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首页> 外文期刊>Journal of geographical sciences >Observed precipitation trends in the Yangtze river catchment from 1951 to 2002
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Observed precipitation trends in the Yangtze river catchment from 1951 to 2002

机译：1951年至2002年长江流域的观测降水趋势

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摘要

The monthly, seasonal, and annual precipitation trends in the Yangtze river catchment have been detected through analysis of 51 meteorological stations' data between 1950-2002 provided by National Meteorological Administration. Results reveal that: 1) Summer precipitation in the Yangtze river catchment shows significant increasing tendency. The Poyanghu lake basin, Dongtinghu lake basin and Taihu lake basin in the middle and lower reaches are the places showing significant positive trends. Summer precipitation in the middle and lower reaches experienced an abrupt change in the year 1992; 2) The monthly precipitation in months just adjoining to summer shows decreasing tendency in the Yangtze river catchment. The upper and middle reaches in Jialingjiang river basin and Hanshui river basin are the places showing significant negative trends; 3) Extreme precipitation events show an increasing tendency in most places, especially in the middle and lower reaches of the Yangtze river catchment.
机译：通过分析国家气象局提供的1950-2002年间51个气象站的数据，发现了长江流域的月度，季节和年度降水趋势。结果表明：1）长江流域夏季降水呈明显增加趋势。中下游lower阳湖流域，洞庭湖流域和太湖流域呈明显的积极趋势。 1992年中下游夏季降水急剧变化。 2）临近夏季的几个月中，每月的降水量呈下降趋势。嘉陵江流域和汉水流域的上游和中游呈明显的负趋势。 3）在大多数地方，特别是在长江流域中下游，极端降水事件呈上升趋势。

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