| 引用本文: | 王加虎,郝振纯,姜彤,施雅风,曾涛.气温增加对长江流域参照黑散发的影响研究.湖泊科学,2003,15(Z1):277-288. DOI:10.18307/2003.sup36 |
| WANG Jiahu,HAO Zhenchun,JIANG Tong,SHI Yafeng,ZENG Tao.Study on Reference Evaporation in the Yangtze River Catchment under Increasing Temperature. J. Lake Sci.2003,15(Z1):277-288. DOI:10.18307/2003.sup36 |
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| 摘要: |
| 本文以联合国粮农组织推荐的改进彭曼-蒙特斯公式为基础,通过日气温计算年蒸发总量并验证,用典型年预测全流域年平均气温增加时,参照蒸散发的变化情况。研究表明:长江流域的年蒸发量将随年平均气温的上升而增加;上游增幅大于中下游,各月增幅相近;气温增幅的年内分布不容忽视,考虑到年内气温不等量增长后的计算结果相对更为合理。研究结果表明:当流域年平均气温升高1℃时,流域上、中下游参照蒸散发分别将增加5%和4%.研究中未考虑气温日较差的变化. |
| 关键词: 气温增加 参照蒸散发 长江流域 |
| DOI：10.18307/2003.sup36 |
| 分类号: |
| 基金项目:国家重点基础研究发展规划研宂项目(G199043400),中国科学院知识创新工程重要方向项目WZCX3-SW-331)和中国科学院南京地理与湖泊研究所知识创新工程所长专项基金(S220007)联合资助 |
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| Study on Reference Evaporation in the Yangtze River Catchment under Increasing Temperature |
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WANG Jiahu1, HAO Zhenchun1, JIANG Tong2, SHI Yafeng2, ZENG Tao1
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1.Water Resources Development & Utilization Laboratory, Hehai University, Nanjing 210098, P. R. China;2.Nanjing Institute of Geography and Limnology, CAS, Narying 210008, P. R. China
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| Abstract: |
| A method based on Penman-Monteith equation recommended by FAO is established in this paper to calculate total reference evaporation of year through daily temperature. After being validated, the method is used to get the change of Yangtze River's reference evaporation under increasing temperature. The study shows:Reference year-evaporation will enhance together with temperature. The relative enhancement in upper reaches of the Yangtze river is bigger than in middle and lower reaches of the Yangtze. The relative enhancement is similar in different month. The distributing of temperature enhancement in a year shouldn't be omitted and the result under this circs is more accurate. The relative enhancement of reference evaporation by 1℃ is about 5% in upper reaches of the Yangtze river and 4% in middle and lower reaches. |
| Key words: Increasing temperature reference evaporation Yangtze River |
