干旱区生态环境知识资源中心(Arid): Dynamics of Nocturnal Evapotranspiration and Its Biophysical Controls over a Desert Shrubland of Northwest China

Arid

DOI	10.3390/f12101296
	Dynamics of Nocturnal Evapotranspiration and Its Biophysical Controls over a Desert Shrubland of Northwest China
	Guo, Xiaonan; Shang, Guofei; Tian, Yun; Jia, Xin; Zha, Tianshan; Li, Cheng; Yang, Huicai; Zhang, Xia
通讯作者	Tian, Y (corresponding author), Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China. ; Tian, Y (corresponding author), Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China.
来源期刊	FORESTS
EISSN	1999-4907
出版年	2021
卷号	12 期号:10
英文摘要	Knowledge about the dynamics and biophysical controlling mechanism of nocturnal evapotranspiration (ETN) in desert-dwelling shrub ecosystem is still lacking. Using the eddy covariance measurements of latent heat flux in a dried shrubland in northwest China, we examined the dynamics of ETN and its biophysical controls at multiple timescales during growing-seasons from 2012 to 2014. The ETN was larger in the mid-growing season (usually in mid-summer) than in spring and autumn. The maximum daily ETN was 0.21, 0.17, and 0.14 mm night(-1) in years 2012-2014, respectively. At the diel scale, ETN decreased from 21:00 to 5:00, then began to increase. ETN were mainly controlled by soil volumetric water content at 30 cm depth (VWC30), by vapor pressure deficit (VPD) and normalized difference vegetation index (NDVI) at leaf expanding and expanded stage, and by air temperature (T-a) and wind speed (W-s) at the leaf coloring stage. At the seasonal scale, variations of ETN were mainly driven by T-a, VPD, and VWC10. Averaged annual ETN was 4% of daytime ET. The summer drought in 2013 and the spring drought in 2014 caused the decline of daily evapotranspiration (ET). The present results demonstrated that ETN is a significant part of the water cycle and needs to be seriously considered in ET and related studies. The findings here can help with the sustainable management of water in desert ecosystems undergoing climate change.
英文关键词	biophysical controls nocturnal evapotranspiration multiple timescales eddy covariance desert shrubland
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000713421000001
WOS关键词	ECOSYSTEM CO2 EXCHANGE ; SEMIARID SHRUBLAND ; SAP FLOW ; NIGHTTIME TRANSPIRATION ; CARBON ; WATER ; VARIABILITY ; CONDUCTANCE ; BALANCE ; DAYTIME
WOS类目	Forestry
WOS研究方向	Forestry
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368363
作者单位	[Guo, Xiaonan; Shang, Guofei; Yang, Huicai; Zhang, Xia] Hebei GEO Univ, Sch Land Sci & Space Planning, Shijiazhuang 050031, Peoples R China; [Guo, Xiaonan] Hebei GEO Univ, Hebei Prov Key Lab Sustained Utilizat & Dev Water, Shijiazhuang 050031, Peoples R China; [Guo, Xiaonan; Tian, Yun; Jia, Xin; Zha, Tianshan] Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China; [Tian, Yun; Jia, Xin; Zha, Tianshan] Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China; [Li, Cheng] Chongqing Inst Geol & Mineral Resources, Observ & Res Stn Ecol Restorat Chongqing Typ Min, Minist Nat Resources, Chongqing 401120, Peoples R China
推荐引用方式 GB/T 7714	Guo, Xiaonan,Shang, Guofei,Tian, Yun,et al. Dynamics of Nocturnal Evapotranspiration and Its Biophysical Controls over a Desert Shrubland of Northwest China[J]. 北京林业大学,2021,12(10).
APA	Guo, Xiaonan.,Shang, Guofei.,Tian, Yun.,Jia, Xin.,Zha, Tianshan.,...&Zhang, Xia.(2021).Dynamics of Nocturnal Evapotranspiration and Its Biophysical Controls over a Desert Shrubland of Northwest China.FORESTS,12(10).
MLA	Guo, Xiaonan,et al."Dynamics of Nocturnal Evapotranspiration and Its Biophysical Controls over a Desert Shrubland of Northwest China".FORESTS 12.10(2021).