摘要
提出了不以粗糙度而以障内沙面蚀积强度作为衡量沙障固沙效能的综合标志，主张通过障埂占位、通过对障埂高度和障埂间距的调节控制风沙流的蚀积机制，在此基础上推导了控蚀公式，并以Ｋ值等于１／１０作为沙障成败优劣的判断标准，对指导治沙实践具有较强的可操作性。
In this study, erosion and accumulation intensity of sand surface in hege, taking place of roughness degree, have been put forward as comprehensive index to evaluate effects of fixing sand with sand control hedge. Meanwhile, a mechanism of controning windsand flow through taking the placeregulating the height of hedge and interval space between hedges, as well as a formula of controlling evosion which take K =1/10 as criteron for evaluating effect of sand control hedge, have been put forward too.
出处
《甘肃林业科技》
1999年第2期7-12,共6页
Journal of Gansu Forestry Science and Technology
关键词
沙障
固沙原理
风沙流
蚀积机制
控蚀公式
K值
sand control hedge
principals of fixing sand
windsand flow
mechanism for erosion and accumulation
formula of controlling erosion
K value
