| 西北防护林防风效应研究 |
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| 引用本文： | 杜鹤强,韩致文,颜长珍,邓晓红,宋翔,廖杰.西北防护林防风效应研究[J].水土保持通报,2010,30(1):117-120. |
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| 作者姓名： | 杜鹤强 韩致文 颜长珍 邓晓红 宋翔 廖杰 |
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| 作者单位： | 中国科学院,寒区旱区环境与工程研究所,中国科学院,沙漠与沙漠化重点实验室,甘肃,兰州,730000 |
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| 基金项目： | 中国科学院知识创新工程重大项目，国家重点基础研究计划(973计划)，国家自然科学基金资助项目 |
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| 摘 要： | 风沙灾害是中国西北地区普遍存在自然灾害之一.为探查西北防护林的防风效能.,选取甘肃民勤和宁夏盐池2个典型的风沙灾害区,采用样地调查、统计分析、回归模型等方法,对农田片状林不同距地高度和不同疏透度在有效距离内的防风效能进行观测与分析,并对防风固沙林对地表粗糙度的影响进行了研究.结果表明,在防护林树冠以下有效防风距离内,随距地高度的增加防风效能逐渐增加;防护林的疏透度与其防风效能晕极显著负相关,相关系数达-0.941;防风固沙林随其郁闭度的增加,地面粗糙度逐渐增大,并给出防护林郁闭度和地面粗糙度之间的函数关系式.并且对产生这些结果的因为进行了初步的讨论.
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| 关 键 词： | 西北防护林 防风效能 距地高度 林带结构 粗糙度 |
| 收稿时间： | 2008/4/13 0:00:00 |
| 修稿时间： | 2009/6/29 0:00:00 |
Effects of Wind Prevention by the Northwest Shelterbelt |
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| DU He-qiang,HAN Zhi-wen,YAN Chang-zhen,DENG Xiao-hong,SONG Xiang and LIAO Jie.Effects of Wind Prevention by the Northwest Shelterbelt[J].Bulletin of Soil and Water Conservation,2010,30(1):117-120. |
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| Authors: | DU He-qiang HAN Zhi-wen YAN Chang-zhen DENG Xiao-hong SONG Xiang and LIAO Jie |
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| Institution: | DU He-qiang,HAN Zhi-wen,YAN Chang-zhen,DENG Xiao-hong,SONG Xiang,LIAO Jie (Cold , Arid Regions Environmental , Engineering Research Institute,, Key Laboratory of Desert , Desertification,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China) |
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| Abstract: | Wind-sand hazard is a common natural disaster in northwest region of China.Minqin,Gansu Province and Yanchi,Ningxia Province,which are the typical areas of wind erosion,were selected to investigate wind prevention by the northwest shelterbelt.The wind prevention of the schistose shelterbelt in farmland with different heights from ground and in different structures were observed and moreover,the windbreak and sand-fix forest that may influence ground roughness were studied.The methods of sample area survey,s... |
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| Keywords: | northwest shelterbelt effect of wind prevention height from ground structure roughness |
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