| 高立式沙柳沙障防风效益研究 |
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| 引用本文： | 曹波,孙保平,高永,左合君,杨越,张小英,杨莉,高志亮,刘殿君.高立式沙柳沙障防风效益研究[J].中国水土保持科学,2007,5(2):40-45. |
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| 作者姓名： | 曹波 孙保平 高永 左合君 杨越 张小英 杨莉 高志亮 刘殿君 |
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| 作者单位： | 1. 北京林业大学水土保持学院,100083,北京
2. 内蒙古农业大学生态环境学院,010019,呼和浩特 |
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| 基金项目： | 国家科技攻关计划;国家自然科学基金 |
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| 摘 要： | 通过鄂尔多斯市伊金霍洛旗纳林陶亥镇境内毛乌素沙地边缘沙区的高立式沙柳沙障风速野外观测,利用Surfer（8.8）软件绘制了高立式沙柳沙障体系内外的风速流场图,分析高立式沙柳沙障的防风效益。结果表明:当旷野风速大于起沙风速时,复式带状高立式沙柳沙障体系内外风速变化较明显,防沙带2m高处风速呈现带前增强,带内平缓,带后减弱的趋势;而防沙带0.5m高处风速带内更趋向于平缓、稳定。此外,对沙柳沙障的粗糙度进行了研究。结果表明:障前212H（障高）范围内下垫面粗糙度变化不大;障间粗糙度明显增大;障后212H处的粗糙度比障间粗糙度降低了33.3%,但还是高于旷野对照点粗糙度,为旷野粗糙度的29倍。
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| 关 键 词： | 高立式沙柳沙障 防风效益 风速 粗糙度 |
| 修稿时间： | 2006-12-18 |
Effect of high-banded Salix psammophila sand-barriers on reduction of wind speed |
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| Cao Bo,Sun Baoping,Gao Yong,Zuo Hejun,Yang Yue,Zhang Xiaoying,Yang Li,Gao Zhiliang,Liu Dianjun.Effect of high-banded Salix psammophila sand-barriers on reduction of wind speed[J].Science of Soil and Water Conservation,2007,5(2):40-45. |
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| Authors: | Cao Bo Sun Baoping Gao Yong Zuo Hejun Yang Yue Zhang Xiaoying Yang Li Gao Zhiliang Liu Dianjun |
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| Institution: | 1.College of Soil and Water Conservation,Beijing Forestry University,100083,Beijing;2.College of Environment and Ecology,Inner Mongoulia Agriculture University,010019,Hohhot:China |
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| Abstract: | Based on the observation of the wind speed of the high Salix sand-barriers on field,in the Taohe town,Yijinhuoluo band in Mu Us desert,and using of Surfer(8.8) for the wind speed flow chart,the effects of wind-breaking were analyzed systematically.The results showed as following: when the wind speed is large than sand leaving speed,the double lines high Salix sand-barriers can bring obvious change of wind speed inside and outside of system.The 2m height wind speed presented in the system of barriers,which is increasing in front of the barriers,and decreasing behind of barriers and is smooth inside of system of barriers,but 0.5m height wind speed trend to smooth and steady;the variation of roughness of earth's surface is smooth in the front of barrier of 2-12H distance,but obvious increase inside of barriers,in 212?H distance behind of barrier cut down 33.3%,which is higher 29 times than field wind speed. |
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| Keywords: | high-banded Salix psammophila sand-barriers benefits of reducing wind speed wind speed roughness |
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