干旱区生态环境知识资源中心(Arid): 黑河下游绿洲地表辐射平衡及小气候特征分析

Arid

	黑河下游绿洲地表辐射平衡及小气候特征分析
其他题名	Ground Energy Balance and Microclimate Characteristics in the Oasis of Lower Reaches of Heihe River
	张艳武 1; 冯起1 ; 黄静 2; 司建华1 ; 张小由 1; 苏永红 1
ISSN	1000-0240
出版年	2006
卷号	28 期号:2 页码:191-198
中文摘要	利用额济纳绿洲2004年5～10月微气象站观测资料，分析了该地区地表能量平衡及小气候特征．结果表明：在绿洲内太阳总辐射、光合有效辐射、净辐射有明显的季节变化及日变化，日峰值及月总量在7月份达到最高．地表能量平衡季节变化显著，5、8、9、10月份，地面能量交换基本以感热通量为主，Bowen比值在日间〉4；6、7月份，潜热蒸发是能量平衡的主要部分，Bowen比基本〈1．5～10月土壤热通量值始终较小，约占净辐射的15％～20％．绿洲内近地层风速基本在0～5m·s^-1之间，夜间风速变化很小，日间风速较大．随着土壤深度的增加，土壤温度变化趋势越来越缓慢，地表温度波动变化最大，而在40cm深处土壤温度日变化很小．
英文摘要	Using the meteorological data in Ejin Oasis from May to October 2005, the ground energy balance and microclimate characteristics have been analyzed. The results showed that global radiation, photosynthesis availability radiation （PAR） and net radiation had pronounced seasonal and daily variations in the oasis, and the maximum daily peak value and maximum month integral values appeared in July. The seasonal variation of the ground energy balance was obvious. In May, August, September and October, the sensible heat flux was the major portion in the ground energy exchange, and the Bowen Ratio was greater than 4 on day time; in June and July, the latent heat flux was the major portion in energy balance, and the Bowen Ratio was less than 1 on day time. Soil heat flux was always relatively small from May to October; about 15% to 20% of the net radiation. Wind velocity in the surface layer changed between 0 and 5 m · s^-1, and the variation of wind velocity was small in night and relatively large in daytime. The change of soil temperature decreased with soil depth increasing. Daily variation of soil temperature was large at the earth surface and slight at 40 cm depth.
中文关键词	绿洲 ; 地表能量平衡 ; Bowen比 ; 小气候特征
英文关键词	oasis ground energy balance Bowen ratio microclimate characteristics
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:2318346
来源机构	中国科学院西北生态环境资源研究院 ; 兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219431
作者单位	1.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 2.兰州大学大气科学学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	张艳武,冯起,黄静,等. 黑河下游绿洲地表辐射平衡及小气候特征分析[J]. 中国科学院西北生态环境资源研究院, 兰州大学,2006,28(2):191-198.
APA	张艳武,冯起,黄静,司建华,张小由,&苏永红.(2006).黑河下游绿洲地表辐射平衡及小气候特征分析.,28(2),191-198.
MLA	张艳武,et al."黑河下游绿洲地表辐射平衡及小气候特征分析".28.2(2006):191-198.