Spatial and temporal change in the potential evapotranspiration sensitivity to meteorological factors in China (1960–2007)
Spatial and temporal change in the potential evapotranspiration sensitivity to meteorological factors in China (1960–2007)
复制标题
中国潜在蒸散量对气象因素敏感性的时空变化（1960—2007年）
DOI：
10.1007/s11442-012-0907-4
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发表时间：
2012-01
影响因子：
4.9
通讯作者：
C. Zhao
中科院分区：
文献类型：
--
作者：
C. Liu;D. Zhang;X. Liu;C. Zhao
潜在蒸散量（E0）作为对大气蒸发需求的估算，在灌溉管理、作物需水量和无资料流域（PUBs）预测等领域得到了广泛的研究。E0对气象因子的敏感性分析是研究气候变化对水资源影响的基础性研究，对农业水资源优化配置具有重要意义。本文将我国分为松花江流域、辽河流域、海河流域、黄河流域、长江流域、珠江流域、淮河流域、东南江流域、西北江流域和西南江流域等10个流域系统，对E0的敏感性进行了研究。此外，对Penman-Monteith公式中总辐射的计算方法进行了优化改进，研究了Penman-Monteith潜在蒸散量对日最高温度（STmax）、日最低温度（STmin）、风速（SU 2）、根据长时程大气环流资料，计算并分析了大气总辐射（SRs）和水汽压（SVP），中国653个气象站1960-2007年的长期气象资料。结果表明：（1）E0与蒸发皿蒸发量的相关系数从0.61增加到0.75，中国10个水系中有8个水系的E0呈下降趋势，表明1960 - 2007年中国普遍存在蒸发皿蒸发悖论。(2)在空间上，Tmax是海河流域、黄河流域、淮河流域、长江流域、珠江流域和东南江流域最敏感的因子，VP是松花江流域、辽河流域和西北江流域最敏感的因子，Rs是西南江流域最敏感的因子。对于全国平均值，最敏感的因素是VP，其次是Tmax、Rs、U2和Tmin。此外，敏感系数的变化与海拔高度有一定的相关性。(3)在时间上，STmax和SR的最大值出现在7月，而STmin、SV和SU 2的最大值出现在1月。趋势分析表明，STmax呈下降趋势，而STmin、SU 2、SR和SVP呈上升趋势。
Potential evapotranspiration (E0), 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 ofE0to 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 ofE0over 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 (STmax), daily minimum temperature (STmin), wind speed (SU2), global radiation (SRs) and vapor pressure (SVP) 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 betweenE0and pan evaporation increased from 0.61 to 0.75.E0had 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,Tmaxwas 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, andVPwas the most sensitive factor in Songhua River Basin, Liaohe River basin, Northwest river drainage system whileRswas the most sensitive factor in Southwest river drainage system. For the nation-wide average, the most sensitive factor wasVP, followed byTmax,Rs,U2andTmin. In addition, the changes in sensitivity coefficients had a certain correlation with elevation. (3) Temporally, the maximum values ofSTmaxandSRsoccurred in July, while the maximum values ofSTmin,SVPandSU2occurred in January. Moreover, trend analysis indicates thatSTmaxhad decline trends, whileSTmin,SU2,SRsandSVPhad increasing trends.
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DOI：
--
发表时间：
2009
期刊：
Resources Science
影响因子：
--
作者：
Cao Yingjie
通讯作者：
Cao Yingjie
影响因子：
5.2
作者：
Roderick, Michael L.;Rotstayn, Leon D.;Hobbins, Michael T.
通讯作者：
Hobbins, Michael T.
影响因子：
4.4
作者：
郑红星;刘小莽等
通讯作者：
刘小莽等
DOI：
10.11867/j.issn.1001-8166.2008.11.1185
发表时间：
2008-11
期刊：
Advances in Earth Science
影响因子：
--
作者：
Q. Xinfa;L. Changming;Pan Ao-da;Zeng Yan
通讯作者：
Q. Xinfa;L. Changming;Pan Ao-da;Zeng Yan
影响因子：
2.6
作者：
Chang-Wu Liu;Yan Zeng
通讯作者：
Chang-Wu Liu;Yan Zeng