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文摘
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分析祁连山海北高寒草甸地区2002年太阳总辐射（Eg）、UV-B及UV-B占Eg比例的气候变化特征。结果表明：海北站地区UV-B较强，日瞬时最高接近10W·m^-2，日总量最高达0．204MJ·m^-2；日、年变化依Eg的日、年变化具有显著的正相关关系。UV-B与Eg的比值（η），不论是日变化还是年变化表现明显，一日间早晚低，中午高，一年间6月最高，冬季的12月低，与太阳高度角的变化具有一定的正相关关系。年平均η约为0．54％，植物生长期的5～9月约为0．65％。在海北高寒草甸地区Eg和UV-B的年总量分别达6387．436MJ·m^-2和35．981MJ·m^-2。 |
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其他语种文摘
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UV-B changing characteristics and the percentage of UV-B account for Eg were analyzed based on Eg and UV-B data during 2002 at alpine meadow area of Haibei Station among Qiliang Mountain. It is suggested that there are stronger UV-B at Haibei Station area, daily instantaneous peak is near 10W·m^-2 , daily gross is 0. 204MJ· m^-2; and significant positive correlation exists between daily and annual change of UV-B and Eg. The daily and annual changes of rations between UV-B and Eg （η）are obvious, morning and evening higher than that at noontime, and at June it reach the peak and December to rock bottom. Annual mean （ is 0.54% and during growing season （May to September） is 0. 65%, approximately. Annual gross Eg and UV-B are 6387. 436 MJ · m^-2and 35. 981 MJ · m^-2 of alpine meadow area at Harbei Station, respectively. |
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来源
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干旱区资源与环境
,2006,20(3):79-84 【核心库】
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关键词
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高寒草甸
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UV-B
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气候变化
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特征
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地址
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1.
中国科学院西北高原生物研究所, 西宁, 810001
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日本农业环境技术研究所, 筑波, 3058604
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日本国立环境研究所, 筑波
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1003-7578 |
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学科
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地质学 |
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基金
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中国科学院知识创新工程重大项目
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国家973计划
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中国-日本合作项目
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中国-日本合作亚太地区环境创新战略计划（APEIS）项目
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文献收藏号
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CSCD:2345989
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