干旱区生态环境知识资源中心(Arid): Microclimatic characteristics of the Heihe oasis in the hyperarid zone of China

Arid

	Microclimatic characteristics of the Heihe oasis in the hyperarid zone of China
	Feng Qi; Si Jianhua; Zhang Yanwu; Yao Jiming; Liu Wei; Su Yonghong
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2006
卷号	16 期号:1 页码:34-44
英文摘要	The microclimate of a desert oasis in hyperarid zone of China was monitored using micrometeorological methods and compared with those of areas adjacent to forested land. Differences in ground-level photosynthetically active radiation （PAR） on clear, cloudy and dust storm days and their subtending causes are analysed and discussed. Desert oases serve the ecological functions of altering solar radiation, adjusting near-ground and land surface temperatures, reducing soil temperature differences, lowering wind velocity, and increasing soil and atmospheric humidity. The total solar radiation in the interior of the oasis was roughly half of that outside a forest canopy. During the growing season, air temperatures in Populus euphratica Oliv. （poplar） and Tamarix ramosissima Ledeb. （tamarisk） forests were 1.62℃ and 0.83 ℃ lower respectively than those in the areas around the forests. Furthermore, the miler the forest cover, the greater the temperature drops; air temperatures in the upper storey were greater than those in the lower storey, i.e., air temperature rose with increasing height. Over the growing season, the relative humidities of the air in the poplar and tamarisk forests were 8.5% and 4.2% higher respectively than those in areas around the forests. Mean wind velocity in poplar-forested lands was 0.33 m·s^-1, 2.31 m·s^-1 lower than that in the surrounding area. During dust storm days the PAR was significantly lower than that on cloudy or clear days, when it was high and varied in an irregular manner.
英文关键词	hyperarid zone desert oasis photosynthetically active radiation （PAR） microclimate
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:2675614
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334934
作者单位	Feng Qi, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China.; Si Jianhua, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China.; Zhang Yanwu, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China.; Yao Jiming, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China.; Liu Wei, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China.; Su Yonghong, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Feng Qi,Si Jianhua,Zhang Yanwu,et al. Microclimatic characteristics of the Heihe oasis in the hyperarid zone of China[J],2006,16(1):34-44.
APA	Feng Qi,Si Jianhua,Zhang Yanwu,Yao Jiming,Liu Wei,&Su Yonghong.(2006).Microclimatic characteristics of the Heihe oasis in the hyperarid zone of China.Journal of Geographical Sciences,16(1),34-44.
MLA	Feng Qi,et al."Microclimatic characteristics of the Heihe oasis in the hyperarid zone of China".Journal of Geographical Sciences 16.1(2006):34-44.