| 参考作物腾发量与蒸发皿蒸发量的变化特征及变化原因分析 |
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| 引用本文： | 谢平,陈晓宏,刘丙军,刘敏超.参考作物腾发量与蒸发皿蒸发量的变化特征及变化原因分析[J].灌溉排水学报,2008,27(5):14-17. |
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| 作者姓名： | 谢平 陈晓宏 刘丙军 刘敏超 |
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| 作者单位： | [1]中山大学水资源与环境系,广州510275 [2]广东海洋大学农学院资源与环境系,广东湛江524088 [3]广东省近岸海洋工程重点实验室,广州510275 |
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| 基金项目： | 国家自然科学基金，广东省自然学基金，广东海洋大学校科研和教改项目 |
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| 摘 要： | 利用东江流域1961～2003年的气象资料,对参考作物腾发量和蒸发皿蒸发量的变化特征及变化原因进行分析,结果表明:参考作物腾发量与蒸发皿蒸发量都有减少的趋势,参考作物腾发量减少的趋势不显著,蒸发皿蒸发量减少的趋势显著,蒸发皿系数有显著增加的趋势;参考作物腾发量、蒸发皿蒸发量在全流域的空间分布相似,都是南部大北部小,蒸发皿系数的空间分布是北部大南部小;平均温度、日照时数、风速与参考作物腾发量、蒸发皿蒸发量的偏相关系数都为正,相对湿度都为负;日照时数对参考作物腾发量、蒸发皿蒸发量的影响程度都最大,且远大于其它因子,这种效应在夏季表现更突出,温度对参考作物腾发量的影响程度比蒸发皿蒸发量大;参考作物腾发量与蒸发皿蒸发量都有减少趋势的原因首先是日照时数的减小,再是风速的减小;参考作物腾发量与蒸发皿蒸的趋势显著性有差异的原因是温度的增加对参考作物腾发量的影响程度比蒸发皿蒸发量大.
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| 关 键 词： | 蒸发量 参考作物腾发量 蒸发皿蒸发量 变化特征 变化原因 东江流域 |
Changes of Reference Evapotranspiration and Pan Evaporation In Dongjiang River Basin |
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| XIE Ping,CHEN Xiao-hong,LIU Bing-jun,LIU Min-chao.Changes of Reference Evapotranspiration and Pan Evaporation In Dongjiang River Basin[J].Journal of Irrigation and Drainage,2008,27(5):14-17. |
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| Authors: | XIE Ping CHEN Xiao-hong LIU Bing-jun LIU Min-chao |
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| Institution: | XIE Ping1,2,CHEN Xiao-hong1,3,LIU Bing-jun1,LIU Min-chao2(1.Department of Water Resources , Environment,Sun Yat-sen University,Guangzhou 510275,China,2.Agricultural College of Guangdong Ocean University,Zhanjiang 524088,3.The Key Laboratory of Nearshore Ocean Engineering in Guangdong Provice,China) |
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| Abstract: | The change of reference evapotranspiration and pan evaporation and its causes over Dongjiang river basin are analyzed from 1961 to 2003.The results show that there is a decreasing trend in both the reference evapotranspiration and pan evaporation,the decrease of reference evapotranspiration is not significant,the decrease of pan evaporation is significant,there is significant increasing trend in the pan coefficient.The spatial distribution of reference evapotranspiration and pan evapotranspiration are rough... |
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| Keywords: | evaporation reference evapotranspiration pan evaporation change characteristic the causes of change Dongjiang river basin |
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