摘要
利用d≥0.10 mm的粗泥沙输沙模数≥1 400 t/(km2.a)的指标在黄河中游多沙粗沙区中界定出粗泥沙集中来源区面积为1.88万km2,该面积占黄河中游多沙粗沙区面积的23.9%,年产沙量为4.08亿t,占多沙粗沙区年产沙总量的34.5%,产生d≥0.05 mm和d≥0.10 mm的粗泥沙量分别为1.52亿和0.61亿t,占多沙粗沙区相应输沙量的47.6%和68.5%,该区是名符其实的产粗泥沙“大户”。
The determined area of coarse sand concentrated coming region of the middle Yellow River is 18 800 km^2 by using the index of d≥0.10 mm modulus of coarse sand transport ≥1 400 t/(km^2·a).The area makes up 23.9% of the sediment-laden and coarse sand area of the middle Yellow River and annual sediment yield 408 million tons,making up 34.5% of annual sediment yield of that area.The coarse sand of d≥ 0.05 mm and d≥0.10 mm is 152 and 61 million tons respectively,making up 47.6% and 68.5% of corresponding sediment transport of the coarse sand region.This is the influential area in the real sense of the term.
出处
《中国水土保持》
北大核心
2006年第9期14-17,共4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
粗泥沙
集中来源区
面积
黄河中游
coarse sand
concentrated coming region
area
the middle Yellow River
