干旱区生态环境知识资源中心(Arid): 荒漠河岸林胡杨和柽柳群落小气候特征研究

Arid

	荒漠河岸林胡杨和柽柳群落小气候特征研究
其他题名	Features of Microclimate in Populus euphratica and Tamarix ramosissima Communities in Desert Riparian Forest
	司建华; 冯起; 张小由; 苏永红; 吉喜斌
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2005
卷号	25 期号:5 页码:668-674
中文摘要	在内蒙古额济纳旗运用微气象学方法以多路传感器同步观测的方式对极端干旱区荒漠河岸林小气候进行了观测.对我国极端干旱区荒漠河岸林胡杨和柽柳群落内的小气候特征与空旷地的差异进行了初步的探讨,并分析了产生这些差异的原因.结果表明: 荒漠河岸林具有独特的小气候作用.具有改变太阳辐射、调节近地层地表及地下温度、缩小温差、降低风速、增加土壤湿度和提高空气湿度等重要生态作用.(1)胡杨和柽柳群落均起到了改变太阳辐射的作用,林冠层顶部的太阳总辐射量月平均值分别为341.72 MJm-2、345.14 MJm-2,林冠遮蔽使胡杨和柽柳林内总辐射比林外分别减少49.8%、49.3%;(2)生长季胡杨和柽柳林内的气温均低于林外,胡杨林平均比对照低1.62℃,柽柳林平均比对照低0.83℃, 而且森林覆盖率越高降温作用越明显;群落上层气温高于群落下层, 气温随高度增加而增加;(3)林内平均大气相对湿度均高于林外,胡杨林生长季比对照平均高8.5%,柽柳林平均比对照大4.2%.胡杨林地空气相对湿度各月值高于柽柳林地,平均湿度比柽柳高4.33%;(4)柽柳林月平均土壤温度(19.43℃)高于胡杨林地(18.20℃);(5)林内风速低于林外,胡杨林地平均风速为0.33 m·s-1,比林外降低了2.7 m·s-1;柽柳林平均风速为0.72 m·s-1,比林外降低了2.31 m·s-1.胡杨林比柽柳林对风的阻挡作用强.
英文摘要	Using the micrometeorological method we observed the microclimate in the Populm euphratica andlamanx ramosissima communities from May to October in the years of 2002 and 2003 in the desert riparian forest of the extreme and region in northwest China. The difference of microclimate between the Populus euphratica andlamanx ramosissima communities, as well as their comparison with the bare land was analyzed. The results showed that the desert riparian forest has particular partial climate effect, such as changing the radiation condition of land, adjustmg the temperature of land surface and underground, reducing temperature, slowing down wind speed, imprtmng the humidity of soil and air efficiently. (DPojmlm euphratica and Tamarix ramosissima communities can change the radiation condition of land because of the canopy cover of Populus euphratica and Tamarix mrno-msima, the total radiation in the above two forests are 49.8% and 49.3% lower than that in the check field, re-spectively ;(2)The mean temperature in Populus euphratica and Tamarix ramosissima communities are 1. 62°C and 0. 83 C , which * lower than that in the check field, the higher of the cover rate, the more significant of the ettect of lowering temperature. With the height decreases, the air temperature decreases gradually in growing sea-son (3)1 he mean relative humidity in Populus euphratica and Tamarix ramosissima forests are 37.5% and 33.2%, respectively, which is higher than that in the check field (8. 5% and 4.2%, respectively). (4)The soil temperature in Populus euphratica community (18. 2°C )is lower than that in Tamarix ramosmima (19. 43°C ). With the height decreases, the soil temperature gradually decreases both in Populus euphratica and Tamarix ?raa communities. (5)Wind speed in communities is lower than that over bare land, the mean wind speed in Populus euphratica and Tamarix ramosissima communities are 0. 33 m-s- and 0. 72 m-s"1 respectively.
中文关键词	极端干旱区 ; 荒漠河岸林 ; 胡杨 ; 柽柳 ; 小气候
英文关键词	extreme and region desert riparian forest Populus euphratica Tamarix ramosissima microclimate
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:2077203
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/2XILL650/207008
作者单位	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	司建华,冯起,张小由,等. 荒漠河岸林胡杨和柽柳群落小气候特征研究[J]. 中国科学院西北生态环境资源研究院,2005,25(5):668-674.
APA	司建华,冯起,张小由,苏永红,&吉喜斌.(2005).荒漠河岸林胡杨和柽柳群落小气候特征研究.中国沙漠,25(5),668-674.
MLA	司建华,et al."荒漠河岸林胡杨和柽柳群落小气候特征研究".中国沙漠 25.5(2005):668-674.