| 农业活动对中国区域“蒸发悖论”规律的影响 |
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| 引用本文： | 韩松俊,王少丽,杨大文.农业活动对中国区域“蒸发悖论”规律的影响[J].农业工程,2010(10):1-8. |
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| 作者姓名： | 韩松俊 王少丽 杨大文 |
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| 作者单位： | 1．中国水利水电科学研究院水利研究所，北京 100048； 2．国家节水灌溉北京工程技术研究中心，北京 100048;1．中国水利水电科学研究院水利研究所，北京 100048； 2．国家节水灌溉北京工程技术研究中心，北京 100048;3．清华大学水利水电工程系 水沙科学与水利水电工程国家重点实验室，北京 100084 |
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| 基金项目： | 国家自然科学基金（50909097，50639040）；国家973计划课题资助项目（2006CB403405） |
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| 摘 要： | 1960－2001年间，中国范围内气温增加显著、蒸发皿蒸发量呈下降趋势，存在“蒸发悖论”现象。该文根据中国土地利用数据划分的251个受农业活动影响较小地区和165个受农业活动影响显著地区气象站的气象数据，计算了1960－2001年两类站点蒸发皿蒸发量和气温的变化趋势，分析了不同农业活动影响地区“蒸发悖论”规律的差异及影响因素。结果显示受农业活动影响显著地区的气象站气温升高的站点比例和平均趋势弱于受农业活动影响较小地区的气象站点，而蒸发皿蒸发量下降的站点比例和平均趋势明显强于受农业活动影响较小地区的气象站点，且在比较干旱的北方地区差异更为显著。由此可以推断灌溉等农业活动对区域“蒸发悖论”规律具有显著影响。
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| 关 键 词： | 气温，蒸发皿蒸发量，气候变化，农业活动，蒸发悖论 |
Agricultural influences on evaporation paradox in China |
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| Han Songjun,Wang Shaoli and Yang Dawen.Agricultural influences on evaporation paradox in China[J].Agricultural Engineering,2010(10):1-8. |
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| Authors: | Han Songjun Wang Shaoli and Yang Dawen |
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| Abstract: | The air temperature increased and the pan evaporation decreased from 1960 to 2001 in China, and the evaporation paradox exist. Using the data from 251 meteorological stations in regions without significant agricultural influences and from 165 meteorological stations in regions with significant agricultural influences divided by land use, the trends of pan evaporations and air temperature changes from 1960 to 2001 were evaluated contrastively. The differences of evaporation paradox in regions with different agricultural influences in China were analyzed. The increasing trends of air temperature over meteorological stations in regions with significant agricultural influences were weaker than that in regions without significant agricultural influences, while the pan evaporation appeared decreasing trends, and the differences were more obvious in arid or semi-arid areas in North China. The differences of evaporation paradox over different agricultural regions were influenced by agricultural activities such as irrigation, and should be taken into account. |
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| Keywords: | air temperature pan evaporation climate change agricultural influence evaporation paradox |
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