干旱区生态环境知识资源中心(Arid): Variation characteristics of non-rainfall water and its contribution to crop water requirements in China's summer monsoon transition zone

Arid

DOI	10.1016/j.jhydrol.2019.124039
	Variation characteristics of non-rainfall water and its contribution to crop water requirements in China's summer monsoon transition zone
	Zhang, Qiang1,2,3 ; Wang, Sheng 1; Yue, Ping 1; Wang, Shanshan 1
通讯作者	Wang, Sheng
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	578
英文摘要	Comprising mainly fog water, dew water, and water-vapor adsorption (WVA), non-rainfall water (NRW) makes an important contribution to the local ecology in the arid and semi-arid regions. Although NRW components have been studied individually in previous work, little attention has been paid to the integrated characteristics of NRW and the corresponding relationships among the components. In fact, few other studies have considered how NRW components form and change, let alone how they contribute to land surface water (LSW) balance and influence crop water requirements in China. In this paper, a method will be established for identifying components of NRW, based on a combination of lysimeter measurements and micro-meteorological data from Dingxi Station in the summer monsoon transition zone (SMTZ) of China. Diurnal time series of NRW components will be given. The relationship between NRW and climatic and environmental factors is then analyzed. Finally, the diurnal and annual variations of NRW and how they contribute to LSW balance and crop water requirements are discussed. The results show that the influence of climatic and environmental conditions to occur dew and WVA is different even opposite affects such as relative humidity to that. There is negative feedback between soil moisture and WVA; this does not hold, however, for dew. The variation characteristics of dew and WVA are different. Their diurnal variation shows the complementary characteristics of each other. Not only that, the annual distribution of NRW also complemented with that of precipitation. Although NRW contributes to no more than 15% of the water balance in a full year, NRW plays a leading role during the non-monsoon period, wherein the amount of NRW is 1-3.5 times that of precipitation. Moreover, it is just the period of soil water conservation and sowing date for crops such as winter wheat. Therefore, the existence of NRW is fundamental for alleviating agricultural drought. It explained that NRW has great significance for reducing agricultural losses and understanding the LSW balance in the SMTZ.
英文关键词	Summer monsoon transition zone (SMTZ) Lysimeter Non-rainfall water (NRW) Land surface water (LSW) balance Crop water requirement period
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000497250200069
WOS关键词	VAPOR ADSORPTION ; NIGHTTIME EVAPOTRANSPIRATION ; ATMOSPHERIC MOISTURE ; DEW FORMATION ; NEGEV-DESERT ; BARE SOIL ; PRECISION ; PRECIPITATION ; LYSIMETER ; BALANCE
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
EI主题词	2019-11-01
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310638
作者单位	1.CMA, Inst Arid Meteorol, Key Open Lab Arid Climate Change & Disaster Reduc, Key Lab Arid Climat Change & Reducing Disaster Ga, Lanzhou, Gansu, Peoples R China; 2.Gansu Meteorol Bur, Lanzhou, Gansu, Peoples R China; 3.Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qiang,Wang, Sheng,Yue, Ping,et al. Variation characteristics of non-rainfall water and its contribution to crop water requirements in China's summer monsoon transition zone[J]. 兰州大学,2019,578.
APA	Zhang, Qiang,Wang, Sheng,Yue, Ping,&Wang, Shanshan.(2019).Variation characteristics of non-rainfall water and its contribution to crop water requirements in China's summer monsoon transition zone.JOURNAL OF HYDROLOGY,578.
MLA	Zhang, Qiang,et al."Variation characteristics of non-rainfall water and its contribution to crop water requirements in China's summer monsoon transition zone".JOURNAL OF HYDROLOGY 578(2019).