| 栅栏式棉秆沙障的防风固沙效益研究 |
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| 引用本文： | 李瑞军,王继和,李毅,刘虎俊,孙涛,马瑞.栅栏式棉秆沙障的防风固沙效益研究[J].甘肃农业大学学报,2009,44(4). |
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| 作者姓名： | 李瑞军 王继和 李毅 刘虎俊 孙涛 马瑞 |
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| 作者单位： | 1. 甘肃农业大学林学院,甘肃,兰州730070
2. 甘肃省治沙研究所,甘肃,武威733000 |
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| 基金项目： | 甘肃省自然科学基金资助项目，国家"十一五"科技攻关项目 |
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| 摘 要： | 通过对孔隙度为40%的栅栏式棉秆沙障内风速和风蚀风积量的观测,发现栅栏式棉秆沙障不仅可以减弱风速,而且还有很好的固沙效果.在格状沙障内,风速的降低率最大可达32%.受主风向的影响,栅栏式棉秆沙障可形成与草方格沙障不同的跨障式凹曲面,沙障内积沙的最高点不在沙障部位,因此降低了沙障被沙埋的程度,延长了沙障的寿命,提高了防风固沙的效益.
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| 关 键 词： | 栅栏式棉秆沙障 防风固沙 效益 |
Study on the windbreak and sand fixation effects of cotton stalk fence barrier |
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| LI Rui-jun,WANG Ji-he,LI Yi,LIU Hu-jun,SUN Tao,MA Rui.Study on the windbreak and sand fixation effects of cotton stalk fence barrier[J].Journal of Gansu Agricultural University,2009,44(4). |
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| Authors: | LI Rui-jun WANG Ji-he LI Yi LIU Hu-jun SUN Tao MA Rui |
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| Institution: | LI Rui-jun1,WANG Ji-he2,LI Yi1,LIU Hu-jun2,SUN Tao2,MA Rui2(1.College of Forestry,Gansu Agricultural University,Lanzhou 730070,China,2.Gansu Desert Control Research Institute,Wuwei 733000,China) |
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| Abstract: | A field experiment on wind velocity and the volume of wind-eroding and sand-accumulated was conducted to analyze the benefit of fence-barrier with porosity 40 % made of cotton haulm.The results showed that the fence-barrier of cotton haulm could not only reduce wind velocity but also fix sand-shifting.In checkerboard sand-barriers,the maximum decreased ratio of wind velocity reached 32 %.Duo to long-term aeolian effects and accumulated-sand,a stable concave surface was formed in the checkerboard sand-barrie... |
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| Keywords: | fence-barrier of cotton haulm wind prevention and sand fixation benefit |
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