干旱区生态环境知识资源中心(Arid): Variations in Soil Water Content and Evapotranspiration in Relation to Precipitation Pulses within Desert Steppe in Inner Mongolia, China

Arid

DOI	10.3390/w11020198
	Variations in Soil Water Content and Evapotranspiration in Relation to Precipitation Pulses within Desert Steppe in Inner Mongolia, China
	Song, Yifan 1; Lu, Yajing 2; Guo, Zhongxiao 1; Xu, Xiaomin 1; Liu, Tiejun 1; Wang, Jun 1; Wang, Wenjun 1; Hao, Weigang 1; Wang, Jian 1
通讯作者	Lu, Yajing
来源期刊	WATER
EISSN	2073-4441
出版年	2019
卷号	11 期号:2
英文摘要	Neither single nor discontinuous hydrological observation data can truly reflect periodic changes in soil moisture under natural conditions or interrelationships between various water sources. Therefore, in this study, precipitation pulse characteristics and variations in the soil water content (SWC) and actual evapotranspiration (ETa) in relation to pulses are explored through a field multi-water continuous observation system set in desert steppe in Inner Mongolia, China. A comparison between precipitation events in the growing seasons of 2016 and 2017 shows that precipitation events that are greater than 10 mm are the main cause of dramatic interannual precipitation variations in this region. A single small precipitation event has a limited impact on SWC and provides no obvious increase in the SWC within the top 10 cm soil layer. The precipitation interval ratio (P/I) is suitable for comparing water stresses of different drying-wetting cycles, and correlations between soil layers are found to be closer in humid years than in dry years. In this study, three modes of interpulse ETa in the desert steppe are discussed: a stable ETa mode under a water-sufficient condition, an attenuation ETa mode, and a stable ETa mode under extreme drought conditions.
英文关键词	precipitation pulses soil water content actual evapotranspiration desert steppe precipitation interval ratio
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000460899600017
WOS关键词	MICROBIAL RESPIRATION ; CLIMATE-CHANGE ; SEMIARID REGION ; DEW FORMATION ; CARBON ; VEGETATION ; GRASSLAND ; RAINFALL ; DESERTIFICATION ; PRODUCTIVITY
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219171
作者单位	1.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat ofWater Cycle Riv, Beijing 100038, Peoples R China; 2.Beijing Water Sci & Technol Inst, Dept Disaster Prevent & Reduct, Beijing 100048, Peoples R China
推荐引用方式 GB/T 7714	Song, Yifan,Lu, Yajing,Guo, Zhongxiao,et al. Variations in Soil Water Content and Evapotranspiration in Relation to Precipitation Pulses within Desert Steppe in Inner Mongolia, China[J],2019,11(2).
APA	Song, Yifan.,Lu, Yajing.,Guo, Zhongxiao.,Xu, Xiaomin.,Liu, Tiejun.,...&Wang, Jian.(2019).Variations in Soil Water Content and Evapotranspiration in Relation to Precipitation Pulses within Desert Steppe in Inner Mongolia, China.WATER,11(2).
MLA	Song, Yifan,et al."Variations in Soil Water Content and Evapotranspiration in Relation to Precipitation Pulses within Desert Steppe in Inner Mongolia, China".WATER 11.2(2019).