Study on crop coefficient of vegetation in cold and high-altitude regions based on lysimeter measurements
文献类型：期刊论文
| 作者 | Qu, Liuyan2,3; Li, Runjie1; Jia, Shaofeng4; Gao, Zhanyi3; Chen, Haorui3 |
| 刊名 | IRRIGATION SCIENCE
 |
| 出版日期 | 2026-03-18 |
| 卷号 | 44期号:3页码:64 |
| 关键词 | Crop coefficient Lysimeter Evapotranspiration Machine Learning Sanjiangyuan |
| ISSN号 | 0342-7188 |
| DOI | 10.1007/s00271-026-01097-2 |
| 产权排序 | 4 |
| 文献子类 | Article |
| 英文摘要 | Crop coefficient (Kc) is a critical parameter for estimating the actual evapotranspiration of vegetation. To fill the gap in vegetation Kc in the Sanjiangyuan Region and improve their accuracy, this study determined monthly Kc for various typical vegetation types using lysimeter-measured data combined with the FAO-56 single crop coefficient method. A machine learning model was employed to simulate actual evapotranspiration for different vegetation types. Based on a long-term series of actual and potential evapotranspiration, monthly crop coefficient ranges were established for multiple vegetation types. The results indicate that similar vegetation types on the same underlying surface can share a standard crop coefficient for evapotranspiration estimation. In contrast, the same vegetation type on different surfaces exhibits slight variations in Kc. Kc should be considered as reference intervals rather than fixed values, as monthly Kc values vary across different vegetation types. The mean values of the measured Kc of alpine grasslands (including alpine desert steppe, alpine steppe, and alpine meadow) during the growing season (from May to October) were 0.55, 0.75, 1.03, 1.11, 0.98, and 0.64, respectively. For alpine shrubs, the mean values of their measured Kc in the growing season were 0.76, 0.90, 1.11, 1.00, 1.74, and 1.13, respectively. |
| URL标识 | 查看原文 |
| WOS关键词 | EVAPOTRANSPIRATION |
| WOS研究方向 | Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001717808700001 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221192]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 通讯作者 | Gao, Zhanyi |
| 作者单位 | 1.Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Peoples R China; 2.Qinghai Normal Univ, Sch Geog Sci, Xining 810008, Peoples R China; 3.China Inst Water Resources & Hydropower Res, State Key Lab Water Cycle & Water Secur River Basi, Beijing 100048, Peoples R China; 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qu, Liuyan,Li, Runjie,Jia, Shaofeng,et al. Study on crop coefficient of vegetation in cold and high-altitude regions based on lysimeter measurements[J]. IRRIGATION SCIENCE,2026,44(3):64. |
| APA | Qu, Liuyan,Li, Runjie,Jia, Shaofeng,Gao, Zhanyi,&Chen, Haorui.(2026).Study on crop coefficient of vegetation in cold and high-altitude regions based on lysimeter measurements.IRRIGATION SCIENCE,44(3),64. |
| MLA | Qu, Liuyan,et al."Study on crop coefficient of vegetation in cold and high-altitude regions based on lysimeter measurements".IRRIGATION SCIENCE 44.3(2026):64. |
入库方式： OAI收割
来源：地理科学与资源研究所
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