| 黄河源区地表湿润指数及与气象因素的敏感性分析 |
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| 引用本文： | 侯文菊,李英年. 黄河源区地表湿润指数及与气象因素的敏感性分析[J]. 冰川冻土, 2010, 32(6) |
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| 作者姓名： | 侯文菊 李英年 |
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| 作者单位： | 青海省气象局,果洛州气象台,青海,果洛,814000;中国科学院,西北高原生物研究所,青海,西宁,810001 |
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| 基金项目： | 中国科学院西部行动计划项目 |
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| 摘 要： | 应用Penman-Monteith模型计算了黄河源区地表潜在蒸散,分析了区域1961-2009年49 a来地表湿润指数的变化特征和趋势,并进行影响地表湿润指数的气象因素敏感性分析.结果表明:49 a来黄河源区年地表湿润指数呈减小趋势,其中20世纪60年代相对湿冷,70年代半湿冷,80年代为弱暖湿型,90年代暖干化明显.但进入21世纪初,特别是2003年以来,黄河源区降水增多,湿润指数上升,表现为暖湿型的气候特征.不同季节湿润指数变化略有不同,比较而言,49 a来地表湿润指数在冬春季呈增加趋势,夏秋季呈减小.湿润指数对降水量、日照时数和相对湿度的响应最为敏感.
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| 关 键 词： | 黄河源区 地表湿润指数 气候变化 敏感性分析 |
Soil Surface Humidity Index and Sensitivity Analysis of the Climate Factors That Affect It in the Yellow River Source Regions |
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| HOU Wen-ju,LI Ying-nian. Soil Surface Humidity Index and Sensitivity Analysis of the Climate Factors That Affect It in the Yellow River Source Regions[J]. Journal of Glaciology and Geocryology, 2010, 32(6) |
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| Authors: | HOU Wen-ju LI Ying-nian |
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| Affiliation: | HOU Wen-ju1,LI Ying-nian2(1.Meteorological Station of Guoluo Prefecture,Golog Qinghai 814000,China,2.Northwest Institution of Plateau Biology,Chinese Academy of Sciences,Xining Qinghai 810001,China) |
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| Abstract: | The potential evapotranspiration in Yellow River source regions was calculated by using the model of Penman-Monteith.The variations and changing tendency of the regional surface humidity index since 1961 were analyzed,together with a sensitivity analysis of the meteorological factors that affect the index.It is found that surface humidity index has had a decreasing tendency since 1961,with a relative wet and cold period in the 1960s,a semi-wet and cold period in the 1970s,a minor warm and humid period in th... |
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| Keywords: | Yellow River source regions surface humidity index climate change sensitivity analysis |
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