| 中国中纬度地带气候暖干化对水资源的影响 |
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| 引用本文： | 施雅风,范建华.中国中纬度地带气候暖干化对水资源的影响[J].水科学进展,1991,2(4):217-223. |
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| 作者姓名： | 施雅风 范建华 |
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| 作者单位： | 1.中国科学院兰州冰川冻土研究所; |
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| 摘 要： | 中纬度中国,主要指35°N至50°N之间的半湿润至干旱荒漠地带,占中国面积的60%以上,自上世纪末小冰期结束以来,具有鲜明的波动性的增暖和变干趋势,特别是60年代以来更为剧烈。在其影响下,冰川与湖泊萎缩,地表径流减少,地下水位下降,水质恶化,干旱频率和旱灾的严重性都在增加。 在全球变暖的大趋势下,干旱化在近期可能还会继续。但如CO2及其它微量气体的温室效应导致下世纪升温2℃或更多.重现全新世暖期情景,则中纬度中国会变得湿润起来。而在气候剧变的过渡时期,水旱灾害会进一步增加。
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| 关 键 词： | 气候 水 资源 半湿润地区 中国 |
| 收稿时间： | 1991-05-29 |
Glimatic Warming and Drying Trend and its Impact on Water Resources in Mid Latitude China |
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| Shi Ya-feng,Fan Jian-hua.Glimatic Warming and Drying Trend and its Impact on Water Resources in Mid Latitude China[J].Advances in Water Science,1991,2(4):217-223. |
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| Authors: | Shi Ya-feng Fan Jian-hua |
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| Affiliation: | 1.Lanzhou Institute of Glaciology and Geocryology, Chinese Academy Sciences;2.Nanjing Institute of Geography and Limnology |
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| Abstract: | The area of mid latitude China, mainly the zones from semi-humid to ariddesert extending from 35°N to 50°N, accounts for 60% or more of the area of China. Since the end of the Little Ice Age, climatic change has shown obviously warming and drying trend. Especially, more stronger change has occurred since 1960's. Under the impact of climatic change, such phenomenon as shrinkage of glaciers and lakes,decrease of runoff, descent of groundwater table and increase of drought frequency and extent etc,have been caused.With a tendency of global warming, climatic drying would continue. However,if the greenhouse effect could cause the increase of the temperature by 2℃ or morein the next century, the climate of mid latitude China could get humid. |
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