Seasonal Variations of Short Wave and Long Wave Radiation in Layer of Soil and Atmosphere of Alpine Wetland at North Area of Qinghai

doi:10.11733/j.issn.1007-0435.2007.03.017

›› 2007, Vol. 15 ›› Issue (3): 283-289.DOI: 10.11733/j.issn.1007-0435.2007.03.017

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Seasonal Variations of Short Wave and Long Wave Radiation in Layer of Soil and Atmosphere of Alpine Wetland at North Area of Qinghai

LIU An-hua^1,2, LI Ying-nian¹, ZHANG Fa-wei^1,2, XUE Xiao-juan^1,2

1. Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai Province 810001, China;
2. Graduate School, Chinese Academy of Science, Beijing 100049, China

Received:2006-12-27 Revised:2007-03-20 Online:2007-06-15 Published:2007-06-15

海北高寒湿地地气长、短波辐射的季节变化特征

刘安花^1,2, 李英年¹, 张法伟^1,2, 薛晓娟^1,2

1. 中国科学院西北高原生物研究所, 青海, 西宁, 810001;
2. 中国科学院研究生院, 北京, 100049

通讯作者: 李英年,E-mail:ynli@nwipb.ac.cn
作者简介:刘安花(1979- ),女,硕士研究生,主要从事植物生态研究
基金资助:
中国科学院知识创新工程重大项目(KZCX1-SW-01-01A);中日合作“亚太地区环境创新战略计划(APEIS)”项目

Abstract

Abstract: According to the micro-climate data of Haibei alpine wetland of Qinghai in 2004,the short wave and long wave radiation,surface reflectivity(A),and the ratio(η) of photosynthetic active radiation(PAR) to total global solar radiation(DR)were analysised.The results showed that the short wave and long wave had obvious seasonal variation in Haibei alpine wetland.The highest monthly DR occured in April and lowest in December,while PAR maximum appeared in July and lowest in December.Because of the change of soil surface and plant vegetation,surface reflected radiation(UR) and A were higher in January and February,and lower from July to October than other months.The average annual value of A was 0.299 and a mean of 0.172 from May to September.The lowest values for long-wave radiation(DLR),atmospheric inversion radiation(ULR),and net radiation(Rn) were detected in January,while the maximum values of DLR and Rn appeared in June and ULR in August.Surface effective radiation(ELR)had no significant seasonal variation.η had weak seasonal variation;η maximum appeared in July(0.434) and minimum appeared in January(0.316),the average annual value of η was 0.40.

Key words: Alpine wetland, Short wave, Long wave, Seasonal change

摘要： 利用2004年微气象观测资料,分析了海北高寒湿地长、短波辐射以及地表反射率(A)和光合有效辐射(PAR)占太阳总辐射(DR)比例(η)的变化特征。结果表明,海北高寒湿地长、短波辐射均具有明显的季节变化。DR在12月最低,4月最高。PAR在12月最低,7月最高。受下垫面性质影响,反射辐射(UR)和A在1~2月明显大于其他季节,7~10月小,A在植物生长季节的5~9月平均值为0.172,年平均值为0.299。地面长波辐射(DLR)、大气逆辐射(ULR)和净辐射(Rn)的最低值均出现在1月,最大值出现时期则不同,DLR与Rn均出现在6月,而ULR出现在8月。地面有效辐射(ELR)无明显的季节变化。η的季节变化比较弱,7月最高值为0.434,1月最低值为0.316,年平均值为0.40。

关键词: 海北高寒湿地, 短波辐射, 长波辐射, 季节变化特征

CLC Number:

S812.1

LIU An-hua, LI Ying-nian, ZHANG Fa-wei, XUE Xiao-juan. Seasonal Variations of Short Wave and Long Wave Radiation in Layer of Soil and Atmosphere of Alpine Wetland at North Area of Qinghai[J]. , 2007, 15(3): 283-289.

刘安花, 李英年, 张法伟, 薛晓娟. 海北高寒湿地地气长、短波辐射的季节变化特征[J]. , 2007, 15(3): 283-289.

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Seasonal Variations of Short Wave and Long Wave Radiation in Layer of Soil and Atmosphere of Alpine Wetland at North Area of Qinghai

海北高寒湿地地气长、短波辐射的季节变化特征

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