文献类型：期刊文献

中文题名：广东实际蒸散发与潜在蒸散发的关系研究

英文题名：Relationship between Actual Evapotranspiration and Potential Evapotranspiration in Guangdong

作者：范伶俐[1];张光亚[2]

机构：[1]广东海洋大学海洋与气象学院,广东湛江524088;[2]广东海洋大学教师卓越中心,广东湛江524088

年份：2013

卷号：33

期号：3

起止页码：71

中文期刊名：广东海洋大学学报

外文期刊名：Journal of Guangdong Ocean University

收录：CSTPCD

基金：广东海洋大学科研项目(1112189)

语种：中文

中文关键词：实际蒸散发;潜在蒸散发;互补相关;广东省

外文关键词：actual evapotranspiration; potential evapotranspiration; complementary relationship; Guangdong

中文摘要：利用广东86个气象站1961-2008年的观测资料,采用高桥浩一郎经验公式、Penman公式分别计算了广东省6个子区域1961-2008年实际蒸散发(Actual Evapotranspiration)Ea和潜在蒸散发(Potential Evapotranspiration)Ep,并定量化分析了供水条件变化下Ea与Ep的关系,对它们的理论从属性进行了判定。结果表明,广东省年实际蒸散发量远低于潜在蒸散发量,全省平均Ea为791.0 mm/a,Ep为1 034.1 mm/a,多数子区域Ea不足Ep的3/4,Ea的变异性明显高于Ep。随降水量R的增加,粤东沿海、珠三角、粤北、粤中、粤西南5个子区域Ea增加趋势明显,粤东Ea随R的变化趋势不明显;除粤东外,各子区域的Ep与降水量呈显著负相关关系;随着R的增加,全省平均Ea呈明显的增加趋势,Ep则呈明显的下降趋势。通过对降水量R与实际蒸散发Ea、潜在蒸散发Ep的联合回归方程R-E回归系数的T检验,判定粤东沿海、珠三角、粤北、粤中、粤西南5个子区域Ea与R和Ep与R的关系满足理论意义上的完全互补相关;粤东Ea与R和Ep与R关系不明确。

外文摘要：The observation meteorological data were collected from 86 weather stations of Guangdong for 1961-2008.The actual evapotranspiration（Ea） and potential evapotranspiration（Ep） were calculated based on the emprical formula and the Penman formula.The relationship between Eaand Epunder the change of water supply conditions are quantified and compared among the six sub-districts.The results show that： the annual Ea is much lower than the annual Ep,and mean annual Ea values are less than 3/4 of the Ep in most of the sub-districts.The whole province average Ea is 791.0 mm/a and Ep is 1034.1 mm/a.The variability of Ea is more significant than Ep.Ea in five sub-districts such as Guangdong eastern coastal,Pearl River Delta,Northern /Central/ Southwest of Guangdong is positively correlated with the precipitation（R）,but in the East Guangdong,the correlation between Ea and precipitation is not so obvious.The Epshows a significant negative correlation with precipitation except in eastern Guangdong.With precipitation increasing,the whole province annual mean Eashows a obvious increasing trend,while Ep has a downward trend.A joint regression equation（R-E） between E（Ea and Ep） and precipitation（R） is built,and regression coefficient T-test method is used to determine the relationship between R and Ea or Ep,the result showed that the Bouchet complementary relationship theory is confirmed in Guangdong eastern coast,Pearl River Delta,Northern /Central/ Southwest of Guangdong,the relationship between R,Eaand Epis not clear in Eastern Guangdong.