Actual and Reference Evapotranspiration in a Cornfield in the Zhangye Oasis, Northwestern China
文献类型：期刊论文
| 作者 | Gu, Lianglei1; Hu, Zeyong1; Yao, Jimin2; Sun, Genhou1 |
| 刊名 | WATER
 |
| 出版日期 | 2017-07-01 |
| 卷号 | 9期号:7页码:16 |
| 关键词 | actual evapotranspiration reference evapotranspiration crop coefficient K-c eddy covariance method FAO Penman-Monteith method Zhangye oasis Heihe river basin |
| ISSN号 | 2073-4441 |
| DOI | 10.3390/w9070499 |
| 通讯作者 | Gu, Lianglei(gull@lzb.ac.cn) |
| 英文摘要 | Evapotranspiration (ET) is an important component of the surface energy balance and water cycle, especially in arid and semiarid regions. The characteristics of the actual evapotranspiration (ETa), which was calculated using the eddy covariance method, and the reference evapotranspiration (ET0), which was estimated using the Food and Agriculture Organisation (FAO) Penman-Monteith method, were analysed. This work focussed on the seasonal variations in evapotranspiration and crop coefficient (K-c) above the heterogeneous canopy of an arid oasis ecosystem in a cornfield of the Zhangye oasis in northwestern China. The results showed that in 2008, the total net radiation (R-n) was 2457.73 MJ.m(-2) and that the rainfall was 117 mm. The average wind velocity, air temperature, and specific humidity, which were observed 2 m above the ground surface, were 1.23 m.s(-1), 7.07 degrees C, and 3.66 g.kg(-1), respectively. The total ETa and ET0 were 654.69 mm and 1039.92 mm, respectively; thus, the ET0 was higher than the ETa. The difference between the ET0 and ETa was high in summer and autumn, and low in winter and spring. The ETa was greatly influenced by irrigation events, whereas the ET0 was not influenced by irrigation. The ETa and ET0 were both greatly influenced by meteorological elements. The K-c values were less than 0.5 outside of the maize-growing stage and greater than 0.5 during the entire maize-growing stage (from 20 April to 22 September 2008). The K-c values were 0.63, 0.75, 0.78, 0.76, 0.61 and 0.71 at the seedling, shooting, heading, filling, and maturity stages and the entire growth stage, respectively. |
| 收录类别 | SCI |
| WOS关键词 | PENMAN-MONTEITH EQUATION ; HEIHE RIVER-BASIN ; ENERGY-BALANCE ; CROP COEFFICIENT ; TIBETAN PLATEAU ; SPRING WHEAT ; EVAPO-TRANSPIRATION ; WATER-USE ; CLIMATE ; MAIZE |
| WOS研究方向 | Water Resources |
| WOS类目 | Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000406681700050 |
| 出版者 | MDPI AG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557676 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Gu, Lianglei |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Nagqu Stn Plateau Climate & Environm NPCE, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, SKLCS, Cryosphere Res Stn Qinghai Xizang Plateau CRS, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gu, Lianglei,Hu, Zeyong,Yao, Jimin,et al. Actual and Reference Evapotranspiration in a Cornfield in the Zhangye Oasis, Northwestern China[J]. WATER,2017,9(7):16. |
| APA | Gu, Lianglei,Hu, Zeyong,Yao, Jimin,&Sun, Genhou.(2017).Actual and Reference Evapotranspiration in a Cornfield in the Zhangye Oasis, Northwestern China.WATER,9(7),16. |
| MLA | Gu, Lianglei,et al."Actual and Reference Evapotranspiration in a Cornfield in the Zhangye Oasis, Northwestern China".WATER 9.7(2017):16. |
入库方式： iSwitch采集
来源：寒区旱区环境与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。