青藏高原高寒灌丛CO2通量日和月变化特征
徐世晓1; 赵新全1; 李英年1; 赵亮1; 于贵瑞2; 孙晓敏2; 曹广民1
2005
Source Publication科学通报
ISSN0023-074X
Volume050Issue:005Pages:481
Abstract采用涡度相关法对青藏高原高寒灌丛CO2通量进行连续观测的结果表明,青藏高原高寒灌丛CO2通量呈明显的日和月变化特征.就日变化而言,暖季(7月)CO2通量峰值出现在12:00左右(-1.19gCO2/(m^2h)^-1),08:00-19:00时CO2净吸收,而20:00-07:00为CO2净排放;冷季(1月)CO2通量变化振幅极小,除11:00~17:00时少量的CO2净排放以外(0.11gCO2/(m^2·h)^-1左右),其余时段CO2通量接近于零.从月变化来看,6~9月为CO2净吸收阶段,8月CO2净吸收最大,6-9月CO2净吸收的总达673gCO2/m^2;1-5月及10~12月为CO2净排放,共排放446gCO2/m^2,4月CO2净排放最大.全年CO2通量核算表明,无放牧条件下青藏高原高寒灌丛是显著的CO2汇,全年CO2净吸收量达227g CO/m^2。
Language英语
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/116562
Collection生态系统网络观测与模拟院重点实验室_生态系统综合研究中心
Affiliation1.中国科学院西北高原生物研究所
2.中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
徐世晓,赵新全,李英年,等. 青藏高原高寒灌丛CO2通量日和月变化特征[J]. 科学通报,2005,050(005):481.
APA 徐世晓.,赵新全.,李英年.,赵亮.,于贵瑞.,...&曹广民.(2005).青藏高原高寒灌丛CO2通量日和月变化特征.科学通报,050(005),481.
MLA 徐世晓,et al."青藏高原高寒灌丛CO2通量日和月变化特征".科学通报 050.005(2005):481.
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