摘要
在10 m/s试验风速下,运用风蚀仪、降尘缸等风蚀测量仪器,对裸露、10%砾石覆盖、20%砾石覆盖3种地表状态的风力侵蚀进行了人工模拟试验,对比分析水土保持措施防风蚀的效果。结果表明:无论是累积输沙量、输沙率还是沉积量,3种地表状态均为裸露地表>10%砾石覆盖>20%砾石覆盖,尤其是20%砾石覆盖状态下远远小于裸地。因此,砾石覆盖对防止风力侵蚀的效果是明显的,并且覆盖度越大,防风蚀效果越显著。
It conducted artificial simulation tests of wind erosion in three surface conditions of uncovered surface,10% gravel coverage and20% gravel coverage by using wind erosion instruments and dust vats under the conditions of 10 m/s testing wind speed and analyzed the effect of anti-wind erosion of soil and water conservation measures.The outcomes show that sediment discharge,sediment delivery ratio and deposit amount of the three surface conditions is uncovered surface﹥10% gravel coverage﹥20% gravel coverage and especially that of 20% gravel covered is far less than uncovered surface.Thus,the effect of anti-wind erosion by using gravel coverage is remarkable and the greater degree of coverage,the more remarkable of anti-wind erosion will be.
出处
《中国水土保持》
2012年第9期55-56,共2页
Soil and Water Conservation in China
基金
水利部"948"项目(201036)
关键词
风力侵蚀
风蚀仪
输沙量
输沙率
沉积量
兰州市
wind erosion
wind erosion instrument
sediment discharge
sediment delivery ratio
deposit amount
Lanzhou City
