Spatial and temporal change in the potential evapotranspiration sensitivity to meteorological factors in China (1960-2007)
文献类型：期刊论文
| 作者 | Liu, XM; Liu, CM
|
| 刊名 | JOURNAL OF GEOGRAPHICAL SCIENCES
 |
| 出版日期 | 2012 |
| 卷号 | 22期号:1页码:3-14 |
| 关键词 | Penman-Monteith potential evapotranspiration meteorological factors sensitivity ten drainage systems in China |
| 通讯作者 | Zhang, D(张丹) |
| 英文摘要 | Potential evapotranspiration (E(0)), as an estimate of the evaporative demand of the atmosphere, has been widely studied in the fields of irrigation management, crop water demand and predictions in ungauged basins (PUBs). Analysis of the sensitivity of E(0) to meteorological factors is a basic research on the impact of climate change on water resources, and also is important to the optimal allocation of agricultural water resources. This paper dealt with sensitivity of E(0) over China, which was divided into ten drainage systems, including Songhua River basin, Liaohe River basin, Haihe River basin, Yellow River basin, Yangtze River basin, Pearl River basin, Huaihe River drainage system, Southeast river drainage system, Northwest river drainage system and Southwest river drainage system. In addition, the calculation method of global radiation in Penman-Monteith formula was improved by optimization, and the sensitivities of Penman-Monteith potential evapotranspiration to the daily maximum temperature (S(Tmax)), daily minimum temperature (S(Tmin)), wind speed (S(U2)), global radiation (S(Rs)) and vapor pressure (S(VP)) were calculated and analyzed based on the long-term meteorological data from 653 meteorological stations in China during the period 1960-2007. Results show that: (1) the correlation coefficient between E(0) and pan evaporation increased from 0.61 to 0.75. E(0) had the decline trends in eight of ten drainage systems in China, which indicates that "pan evaporation paradox" commonly exists in China from 1960 to 2007. (2) Spatially, T(max) was the most sensitive factor in Haihe River basin, Yellow River basin, Huaihe River drainage system, Yangtze River basin, Pearl River basin and Southeast river drainage system, and VP was the most sensitive factor in Songhua River Basin, Liaohe River basin, Northwest river drainage system while R(s) was the most sensitive factor in Southwest river drainage system. For the nation-wide average, the most sensitive factor was VP, followed by T(max), R(s), U(2) and T(min). In addition, the changes in sensitivity coefficients had a certain correlation with elevation. (3) Temporally, the maximum values of S(Tmax) and S(Rs) occurred in July, while the maximum values of S(Tmin), S(VP) and S(U2) occurred in January. Moreover, trend analysis indicates that S(Tmax) had decline trends, while S(Tmin), S(U2), S(Rs) and S(VP) had increasing trends. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China 40971023;National Basic Research Program of China 2010CB428406 |
| 语种 | 英语 |
| 公开日期 | 2012-07-06 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/25447]  |
| 专题 | 地理科学与资源研究所_研究生部 |
| 推荐引用方式 GB/T 7714 | Liu, XM,Liu, CM. Spatial and temporal change in the potential evapotranspiration sensitivity to meteorological factors in China (1960-2007)[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2012,22(1):3-14. |
| APA | Liu, XM,&Liu, CM.(2012).Spatial and temporal change in the potential evapotranspiration sensitivity to meteorological factors in China (1960-2007).JOURNAL OF GEOGRAPHICAL SCIENCES,22(1),3-14. |
| MLA | Liu, XM,et al."Spatial and temporal change in the potential evapotranspiration sensitivity to meteorological factors in China (1960-2007)".JOURNAL OF GEOGRAPHICAL SCIENCES 22.1(2012):3-14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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