| 岷江上游季风期水文要素趋势分析 |
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| 引用本文： | 白晓华,刘伟龙.岷江上游季风期水文要素趋势分析[J].中国科技信息,2009(15):21-23. |
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| 作者姓名： | 白晓华 刘伟龙 |
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| 作者单位： | 1. 云南省环境科学研究院,650034
2. 中国科学院成都山地研究所 |
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| 基金项目： | 中国科学院西部之光博士资助项目 |
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| 摘 要： | 岷江上游是长江的源头之一,其水文规律的长期趋势对长江的水资源开发与保护具有重要意义.本文综合利用Mann-kendall及线形回归方法研究了岷江上游1971～2000年的不同季风时期的径流量趋势,以及相应降水、气温、蒸发及下垫面植被覆盖等的变化趋势.结果显示岷江上游的径流量在近30年来无显著增加或减少趋势,其主要产流区的降水、气温、蒸发及下垫面也无显著变化趋势存在.这可能说明,处于青藏高原边缘的岷江上游,因其独特的山地地貌和大气环流特点,其水文过程并未对全球气温升高作出显著响应.
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| 关 键 词： | 气候变化 岷江上游 径流量 趋势分析 |
Trend of hydrological factors in upstream of Minjing river druing the past 30 years |
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| Bai Xiaohua,Liu Weilong.Trend of hydrological factors in upstream of Minjing river druing the past 30 years[J].CHINA SCIENCE AND TECHNOLOGY INFORMATION,2009(15):21-23. |
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| Authors: | Bai Xiaohua Liu Weilong |
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| Abstract: | Both Sen' s slope method and linear regression were used to analyze trend of monsoon hydrological factors of Jiangaheba gauge station from 1971 to 2000. The runoffs during different monsoon period all represents statistically no trend, and precipitation, dish evaporation, air temperature, and duration of snow-cover of four weather stations in the up basin were also represent no trend. And, multiple linear regressions were used to identify the major contributed area and meteorological factors for runoff in Jiangsheba. The results indicate no statistical trend in the scale of upstream hydrology of Minjiang River, and no trend for main meteorological factor in major contributed area. The phenomena imply hydrological process in upstream of Minjiang river was not affected by globe warming, and Tibetan Plateau nearby controlling local atmospheric general circulation may be contributed to this. |
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| Keywords: | climate change upstream of Minjiang River runoff trend analyses |
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