干旱区生态环境知识资源中心(Arid): Actual evapotranspiration of subalpine meadows in the Qilian Mountains, Northwest China

Arid

DOI	10.1007/s40333-019-0012-y
	Actual evapotranspiration of subalpine meadows in the Qilian Mountains, Northwest China
	Gao, Yunfei 1; Zhao, Chuanyan 2; Ashiq, Muhammad W.3; Wang, Qingtao 1; Rong, Zhanlei 1; Liu, Junjie 1; Mao, Yahua 2; Guo, Zhaoxia 2; Wang, Wenbin 1
通讯作者	Zhao, Chuanyan
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2019
卷号	11 期号:3 页码:371-384
英文摘要	As a main component in water balance, evapotranspiration (ET) is of great importance for water saving, especially in arid and semi-arid areas. In this study, the FAO (Food and Agriculture Organization) Penman-Monteith model was used to estimate the magnitude and temporal dynamics of reference evapotranspiration (ET0) in 2014 in subalpine meadows of the Qilian Mountains, Northwest China. Meanwhile, actual ET (ETc) was also investigated by the eddy covariance (EC) system. Results indicated that ETc estimated by the EC System was 583 mm, lower than ET0 (923 mm) estimated by the FAO Penman-Monteith model in 2014. Moreover, ET0 began to increase in March and reached the peak value in August and then declined in September, however, ETc began to increase from April and reached the peak value in July, and then declined in August. Total ETc and ET0 values during the growing season (from May to September) were 441 and 666 mm, respectively, which accounted for 75.73% of annual cumulative ETc and 72.34% of annual cumulative ET0, respectively. A crop coefficient (k(c)) was also estimated for calculating the ETc, and average value of k(c) during the growing season was 0.81 (ranging from 0.45 to 1.16). Air temperature (T-a), wind speed (u), net radiation (R-n) and soil temperature (T-s) at the depth of 5 cm and aboveground biomass were critical factors for affecting k(c), furthermore, a daily empirical k(c) equation including these main driving factors was developed. Our result demonstrated that the ETc value estimated by the data of k(c) and ET0 was validated and consistent with the growing season data in 2015 and 2016.
英文关键词	actual evapotranspiration reference evapotranspiration crop coefficient meteorological factors biotic factors
类型	Article
语种	英语
国家	Peoples R China ; Canada
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000474563200005
WOS关键词	TEMPERATE DESERT STEPPE ; ENERGY-BALANCE CLOSURE ; NET ECOSYSTEM EXCHANGE ; CROP COEFFICIENT ; EDDY COVARIANCE ; PENMAN-MONTEITH ; INNER-MONGOLIA ; WATER-USE ; FLUXES ; RIVER
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
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/2XILL650/216788
作者单位	1.Lanzhou Univ, Sch Life Sci, State Key Lab Grassland & Agroecosyst, Lanzhou 730000, Gansu, Peoples R China; 2.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland & Agroecosyst, Lanzhou 730000, Gansu, Peoples R China; 3.Minist Nat Resources & Forestry, 5520 Hwy 101 E, South Porcupine, ON P0N1H0, Canada
推荐引用方式 GB/T 7714	Gao, Yunfei,Zhao, Chuanyan,Ashiq, Muhammad W.,et al. Actual evapotranspiration of subalpine meadows in the Qilian Mountains, Northwest China[J]. 兰州大学,2019,11(3):371-384.
APA	Gao, Yunfei.,Zhao, Chuanyan.,Ashiq, Muhammad W..,Wang, Qingtao.,Rong, Zhanlei.,...&Wang, Wenbin.(2019).Actual evapotranspiration of subalpine meadows in the Qilian Mountains, Northwest China.JOURNAL OF ARID LAND,11(3),371-384.
MLA	Gao, Yunfei,et al."Actual evapotranspiration of subalpine meadows in the Qilian Mountains, Northwest China".JOURNAL OF ARID LAND 11.3(2019):371-384.