| 玛曲高寒草甸地表辐射与能量收支的季节变化 |
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| 引用本文： | 王少影,张宇,吕世华,尚伦宇,张少波.玛曲高寒草甸地表辐射与能量收支的季节变化[J].高原气象,2012,31(3):605-614. |
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| 作者姓名： | 王少影 张宇 吕世华 尚伦宇 张少波 |
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| 作者单位： | 1. 中国科学院寒区旱区环境与工程研究所,中国科学院寒旱区陆面过程与气候变化重点实验室,甘肃兰州730000 中国科学院研究生院,北京100049
2. 中国科学院寒区旱区环境与工程研究所,中国科学院寒旱区陆面过程与气候变化重点实验室,甘肃兰州730000 |
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| 基金项目： | 国家重点基础研究发展计划项目，国家自然科学基金项目 |
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| 摘 要： | 利用中国科学院黄河源区气候与环境综合观测研究站2010年观测资料,分析了玛曲高寒草甸地表辐射与能量收支的季节特征。结果表明:玛曲高寒草甸入射太阳辐射与净辐射年累积量分别为6482.2和2577.2MJ.m-2.a-1;年平均地表反照率为0.25,生长期平均地表反照率为0.22;全年入射太阳辐射的38%转换为地表长波辐射,明显高于低海拔地区的草地;净辐射占入射太阳辐射的38%,低于全球以及低海拔地区的草地;在冻结期,感热通量占净辐射的93%,在生长期,潜热通量占净辐射的62%。
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| 关 键 词： | 高寒草甸 辐射收支 能量收支 |
Seasonal Variation Characteristics of Radiation and Energy Budgets in Alpine Meadow Ecosystem in Maqu Grassland |
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| WANG Shao-ying,-,ZHANG Yu,L Shi-hua,SHANG Lun-yu,ZHANG Shao-bo.Seasonal Variation Characteristics of Radiation and Energy Budgets in Alpine Meadow Ecosystem in Maqu Grassland[J].Plateau Meteorology,2012,31(3):605-614. |
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| Authors: | WANG Shao-ying - ZHANG Yu L Shi-hua SHANG Lun-yu ZHANG Shao-bo |
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| Institution: | 1-2 (1.Key Laboratory of Land Surface and Climate Change in Cold and Arid Regions,Cold and Arid Regions,Environmental and Engineering Research Institute,Chinese Academy of Sciences,730000 Lanzhou,China; 2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Using the observed data atMaqu station in 2010,the characteristicsof the surface radiation and energy budgets were analyzed.The solar radiation and net radiation averaged 6482.2and 2577.2 MJ·m~-2·a~-1,respectively.The albedo averaged 0.25 annually,with a slightly low value of 0.22 in the growing season from May to October.The annual solar radiation lost 38% as longwave radiation,which was higher than values reported for lowland grasslands.The ratio of net radiation to solar radiation was at an average of 0.38,however,which was much lower than that for lowland grasslands.More than 93% of net radiation was converted to sensible heat flux during the frozen soil period,and more than 62% of net radiation was converted to latent heat flux during growth period. |
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| Keywords: | Alpine Meadow Radiation Budget Energy Budget |
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