| 近50年秦岭山地降水时空变化特征研究 |
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| 引用本文： | 张善红.近50年秦岭山地降水时空变化特征研究[J].商洛师范专科学校学报,2014(2):62-66. |
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| 作者姓名： | 张善红 |
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| 作者单位： | 商洛学院城乡规划与建筑工程学院,陕西商洛726000 |
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| 基金项目： | 国家科技基础专项重点项目（2007FY110800） |
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| 摘 要： | 以秦岭山地39个气象站点1960—2009年近50年来的降水资料为基础，分析了秦岭山地降水的时空变化特征，结果表明：秦岭山地近50年来年降水量呈减少趋势，年降水量变化的倾向率是-8．6mm／10a，但近15年来降水量呈递增趋势：在空间上，秦岭年降水量从南向北逐渐减少，秦岭山地除商南降水量呈略微上升趋势外，其余地区的降水呈略微下降趋势，秦岭山地各代际800mm等降水量线发生明显移动，与标准时期相比，20世纪60年代和80年代北移0．02°、0．48°，其余年代略有南移。在0．18°范围内。
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| 关 键 词： | 秦岭山地 降水 变化特征 800 mm等降水量线 |
Spatial and Temporal Variation of Precipitation in Qinling Mountains in the Last 50 Years |
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| ZHANG Shan-hong.Spatial and Temporal Variation of Precipitation in Qinling Mountains in the Last 50 Years[J].Journal of Shangluo Teachers College,2014(2):62-66. |
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| Authors: | ZHANG Shan-hong |
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| Institution: | ZHANG Shan-hong (College of Urban, Rural Planning and Architectural Engineering, Shangluo University, Shangluo 726000, Shaanxi) |
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| Abstract: | Spatial and temporal variation of precipitation of Qinling Mountains were analyzed based on rainfall data from 1960 to 2009 collected from 39 meteorological stations in Qinling Mountains. Results showed that：precipitation presented a decreasing trend over the last 50 years,and the precipitation tendency rate was-8.6mm/10a, however, in the last 15 years, the average precipitation increased slightly. In space, the average precipitation in Qinling Mountains reduced gradually from south to north; precipitation in other areas showed a decreasing tendency except Shangnan;eaeh generation 800 mm equipluve of Qinling Mountains migration obviously, compared with the reference period, in the 1960s and 1980s, they moved to north 0.02°and 0.48°respectively,while in the other ages sligtly moved to south by 0.18°. |
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| Keywords: | Qinling Mountains precipitation variation characteristics 800mm equipluve |
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