干旱区生态环境知识资源中心(Arid): 低覆盖度乔木两种分布格局内风速流场和防风效果风洞实验

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	低覆盖度乔木两种分布格局内风速流场和防风效果风洞实验
其他题名	Windbreak Effects and Wind Velocity Flow Field of Low Density Arbor with Two Spatial Distribution Patterns in Wind Tunnel
	梁海荣 1; 王晶莹 1; 卢琦2 ; 杨文斌 1; 董慧龙 1; 赵爱国 3; 张正才 3
ISSN	1000-694X
出版年	2009
卷号	29 期号:6 页码:1021-1028
中文摘要	低覆盖度植被的防风固沙效果一直是防沙治沙工程中的关键问题.在风速为10 m·s~(-1) 和15 m·s~(-1) 的风洞实验条件下,模拟研究了覆盖度为20%的行带式分布和随机分布的乔木固沙林的风速流场和防风效果.结果表明:①在水平空间上,随机分布和行带式模式都形成了风影区和风速加速区相互组合的复杂水平流场结构,其中,随机分布要比行带式模式的流场结构更加复杂.②在垂直空间上,林冠下近地面(1.2 cm以下)风速都有微弱的增加,1.6～20 cm高度行带式模式内风速均有所减小,而随机分布模式风速变化无明显规律.③随机分布模式中两株植株相互组合时,不仅在植株两侧出现风速加速区,同时在两植株间出现风速加速区,出现 "狭管增速效应".
英文摘要	The sand-fixing and wind-preventing effects of the low density vegetation is all along the key issue in desertification combating engineering. A simulating experiment was conducted to study the wind flow field and wind-preventing effect of arbor sand-fixing forest with the coverage of 20% and in belt or random distributions. The study was carried out in wind tunnel and the experimental wind velocity was 10 m·s~(-1) and 15 m·s~(-1), respectively. The result indicated: ①A complex horizontal wind flow field formed in either the belt and the random distribution patterns, the field structure was composed of the wind shadow and the wind speed acceleration areas. But field structure of the random distribution pattern was more complex than that of the belt distribution pattern. ②For vertical distribution, the wind speed under the canopy (1.2 cm to the ground) increased a little, and that within 1.6～20 cm height decreased in the belt distribution pattern, but the change of wind speed showed no apparent rule in the random distribution pattern. ③When two plants assemble in the random distribution pattern, wind speed acceleration area appeared not only in both sides of the plants but also between the two plants, meaning the "channeling effect of increasing wind velocity."
中文关键词	风洞实验 ; 行带式分布模式 ; 随机分布模式 ; 风速流场 ; 防风效果
英文关键词	wind tunnel belt distribution pattern random distribution pattern wind velocity flow field windbreak effect
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:3785854
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224585
作者单位	1.内蒙古林业科学研究院, 呼和浩特, 内蒙古 010010, 中国; 2.中国林业科学研究院,林业新技术研究所, 北京 10009, 中国; 3.中国科学院,寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	梁海荣,王晶莹,卢琦,等. 低覆盖度乔木两种分布格局内风速流场和防风效果风洞实验[J]. 中国科学院西北生态环境资源研究院,2009,29(6):1021-1028.
APA	梁海荣.,王晶莹.,卢琦.,杨文斌.,董慧龙.,...&张正才.(2009).低覆盖度乔木两种分布格局内风速流场和防风效果风洞实验.,29(6),1021-1028.
MLA	梁海荣,et al."低覆盖度乔木两种分布格局内风速流场和防风效果风洞实验".29.6(2009):1021-1028.