摘要
以黄河上游拟建的羊曲水电站和在建的拉西瓦水电站为研究对象,采用人工降雨试验的方法,确定水电开发项目区及原状地表的土壤侵蚀模数,并用遥感解译方法对原状地表的土壤侵蚀模数进行校验。结果表明:羊曲水电站坝址不同土地利用类型的土壤侵蚀模数大小依次为泥石流堆积扇>荒地>林地>河滩地>耕地>草地,遥感解译结果与人工降雨试验结果相吻合。各类扰动地表土壤侵蚀模数大小依次为渣场>路堑边坡>料场>路堤边坡>主体工程区,上述区域的土壤侵蚀强度属剧烈。扰动地表与原状地表土壤侵蚀模数的比值为3～10,说明水电开发引起剧烈水土流失,因此在制定水土流失预防治理措施时,应以渣场、路堑边坡、料场、路堤边坡、主体工程区为重点区域。
We studied Yangqu and Laxiwa Hydropower stations on the upstream of the Yellow River.Soil erosion data were collected by using artificial precipitation test method in hydropower development project area and the original surface of the land;and soil erosion modulus of undisturbed surface were verified by using interpretation of remote sensing methods.The results showed that： the orders of soil erosion modulus of Yangqu Hydropower Station dam site are debris flow fans wasteland forest flood land farmland grassland and remote sensing interpretation results are consistent with artificial precipitation test.The orders of soil erosion modulus of Laxiwa Hydropower Station dam site are residue field cutting slope yard embankment the main project area and Laxiwa Hydropower Station dam site soil erosion intensity reached severe.The ratio of soil erosion modulus of disturbed and undisturbed land is 3 to 10,which indicated severe soil erosion was caused by hydropower development,therefore,residue field,cutting slope,yard,embankment slope and the main project area are the significant area,where soil erosion control measures should be taken.
出处
《人民黄河》
CAS
北大核心
2012年第1期86-88,共3页
Yellow River
基金
中国水电顾问集团西北勘察设计研究院资助项目(CHC-KJ-200804)
关键词
水电开发
扰动地表
土壤侵蚀
黄河上游
hydropower development
disturbance surface
soil erosion
upstream of the Yellow River
