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

	Actual evapotranspiration of subalpine meadows in the Qilian Mountains, Northwest China
	Gao Yunfei; Zhao Chuanyan; Ashiq Muhammad W; Wang Qingtao; Rong Zhanlei; Liu Junjie; Mao Yahua; Guo Zhaoxia; Wang Wenbin
来源期刊	Journal of Arid Land
ISSN	1674-6767
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 (ET_0) in 2014 in subalpine meadows of the Qilian Mountains, Northwest China. Meanwhile, actual ET (ET_c) was also investigated by the eddy covariance (EC) system. Results indicated that ET_c estimated by the EC System was 583 mm, lower than ET_0 (923 mm) estimated by the FAO Penman-Monteith model in 2014. Moreover, ET_0 began to increase in March and reached the peak value in August and then declined in September, however, ET_c began to increase from April and reached the peak value in July, and then declined in August. Total ET_c and ET_0 values during the growing season (from May to September) were 441 and 666 mm, respectively, which accounted for 75.73% of annual cumulative ET_c and 72.34% of annual cumulative ET_0, respectively. A crop coefficient (k_c) was also estimated for calculating the ET_c, 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 ET_c value estimated by the data of k_c and ET_0 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
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:6533716
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336141
作者单位	Gao Yunfei, School of Life Sciences, Lanzhou University, State Key Laboratory of Grassland and Agro-Ecosystems, Lanzhou, Gansu 730000, China.; Wang Qingtao, School of Life Sciences, Lanzhou University, State Key Laboratory of Grassland and Agro-Ecosystems, Lanzhou, Gansu 730000, China.; Rong Zhanlei, School of Life Sciences, Lanzhou University, State Key Laboratory of Grassland and Agro-Ecosystems, Lanzhou, Gansu 730000, China.; Liu Junjie, School of Life Sciences, Lanzhou University, State Key Laboratory of Grassland and Agro-Ecosystems, Lanzhou, Gansu 730000, China.; Wang Wenbin, School of Life Sciences, Lanzhou University, State Key Laboratory of Grassland and Agro-Ecosystems, Lanzhou, Gansu 730000, China.; Zhao Chuanyan, College of Pastoral Agriculture Science and Technology, Lanzhou University, State Key Laboratory of Grassland and Agro-Ecosystems, Lanzhou, Gansu 730000, China.; Mao Yahua, College of Pastoral Agriculture Science and Technology, Lanzhou University, State Key Laboratory of Grassland an...
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],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.