Trends in evapotranspiration and their responses to climate change and vegetation greening over the upper reaches of the Yellow River Basin
文献类型：期刊论文
| 作者 | Xu, Shiqin1,2; Yu, Zhongbo1,2; Yang, Chuanguo1,2; Ji, Xibin3; Zhang, Ke1,2 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2018-12-15 |
| 卷号 | 263页码:118-129 |
| ISSN号 | 0168-1923 |
| 关键词 | Evapotranspiration Complimentary relationship Asymmetric climate warming Vegetation greening Cold mountain region |
| DOI | 10.1016/j.agrformet.2018.08.010 |
| 通讯作者 | Yu, Zhongbo(zyu@hhu.edu.cn) |
| 英文摘要 | This study comprehensively analyzed long-term (1960-2014) variations of potential and actual evapotranspiration (ET) and quantified their inter-annual and seasonal sensitivity and attribution to climate and vegetation growth changes in the upper reaches of the Yellow River Basin (UYRB). Satellite-derived vegetation greenness and in situ measured hydrometeorological datasets were used. Average annual reference evapotranspiration (ET0) showed significant decreasing trend (p < 0.05) by 0.32 mm year(-1) over the past 55 years. Results obtained from recovered stationary series and sensitivity analyses showed that reduction of wind speed was the major driving force for decreasing trends in annual and seasonal ET0. Water budget-derived actual evapotranspiration (ETa) increased dramatically during the study period, whereas potential evapotranspiration (ETp) calculated from Penman equation and pan evaporation (ETpan) decreased significantly, suggesting the existence of evaporation paradox over the UYRB. ETa and ETp or ETpan exhibited complementary behavior, while the complementary relationship was asymmetric. During the period 1982-2014, vegetation greening occurred in most areas (65.6%) of the UYRB and was mediated by elevation. Interestingly, non-uniform climate warming imposed opposite impacts on vegetation growth, namely inter-annual and seasonal NDVI was stimulated by daytime temperature but suppressed by nighttime temperature. Furthermore, the positive impacts imposed by daytime temperature on NDVI was much larger in spring than in autumn and summer. Large-scale coherent vegetation greening would be the primary factor affecting inter-annual ETa in comparison with climate factors. These results help in deep understanding the hydrological response to climate change in cold mountain regions. |
| 收录类别 | SCI |
| WOS关键词 | TIBETAN PLATEAU ; NORTHERN-HEMISPHERE ; PAN EVAPORATION ; SPOT-VEGETATION ; NDVI DATA ; AVHRR ; CYCLE ; DAYTIME ; MODIS ; CONSISTENCY |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS类目 | Agronomy ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000449236500011 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558276 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yu, Zhongbo |
| 作者单位 | 1.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing, Jiangsu, Peoples R China 2.Hohai Univ, Coll Hydrol & Water Resources, Nanjing, Jiangsu, Peoples R China 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Linze Inland River Basin Res Stn, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Shiqin,Yu, Zhongbo,Yang, Chuanguo,et al. Trends in evapotranspiration and their responses to climate change and vegetation greening over the upper reaches of the Yellow River Basin[J]. AGRICULTURAL AND FOREST METEOROLOGY,2018,263:118-129. |
| APA | Xu, Shiqin,Yu, Zhongbo,Yang, Chuanguo,Ji, Xibin,&Zhang, Ke.(2018).Trends in evapotranspiration and their responses to climate change and vegetation greening over the upper reaches of the Yellow River Basin.AGRICULTURAL AND FOREST METEOROLOGY,263,118-129. |
| MLA | Xu, Shiqin,et al."Trends in evapotranspiration and their responses to climate change and vegetation greening over the upper reaches of the Yellow River Basin".AGRICULTURAL AND FOREST METEOROLOGY 263(2018):118-129. |
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来源：寒区旱区环境与工程研究所
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