干旱区生态环境知识资源中心(Arid): Influence factors and variation characteristics of water vapor absorption by soil in semi-arid region

Arid

	Influence factors and variation characteristics of water vapor absorption by soil in semi-arid region
	Zhang Qiang; Wang Sheng; Wang Shanshan; Zhao Yingdong; Wen Xiaomei
来源期刊	Science China. Earth Sciences
ISSN	1674-7313
出版年	2016
卷号	59 期号:11 页码:2240-2251
英文摘要	The adsorption of water vapor by soil is one of the crucial contributors to non-rainfall water on land surface, particularly over semi-arid regions where its contribution can be equivalent to precipitation and can have a major impact on dry agriculture and the ecological environment in these regions. However, due to difficulties in the observation of the adsorption of water vapor, research in this area is limited. This study focused on establishing a method for estimating the quantitative observation of soil water vapor adsorption (WVA), and exploring the effects of meteorological elements (e.g., wind, temperature, and humidity) and soil environmental elements (e.g., soil temperature, soil moisture, and the available energy of soil) on WVA by soil over the semi-arid region, Dingxi, by combining use of the L-G large-scale weighing lysimeter and meteorological observation. In addition, this study also analyzed the diurnal and annual variations of WVA amount, frequency, and intensity by soil, how they changed with weather conditions, and the contribution of WVA by soil to the land surface water budget. Results showed that WVA by soil was co-affected by various meteorological and soil environmental elements, which were more likely to occur under conditions of relative humidity of 6-50% and the diurnal variation of relative humidity was large, inversion humidity, wind velocity of 3-4 m/s, lower soil water content, low surface temperature and slightly unstable atmospheric conditions. There was a negative feedback loop between soil moisture and the adsorption of water vapor, and, moreover, the diurnal and annual variations of WVA amount and frequency were evidentWVA by soil mainly occurred in the afternoon, and the annual peak appeared in December and the valley in June, with obvious regional characteristics. Furthermore, the contribution of WVA by soil to the land surface water budget obviously exceeded that of precipitation in the dry season.
英文关键词	Semi-arid region Water vapor adsorption Micro-meteorological elements Soil environment Water budget
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5845711
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335728
作者单位	Zhang Qiang, Institute of Arid Meteorology, Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province;;Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA;;Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, Lanzhou, Gansu 730020, China.; Wang Sheng, Institute of Arid Meteorology, Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province;;Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA;;Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, Lanzhou, Gansu 730020, China.; Wang Shanshan, Institute of Arid Meteorology, Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province;;Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA;;Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, Lanzhou, Gansu 730020, China.; Zhao Yingdong, Hydrology and Water Resources Bureau of Gansu Province, Lanzhou, Gansu 730000, China.; Wen Xiao...
推荐引用方式 GB/T 7714	Zhang Qiang,Wang Sheng,Wang Shanshan,et al. Influence factors and variation characteristics of water vapor absorption by soil in semi-arid region[J],2016,59(11):2240-2251.
APA	Zhang Qiang,Wang Sheng,Wang Shanshan,Zhao Yingdong,&Wen Xiaomei.(2016).Influence factors and variation characteristics of water vapor absorption by soil in semi-arid region.Science China. Earth Sciences,59(11),2240-2251.
MLA	Zhang Qiang,et al."Influence factors and variation characteristics of water vapor absorption by soil in semi-arid region".Science China. Earth Sciences 59.11(2016):2240-2251.