universal soil loss equation,RULSE)模型,运用地理信息系统(geographic information system,GIS)和遥感技术评价该区域土壤侵蚀敏感性。结果显示:黄河流域兰州段土壤侵蚀极敏感区和重度敏感区占区域总面积的42.73%,中度敏感区占区域总面积的45.60%,轻度敏感区和不敏感区占区域总面积的11.67%。其中,最敏感区位于兰州市榆中县。研究结果可为黄河流域兰州段合理规划水土资源、生态环境保护和管控预警提供决策支持。In Lanzhou section of the Yellow River Basin,due to the serious soil erosion phenomenon,the ecological problems of the basin are prominent.To study the sensitivity of soil erosion in Lanzhou section of the Yellow River Basin is helpful to solve the ecological environment protection and management of the Yellow River Basin.Six factors,including rainfall erosivity,soil erodibility,slope,slope length,soil and water conservation measures and vegetation cover,were selected to evaluate the soil erosion sensitivity in this region by using the improved weighted revised universal soil loss equation(RUSLE)model and geographic information system(GIS)and remote sensing techniques.The results showed that the extremely sensitive area and the severely sensitive area account for 42.73%of the total area,the moderately sensitive area account for 45.60%of the total area,and the mildly sensitive area and insensitive area account for 11.67%of the total area.Among them,the most sensitive area is located in Yuzhong County of Lanzhou.The research results can provide decision support for rational planning of soil and water resources,ecological environmental protection and early warning of control in Lanzhou section of the Yellow River Basin.

关 键 词：土壤侵蚀 敏感性 地理信息系统(GIS) 黄河流域 兰州市 

分 类 号：P208[天文地球—地图制图学与地理信息工程]