摘要
在室内人工降雨试验的基础上,分析了等高耕作、人工掏挖和人工锄耕3项耕作措施对径流能量的削减作用和减蚀作用。结果表明:耕作措施对径流能量及坡面产沙均具有削减作用,其中等高耕作的作用最大,随雨强和地面坡度的增大其作用减弱;耕作措施对径流能量的削减作用与减蚀作用之间具有一定的相关关系,但坡面产沙同时受土壤抗蚀、抗冲性等因素的影响。
The paper analyzes the effect of three cultivation measures of contour cropping,manual excavation and manual hoeing to the reduction of run-off energy and erosion based on office artificial rainfall testing.The outcomes show that cultivation measures have the reduction functions of run-off energy and slope sediment production,of which,the action of contour cropping is the maximum and the action is reduced along with the increase of rainfall intensity and surface gradient;cultivation measures also have a certain correlation on the reduction functions of run-off energy and erosion,in the meanwhile of slope sediment production,it is effected by the factors of soil erosion resistance and scouring resistance.
出处
《人民黄河》
CAS
北大核心
2007年第3期51-52,54,共3页
Yellow River
基金
中科院知识创新项目(KZCX1-06-02-03)
西北农林科技大学青年科研专项
关键词
耕作措施
等高耕作
径流能量
土壤侵蚀
水土保持
cultivation measures,contour cropping,run-off energy,soil erosion,soil and water conservation
