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沙蓬防风阻沙效能初步研究
引用本文:杨光,丁国栋,赵廷宁,孙保平.沙蓬防风阻沙效能初步研究[J].水土保持研究,2006,13(2):172-174,243.
作者姓名:杨光  丁国栋  赵廷宁  孙保平
作者单位:北京林业大学水土保持学院,北京,100083
摘    要:选取了延庆县官厅湖畔的沙蓬试验地为研究对象,对沙蓬试验地的粗糙度、防风效能、输沙量、起沙风速及单株沙蓬的阻截沙范围进行的系统的观测和研究。结果表明,沙蓬试验地的粗糙度为6.17 cm,比迎风面空旷沙地高出5.37 cm;其防风效能在30 cm和50 cm高度处较好,分别为24.13%和17.07%,当高度达到200 cm时,已几乎没有防风效能;当风速达到7.1 m/s时,沙蓬试验地仍未见起沙现象;20 m in时段内平均风速为5.8 m/s时,沙蓬试验地的积沙量仅为0.62 g;单株沙蓬的阻截沙范围为1.37 m2。

关 键 词:沙蓬  防风阻沙  粗糙度  输沙量
文章编号:1005-3409(2006)02-0172-03
收稿时间:2005-04-18
修稿时间:2005-04-18

Preliminary Study on the Efficiency of Wind Prevention and Sand Resistance of Agriophyllum squarrosum(L)Moq
YANG Guang,DING Guo-dong,ZHAO Ting-ning,SUN Bao-ping.Preliminary Study on the Efficiency of Wind Prevention and Sand Resistance of Agriophyllum squarrosum(L)Moq[J].Research of Soil and Water Conservation,2006,13(2):172-174,243.
Authors:YANG Guang  DING Guo-dong  ZHAO Ting-ning  SUN Bao-ping
Institution:College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083 , China
Abstract:The Agriophyllum squarrosum(L)Moq.experimental plot in Guanting lakefront of Yanqing county was taken as investigation subject,based on the observations and investigations on roughness,effective function of wind prevention,amount of sediment transport,blown wind speed and single Agriophyllum squarrosum's sand resistance range.The result shows that the roughness of experimental plot is 6.17 cm,which is higher than clear sand land in windward slope with 5.37 cm;the effective function of wind prevention at the height of 30 cm and 50 cm is better,with the percentage separately is 24.13% and 17.07% and at the height of 200 cm nearly has no effective function of wind prevention;when the wind speed up to 7.1 m/s,the experimental plot still has no sand blown phenomenon;the average wind speed is 5.8 m/s in 20 min,the sand accumulation in the experimental plot is only 0.62 g;the single Agriophyllum squarrosum's sand resistance range is 1.37 m~2.
Keywords:Agriophyllum squarrosum(L)Moq  wind prevention and sand resistance  roughness  amount of sediment transport
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