Arid
DOI10.1111/j.1365-2486.2006.01299.x
Mature semiarid chaparral ecosystems can be a significant sink for atmospheric carbon dioxide
Luo, Hongyan; Oechel, Walter C.; Hastings, Steven J.; Zulueta, Rommel; Qian, Yonghai; Kwon, Hyojung
通讯作者Luo, Hongyan
来源期刊GLOBAL CHANGE BIOLOGY
ISSN1354-1013
出版年2007
卷号13期号:2页码:386-396
英文摘要

Carbon flux in arid and semiarid area shrublands, especially in old-growth shrub ecosystems, has been rarely studied using eddy covariance techniques. In this study, eddy covariance measurements over a 100-year old-growth chamise-dominated chaparral shrub ecosystem were conducted for 7 years from 1996 to 2003. A carbon sink, from -96 to -155 g C m(-2) yr(-1), was determined under normal weather conditions, while a weak sink of -18 g C m(-2) yr(-1) and a strong source of 207 g C m(-2) yr(-1) were observed as a consequence of a severe drought. The annual sink strength of carbon in the 7-year measurement period was -52 g C m(-2) yr(-1). The results from our study indicate that, in contrast to previous thought, the old-growth chaparral shrub ecosystem can be a significant sink of carbon under normal weather conditions and, therefore, be an important component of the global carbon budget.


英文关键词arid and semiarid area carbon balance chaparral ecosystem eddy covariance evapotranspiration (ET) net ecosystem exchange (NEE) old-growth shrub southern California
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000244003700005
WOS关键词INDUCED AGE GRADIENT ; CO2 EXCHANGE ; WATER-VAPOR ; TERRESTRIAL ECOSYSTEMS ; SOUTHERN-CALIFORNIA ; SEASONAL-VARIATION ; TUNDRA ECOSYSTEMS ; FLUX MEASUREMENTS ; ARCTIC TUNDRA ; BEECH FOREST
WOS类目Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/154387
作者单位(1)San Diego State Univ, Dept Biol, Global Change Res Grp, San Diego, CA 92182 USA
推荐引用方式
GB/T 7714
Luo, Hongyan,Oechel, Walter C.,Hastings, Steven J.,et al. Mature semiarid chaparral ecosystems can be a significant sink for atmospheric carbon dioxide[J],2007,13(2):386-396.
APA Luo, Hongyan,Oechel, Walter C.,Hastings, Steven J.,Zulueta, Rommel,Qian, Yonghai,&Kwon, Hyojung.(2007).Mature semiarid chaparral ecosystems can be a significant sink for atmospheric carbon dioxide.GLOBAL CHANGE BIOLOGY,13(2),386-396.
MLA Luo, Hongyan,et al."Mature semiarid chaparral ecosystems can be a significant sink for atmospheric carbon dioxide".GLOBAL CHANGE BIOLOGY 13.2(2007):386-396.
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