摘要
通过对黄河中游多沙粗沙区中d≥0.05 mm和d≥0.10 mm不同粗泥沙年输沙模数级的区域分布及产沙量的分析,得出d≥0.05 mm粗泥沙年输沙模数大于等于2 500、5 000和10 000 t/km2的粗泥沙来源区面积分别为5.82万、1.97万和0.22万km2,对应区域产生的全沙量分别占黄河中游多沙粗沙区全沙量的80.0%、35.6%和5.9%;d≥0.10mm粗泥沙年输沙模数大于等于350、700、1 400和2 800 t/km2的粗泥沙来源区面积分别为5.80万、3.94万、1.88万和1.17万km2,对应区域产生的全沙量分别占黄河中游多沙粗沙区全沙量的79.8%、58.3%、34.5%和24.2%。研究不同输沙模数级的区域分布、面积及产沙量,为粗泥沙集中来源区界定提供支撑。
Through the analysis on different distribution of annual modulus of coarse sand of d≥0.05 mm and d≥0.10 mm and sediment yield of the sediment-laden and coarse sand area of the middle Yellow River,it obtains that the coarse sand coming area where is greater than and equal to 2 500 t/km^2,5 000 t/km^2 and 10 000 t/km^2 of annual modulus of coarse sand of d≥0.05 mm is 58 200 km^2,19 700 km^2 and(2 200) km^2 respectively and the total load produced in a check area makes up 80.0%,35.6% and 5.9% respectively of the total load of coarse sand region of the middle Yellow River and;the coarse sand coming area where is greater than and equal to 350 t/km^2,700 t/km^2,1 400 t/km^2 and 2 800 t/km^2 of annual modulus of coarse sand of d≥0.10 mm is 58 000 km^2,39 400 km^2,18 800 km^2 and 11 700 km^2 respectively and the total load produced in a check area makes up 79.8%,58.2%,34.5% and 24.2% respectively of the total load of coarse sand region of the middle Yellow River.The study on regional distribution,area and sediment yield of different modulus of sediment transport provides a support to decide the coarse sand concentrated coming area.
出处
《中国水土保持》
北大核心
2006年第9期5-7,共3页
Soil and Water Conservation in China
基金
黄河水利委员会治黄专项[黄规计(2004)197号]
关键词
多沙粗沙区
粗泥沙
输沙模数
产沙量
黄河中游
sediment-laden and coarse sand area
coarse sand
modulus of sediment transport
sediment yield
the middle Yellow River
