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| 祁连山海北高寒草甸地区UV-B的气候变化特征 | |
| 引用本文： | 李英年,杜明远,唐艳鸿,赵亮,王勤学,赵新全,古松.祁连山海北高寒草甸地区UV-B的气候变化特征[J].干旱区资源与环境,2006,20(3):79-84. |
| 作者姓名： | 李英年 杜明远 唐艳鸿 赵亮 王勤学 赵新全 古松 |
| 作者单位： | 1. 中国科学院西北高原生物研究所,西宁,810001 2. 日本农业环境技术研究所,筑波,3058604 3. 日本国立环境研究所,筑波,30500534 |
| 基金项目： | 中国科学院方向性项目 , 科技部科研项目 , 中-日合作项目 , 中日合作亚太地区环境创新战略计划(APEIS) |
| 摘 要： | 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6387.436 MJ.m-2和35.981 MJ.m-2。 |
| 关 键 词： | 高寒草甸 UV-B 气候变化 特征 |
| 文章编号： | 1003-7578（2006）03-079-06 |
| 收稿时间： | 2005-02-11 |
| 修稿时间： | 2005年2月11日 |
UV-B Changing Characteristics of Alpine Meadow Area at Haibei Station in Qiliang Mountain |
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| LI Ying-nian,DU Ming-yuan,TANG Yanhong,ZHAO Liang,WANG Qin-xue,ZHAO Xin-quan,GU Song.UV-B Changing Characteristics of Alpine Meadow Area at Haibei Station in Qiliang Mountain[J].Journal of Arid Land Resources and Environment,2006,20(3):79-84. | |
| Authors: | LI Ying-nian DU Ming-yuan TANG Yanhong ZHAO Liang WANG Qin-xue ZHAO Xin-quan GU Song |
| Abstract: | 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 instantaneouspeak is near 10W·m~(-2),daily gross is 0.204MJ·m~(-2);and significant positive correlation exists between daily and annual change of UVB 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~(-2)and 35.981 MJ·m~(-2)of alpine meadow area at Harbei Station,respectively. |
| Keywords: | alpine meadow UV-B climate change characteristics |
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