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Soil warming effect on net ecosystem exchange of carbon dioxide during the transition from winter carbon source to spring carbon sink in a temperate urban lawn
Zhou, Xiaoping; Wang, Xiaoke; Tong, Lei; Zhang, Hongxing; Lu, Fei; Zheng, Feixiang; Hou, Peiqiang; Song, Wenzhi; Ouyang, Zhiyun
2012
Source PublicationEnvironmental Sciences & Ecology
ISSN1001-0742
Volume24Issue:12Pages:2104-2112
AbstractThe significant warming in urban environment caused by the combined effects of global warming and heat island has stimulated widely development of urban vegetations. However, it is less known of the climate feedback of urban lawn in warmed environment. Soil warming effect on net ecosystem exchange (NEE) of carbon dioxide during the transition period from winter to spring was investigated in a temperate urban lawn in Beijing, China. The NEE (negative for uptake) under soil warming treatment (temperature was about 5 degrees C higher than the ambient treatment as a control) was -0.71 mu mol/(m(2).sec), the ecosytem was a CO2 sink under soil warming treatment, the lawn ecosystem under the control was a CO2 source (0.13 mu mol/(m(2).sec)), indicating that the lawn ecosystem would provide a negative feedback to global warming. There was no significant effect of soil warming on nocturnal NEE (i.e., ecosystem respiration), although the soil temperature sensitivity (Q(10)) of ecosystem respiration under soil warming treatment was 3.86, much lower than that in the control (7.03). The CO2 uptake was significantly increased by soil warming treatment that was attributed to about 100% increase of alpha (apparent quantum yield) and A(max) (maximum rate of photosynthesis). Our results indicated that the response of photosynthesis in urban lawn is much more sensitive to global warming than respiration in the transition period.
Department城市与区域生态国家重点实验室
KeywordSoil Warming Urban Lawn Co2 Uptake Ecosystem Respiration
WOS IDWOS:000313389300009
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/7995
Collection城市与区域生态国家重点实验室
Recommended Citation
GB/T 7714
Zhou, Xiaoping,Wang, Xiaoke,Tong, Lei,et al. Soil warming effect on net ecosystem exchange of carbon dioxide during the transition from winter carbon source to spring carbon sink in a temperate urban lawn[J]. Environmental Sciences & Ecology,2012,24(12):2104-2112.
APA Zhou, Xiaoping.,Wang, Xiaoke.,Tong, Lei.,Zhang, Hongxing.,Lu, Fei.,...&Ouyang, Zhiyun.(2012).Soil warming effect on net ecosystem exchange of carbon dioxide during the transition from winter carbon source to spring carbon sink in a temperate urban lawn.Environmental Sciences & Ecology,24(12),2104-2112.
MLA Zhou, Xiaoping,et al."Soil warming effect on net ecosystem exchange of carbon dioxide during the transition from winter carbon source to spring carbon sink in a temperate urban lawn".Environmental Sciences & Ecology 24.12(2012):2104-2112.
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