摘要
小流域是黄土高原水土流失综合治理的基本单元，研究其侵蚀规律，对于水土保持措施的优化配置，有效地控制水土流失有着十分重要的意义。通过模拟试验，首次将REE示踪法引入到小流域侵蚀产沙的时间分布研究。试验结果表明：随小流域沟道的发育，流域侵蚀产沙的数量在逐渐减少；在次降雨过程中，不同部位侵蚀产沙量随时间而变化，变化趋势复杂。
A small watershed is the basic unit of comprehensively controlling soil and water loss in the Loess Plateau. lt is very important for designing soil and water conservation measures and preventing soil and water loss to study its erosion regular pattern. The result of experiment showed: With the developing of gullies,there existed a trend that erosive modulus of watershed gradually decreased. During single rainfall, the erosive amount at different landform varied with time, and the changes trend was very complex.
出处
《水土保持研究》
CSCD
1997年第2期85-91,共7页
Research of Soil and Water Conservation
关键词
小流域
时间分布
水土流失
综合治理
small watershed
temporal distribution
simulation experiment
