Assessing evapotranspiration and single crop coefficients of common crops by eddy covariance measurement at multi-sites
文献类型：期刊论文
| 作者 | Liu, Zhaofei1,2; Jiang, Dong1,2; Yan, Denghua3; Hao, Mengmeng1,2; Zhang, Xingxing1,2 |
| 刊名 | EUROPEAN JOURNAL OF AGRONOMY
 |
| 出版日期 | 2025-09-01 |
| 卷号 | 170页码:127762 |
| 关键词 | Evapotranspiration Crop coefficient Eddy covariance Complementary relationship Maize Winter wheat |
| ISSN号 | 1161-0301 |
| DOI | 10.1016/j.eja.2025.127762 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | The assessment of evapotranspiration and crop coefficients is essential for water-saving irrigation. The evapotranspiration and single-crop coefficient (Kc) values of 22 crops were identified based on eddy covariance measurements at 50 flux sites. The mean Kc values of all crops during the entire growing season ranged from 0.71 to 1.07, with most crops (18/22) within 0.77-0.98. Ten crops were with multiple sites and growing seasons data. The rice, soybean, and spring barley Kc values showed concentration distributions among sites and within growing seasons at the same site. Significant variations in Kc values for maize, winter wheat, and sugar beets were found among the sites or within the different growing seasons at the same site, with maximum differences ranging from 17 % to 32 %. The variations in winter rapeseed and winter barley Kc values among the sites were greater than those within different growing seasons at the same site. Contrary results were observed for alfalfa and potatoes. Large variations in the sugar beet and winter rapeseed Kc values were observed within growing seasons at each growth stage, with standard deviations >= 0.11. The proportion of inconsistencies between the local and FAO-tabulated Kc values was 32 % (16/50) and was 30 % (3/10), 25 % (5/20), and 40 % (8/20) during the early, middle, and late growth stages, respectively. Overall, the local Kc values of common crops must be improved based on future studies. The Kc values identified in this study provide valuable references for researchers who require precise Kc values for evapotranspiration assessment. |
| URL标识 | 查看原文 |
| WOS关键词 | COMPLEMENTARY PRINCIPLE ; HEAT-FLUX ; EVAPORATION ; WATER ; ACCURACY ; VINEYARD ; ENERGY ; SOIL |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001533214900001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215365]  |
| 专题 | 资源利用与环境修复重点实验室_外文论文 |
| 通讯作者 | Jiang, Dong; Zhang, Xingxing |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liu, Zhaofei,Jiang, Dong,Yan, Denghua,et al. Assessing evapotranspiration and single crop coefficients of common crops by eddy covariance measurement at multi-sites[J]. EUROPEAN JOURNAL OF AGRONOMY,2025,170:127762. |
| APA | Liu, Zhaofei,Jiang, Dong,Yan, Denghua,Hao, Mengmeng,&Zhang, Xingxing.(2025).Assessing evapotranspiration and single crop coefficients of common crops by eddy covariance measurement at multi-sites.EUROPEAN JOURNAL OF AGRONOMY,170,127762. |
| MLA | Liu, Zhaofei,et al."Assessing evapotranspiration and single crop coefficients of common crops by eddy covariance measurement at multi-sites".EUROPEAN JOURNAL OF AGRONOMY 170(2025):127762. |
入库方式： OAI收割
来源：地理科学与资源研究所
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