Alp-valley and elevation effects on the reference evapotranspiration and the dominant climate controls in Red River Basin, China: Insights from geographical differentiation
文献类型：期刊论文
| 作者 | Chen, Junxu3; Zhang, Jihui; Peng, Jiabin; Zou, Lei1; Fan, Yunjiang; Yang, Furong; Hu, Zhiwen4 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 620页码:129397 |
| 关键词 | Reference evapotranspiration Sensitivity analysis Alp-valley effects Climate variables Geographical differentiation Red River Basin |
| DOI | 10.1016/j.jhydrol.2023.129397 |
| 文献子类 | Article |
| 英文摘要 | Complicated topography can drastically affect the geographical distribution of evaporation, runoff production, water cycle, and water security guarantee. However, whether the elevation and Alp-valley have differentiated effects on basin evaporation and handle the change with constant variables is still being determined. This manuscript calculates reference evapotranspiration (ET0) of the Red River Basin with a typical Alp-valley and elevation gradient from 1960 to 2021. Then at the scales of the whole basin, both sides of the main Alp (western of Ailao mountain (WAL) and eastern of Ailao mountain (EAL)), the mainstream valley (Yuanjiang valley (YJV)), the spatial-temporal distribution pattern of ET0 and its sensitivity of climate variables are depicted from the insights of barrier-corridor and elevation effects. The results indicate that ET0 grows at a rate of 27.77 mm per decade throughout the Red River Basin, China (RRBC), gradually declines from northwest to southeast, and increases with increasing elevation. The barrier effect of the Ailao Mountains within the RRBC alters the elevation distribution pattern of ET0 on both sides of the mountain. In contrast, the corridor effect along the YJV causes the ET0 increases with the depth of the valley. Accordingly, the aridity index increases with rising elevation resulting in drier climatic conditions in the north of the RRBC, and suffers a significant influence from Alp-valley topography resulting in wet WAL, dry EAL and drier YJV. The topography plays an impact on ET0 through the climatic control variables. Solar radiation (Rs) has the highest impact on ET0, followed in descending order by relative humidity (RH), air temperature (T) and wind speed (U). With the elevation increases, Rs and T reduce the effect on ET0, whereas RH increases its effect. Also, the barrier effect changed the dominant factors: Rs and RH control the ET0 on WAL and EAL, respectively, while the corridor effect enhances the role of T and U. Moreover, the schematic diagram of the ET0's change with elevation gradient and Alp-valley, and its climate controls is deduced. This research can help us comprehend the spatial differentiation of ET0 in complicated topographical areas, as well as uncover its dynamic mechanisms under elevation and Alp-valley effects. |
| WOS关键词 | REFERENCE CROP EVAPOTRANSPIRATION ; POTENTIAL EVAPOTRANSPIRATION ; METEOROLOGICAL FACTORS ; DRIVING FACTORS ; SENSITIVITY ; LAKE ; IMPLEMENTATION ; IMPACTS ; TREND |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| WOS记录号 | WOS:000972676500001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200849]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 作者单位 | 1.Yunnan Univ, Int Joint Res Ctr Karstol, Kunming 650091, Peoples R China 2.Power China Kunming Engn Co Ltd, Kunming 650001, Peoples R China 3.Yunnan Univ, Coll Earth Sci, Kunming 650500, 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 | Chen, Junxu,Zhang, Jihui,Peng, Jiabin,et al. Alp-valley and elevation effects on the reference evapotranspiration and the dominant climate controls in Red River Basin, China: Insights from geographical differentiation[J]. JOURNAL OF HYDROLOGY,2023,620:129397. |
| APA | Chen, Junxu.,Zhang, Jihui.,Peng, Jiabin.,Zou, Lei.,Fan, Yunjiang.,...&Hu, Zhiwen.(2023).Alp-valley and elevation effects on the reference evapotranspiration and the dominant climate controls in Red River Basin, China: Insights from geographical differentiation.JOURNAL OF HYDROLOGY,620,129397. |
| MLA | Chen, Junxu,et al."Alp-valley and elevation effects on the reference evapotranspiration and the dominant climate controls in Red River Basin, China: Insights from geographical differentiation".JOURNAL OF HYDROLOGY 620(2023):129397. |
入库方式： OAI收割
来源：地理科学与资源研究所
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