| 1960-2000年中国蒸发皿蒸发量的气候变化特征 |
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| 引用本文： | 曾燕,邱新法,刘昌明,潘敖大,高苹.1960-2000年中国蒸发皿蒸发量的气候变化特征[J].水科学进展,2007,18(3):311-318. |
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| 作者姓名： | 曾燕 邱新法 刘昌明 潘敖大 高苹 |
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| 作者单位： | 1.中国科学院南京地理与湖泊研究所, 江苏, 南京, 210008; |
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| 基金项目： | 中国气象局气候变化专项基金 |
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| 摘 要： | 利用中国664个气象站1960-2000年20 cm口径蒸发皿资料,借助地理信息系统Arc GIS,分析了中国蒸发皿蒸发量的气候变化趋势.结果表明,就中国平均而言,1960-2000年中国蒸发皿蒸发量呈明显下降趋势,年蒸发皿蒸发量在20世纪80～90年代较60～70年代下降了99.8 mm,下降幅度为5.8%;不同季节对照发现,蒸发皿蒸发量的下降主要表现在春季、夏季和冬季,秋季不明显;对蒸发皿蒸发量气候变化的空间分析表明,年蒸发皿蒸发量的下降主要表现在华东和中南地区;对蒸发皿蒸发量下降的原因分析表明,日照百分率下降从而导致太阳总辐射的下降可能是近年来蒸发皿蒸发量下降的主要原因.
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| 关 键 词： | 气候变化 地理信息系统 蒸发皿蒸发量 中国 |
| 文章编号： | 1001-6791（2007）03-0311-08 |
| 收稿时间： | 2006-01-09 |
| 修稿时间： | 2006-01-092006-03-20 |
Changes of pan evaporation in China in 1960-2000 |
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| ZENG Yan,QIU Xin-fa,LIU Chang-ming,PAN Ao-da,Gao Ping.Changes of pan evaporation in China in 1960-2000[J].Advances in Water Science,2007,18(3):311-318. |
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| Authors: | ZENG Yan QIU Xin-fa LIU Chang-ming PAN Ao-da Gao Ping |
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| Institution: | 1.Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, China;2.Jiangsu Institute of Meteorlogical Sciences, Nanjing 210008, China;3.School of Remote Sensing, Nanjing University of Information Science and Technology, Nanjing 210044, China;4.Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China |
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| Abstract: | Based on the observational data of 664 meteorological stations in China from 1960 to 2000 and combined with the geographic information system(GIS) of ArcGIS,the spatial and temporal distributions and their trends for pan evaporation in China are investigated in this study.The results indicate that,from 1960 to 2000,the rate of pan evaporation steadily decrease in China.Compared with the period of 1960s to 1970s,the rate of annual pan evaporation during 1980s to 1990s decreases by 99.8 mm or 5.8%.The seasonal analyses show that the decrease of pan evaporation occurs mainly in spring,summer and winter.The spatial distribution of the change rate shows that the decrease of pan evaporation mainly occurs in East and Central South of China.Further analysis shows that the decrease of pan evaporation is closely related to the reduction of the solar irradiance resulting from the sun-shine percentage decrease. |
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| Keywords: | climate change geographic information system pan evaporation China |
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