Evapotranspiration Components Dynamic of Highland Barley Using PML ET Product in Tibet
文献类型：期刊论文
| 作者 | Chen, Jilong1 ; Tan, Haiyun2; Ji, Yongyue1,3; Tang, Qingqing1,3; Yan, Lingyun1,3; Chen, Qiao1; Tan, Daming2
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| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 13期号:23页码:16 |
| 关键词 | evapotranspiration components temporal variation meteorological variables PML V2 |
| DOI | 10.3390/rs13234884 |
| 通讯作者 | Tan, Daming(tdm@taaas.org) |
| 英文摘要 | Highland barley is the unique germplasm resource and dominant crop in Tibet with low-level precipitation and a severe shortage of available water resources. Understanding the characteristics and dynamics of evapotranspiration (ET) components (vegetation transpiration (Ec), soil evaporation (Es), and canopy interception evaporation (Ei)) of highland barley can help better optimize water management practices. The seasonal and interannual variations in ET components of highland barley were investigated using the PML-V2 ET product during 2001-2020. The results suggested that Es was the most important ET component and accounted for 77% of total ET for highland barley in Tibet. ET components varied obviously over the altitude, Es, and Es/ET ratio; a decreasing trend was observed with the increase in altitude from 3500 m to 3800 m and then this changed to an increasing trend until reaching the altitude of 4100 m, while Ec, Ei, and their ratios presented an opposite changing pattern to that of Es. Seasonal variation in daily ET components of highland barley displayed a parabolic pattern, peaked in August, while the temporal distributions differed considerably among different ET component ratios. The seasonal variations in ET components were correlated significantly with air temperature, relative humidity, and precipitation, while ET components ratios were more influenced by the environment, irrigation practice, and management rather than meteorological variables. Es and its ratio in highland barley decreased significantly during 2001-2020, while the Ec/ET ratio generally showed an opposite trend to the Es/ET ratio, and Ei and its ratio presented an insignificantly decreasing trend. The interannual variations in ET components were not correlated significantly with meteorological variables, while Ei was more influenced by meteorological variables, especially the precipitation characteristics. |
| 资助项目 | Youth Innovation Promotion Association[2018417] ; Youth Innovation Promotion Association[2021385] ; National Natural Science Foundation of China[41901130] ; National Natural Science Foundation of China[42061015] ; Chongqing Science and Technology[cstc2021jcyj-msxmX0187] ; Chongqing Municipal Bureau of Water Resources[5000002021BF40001] ; Institute of Agricultural Resources and Environment ; Tibet Academy of Agricultural and Animal Husbandry Science[2020ZZKT-01] ; Rikaze City Science and Technology Plan Project[RKZ2020KJ01] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000735132000001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/14946]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Tan, Daming |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China 2.Tibet Acad Agr Anim Husb Sci, Inst Agr Resources & Environm, Lhasa 850000, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Jilong,Tan, Haiyun,Ji, Yongyue,et al. Evapotranspiration Components Dynamic of Highland Barley Using PML ET Product in Tibet[J]. REMOTE SENSING,2021,13(23):16. |
| APA | Chen, Jilong.,Tan, Haiyun.,Ji, Yongyue.,Tang, Qingqing.,Yan, Lingyun.,...&Tan, Daming.(2021).Evapotranspiration Components Dynamic of Highland Barley Using PML ET Product in Tibet.REMOTE SENSING,13(23),16. |
| MLA | Chen, Jilong,et al."Evapotranspiration Components Dynamic of Highland Barley Using PML ET Product in Tibet".REMOTE SENSING 13.23(2021):16. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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