水土保持通报2024，Vol.44Issue(6)：106-117,12.DOI:10.13961/j.cnki.stbctb.2024.06.012
三江源区土壤侵蚀野外调查报告
Report on Field Survey of Soil Erosion in Three-River-Source Region
摘要
Abstract
[Purpose]Field investigations were carried in the three-river-source region,to provide a reference for soil erosion prevention and control in the region.[Methods]The investigation team travelled to Guoluo,Yushu,Hainan,and Huangnan Prefectures in Qinghai Province in three separate groups from July 25 to August 20,2023.Woodlands,grasslands,farmlands,bare lands,roads,riverbanks,and mountain gullies in these areas were surveyed and analyzed.[Results]Grassland had the most complex type of soil erosion and was subjected to the joint action of multiple camp-force erosions such as wind erosion,water erosion,freezing and thawing erosion,and gravity erosion,resulting in serious soil erosion.In addition,grassland damage by highland rodents may be another important factor in the occurrence of grassland erosion.Forestland had erosion gullies in the standing forest;however,the overall risk of erosion was low due to engineered slope protection.The foot of the slope on which the shrub land is situated was more exposed to hydraulic and gravitational erosion and was at greater risk of erosion.The farmland was spread over a small area,with mild water erosion occurred in the field.For bare ground,fine gully erosion was more intense,and soil erosion was serious.Notably,on both sides of the road,the slopes were more severely eroded,and the excavation of the project has led to the destruction of the turf,sliding under gravity,and the emergence of larger exposed surfaces,which provide conditions for the occurrence of water erosion,leading to a larger network of erosion gullies that have already formed in some areas.[Conclusion]Soil erosion in the three-river-source region of Qinghai Province is complex and varied,with the intensification of human activities and the risk of further exacerbation of soil erosion in localized areas.There is an urgent need to conduct soil and water conservation work in the new era,and there is a need to strengthen basic research on soil erosion in the region,the deployment of the network of soil and water conservation monitoring stations,and intelligent management.关键词
三江源区域/土壤侵蚀/水土保持/土地利用Key words
the three-river-source region/soil erosion/soil and water conservation/land use分类
农业科技引用本文复制引用
崔志伟,李鹏,马建业,肖列,李琛阳,王周,杨秀玲,宁静,李洁..三江源区土壤侵蚀野外调查报告[J].水土保持通报,2024,44(6):106-117,12.基金项目
国家自然科学基金清华大学联合基金项目"黄河中游水系格局与河流形态变化及水沙效应"(U2243201) （U2243201）
国家林业和草原局西北调查规划院科研项目"三江源地区低盖度灌木林生态服务功能调查及研究项目"(104-441123174) （104-441123174）
