| 2001—2010年青藏高原干湿格局及其影响因素分析 |
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| 引用本文： | 王敏,周才平,吴良,徐兴良,欧阳华.2001—2010年青藏高原干湿格局及其影响因素分析[J].气候变化研究进展,2012(5):11-17. |
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| 作者姓名： | 王敏 周才平 吴良 徐兴良 欧阳华 |
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| 作者单位： | 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室;中国科学院研究生院 |
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| 基金项目： | 国家重点基础研究发展计划(2010CB951704);中国科学院地理科学与资源研究所自主创新项目(200906003-1);科技基础性工作专项(2006FY110200) |
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| 摘 要： | 基于RFE2.0模型和Penman-Monteith模型,采用潜在蒸散降水比分析了2001—2010年青藏高原生长季(5—9月)干湿气候的时空变化格局,并对其影响因素进行了探讨。结果表明:(1)干旱和半干旱区占整个青藏高原区域的67%,主要集中在高原中部及中部以北;(2)2001—2010年有25%的区域在逐渐变干,北部干旱程度总体上在逐渐减轻,南部及东南部有变干倾向;(3)降水是导致高原区域干湿气候空间格局差异的主要因素,高原干湿气候对潜在蒸散变化的敏感性最强。
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| 关 键 词： | 青藏高原 生长季 平均温度 降水 潜在蒸散 干湿格局 |
Aridity Pattern of Tibetan Plateau and Its Influential Factors in 2001-2010 |
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| Wang Min,Zhou Caiping,Wu Liang,Xu Xingliang,Ouyang Hua.Aridity Pattern of Tibetan Plateau and Its Influential Factors in 2001-2010[J].Advances in Climate Change,2012(5):11-17. |
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| Authors: | Wang Min Zhou Caiping Wu Liang Xu Xingliang Ouyang Hua |
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| Institution: | 1 Key Lab of Ecosystem Network Observation and Modeling of CAS,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China;2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | The RFE2.0 model,Penman-Monteith model and the aridity index were applied to evaluate the spatial pattern of dry-wet climate of the Tibetan Plateau in the growing season(May-Sep.) of 2001-2010,and influential factors for aridity pattern were also analyzed.The results show that(1) the arid and semi-arid climate zone mainly in the central and central-north parts of the plateau accounted for 67% of the total area of the Tibetan Plateau;(2) the south and southeast parts of the plateau,accounting for 25% of the total area,showed a drying trend from 2001 to 2010,and overall the degree of aridity in northern part was gradually reduced;(3) precipitation was the dominant factor leading to the regional difference of aridity,and the aridity index was more sensitive to potential evapotranspiration than to mean temperature and precipitation. |
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| Keywords: | Tibetan Plateau growing season mean temperature precipitation potential evapotranspiration aridity pattern |
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