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Seasonal variation and meteorological control of CO2 flux in a hilly plantation in the mountain areas of North China
Huang Hui1; Zhang Jinsong1; Meng Ping1; Fu Yuling2; Zheng Ning1; Gao Jun1
2011-04-01
Source PublicationACTA METEOROLOGICA SINICA
Volume25Issue:2Pages:238-248
AbstractThe carbon cycle of terrestrial ecosystems is an important scientific issue in global climate change research. Plantation forest plays an important role in terrestrial carbon budget in China. In this study, eddy covariance flux data measured at Xiaolangdi forest ecosystem research station (XLD) in 2007 and 2008 are used to analyze the seasonal variation and meteorological control of CO2 flux in a 30-yr-old mixed plantation. The plantation forest mainly consists of Quercus variabilis, Platycladus orientalis, and Robinia pseudoacacia. The results show that the seasonal variations of net ecosystem exchange of CO2 (NEE), gross primary production (GPP), and ecosystem respiration (R (e)) display single-peak curves. The maximum of carbon sequestration appears during May and June each year. The relative contribution of carbon release from ecosystem respiration to GPP varied slightly between 2007 and 2008. The relationship between NEE and photosynthetic active radiation (Q (p)) accords with the rectangular hyperbola model on diurnal scale, and shows a good linear correlation on monthly scale. The ecosystem photosynthetic parameters: the maximum photosynthetic rate (P (max)), the ecosystem photosynthetic photonyield (alpha), and the daytime ecosystem respiration (R (d)) exhibit seasonal variations. P (max) reaches the maximum in August each year, with small interannual difference. The interannual differences of alpha and R (d) are obvious, which is attributed to the changes of meteorological factors, such as solar radiation, vapor pressure deficit (D), precipitation, etc. Parameters R (e), GPP, and NEP (net ecosystem production) have obvious exponential relations with temperature on monthly scale. There is a hysteresis in the response of GPP and NEP to temperature, i.e., the carbon sequestration is not the maximum when the temperature reaches the peak value. The Q (10) values were 1.37 and 1.45 in 2007 and 2008, respectively. On monthly scale, R (e), GPP, and NEE increase as D increases, but rise slowly and even decrease when D is higher than 1.5 kPa.
SubtypeArticle
KeywordHilly Area Of North China Plantation Eddy Covariance Co2 Flux Meteorological Factors
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedMeteorology & Atmospheric Sciences
WOS KeywordCARBON-DIOXIDE EXCHANGE ; WATER-VAPOR EXCHANGE ; ECOSYSTEM RESPIRATION ; STOMATAL CONDUCTANCE ; SOIL RESPIRATION ; EUROPEAN FORESTS ; ENERGY FLUXES ; BEECH FOREST ; LONG-TERM ; TEMPERATURE
Indexed BySCI
Language英语
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000290319400010
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68126
Collection中国科学院地理科学与资源研究所
Corresponding AuthorMeng Ping
Affiliation1.CAF, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, State Forestry Adm, Beijing 100091, Peoples R China
2.CAS, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Huang Hui,Zhang Jinsong,Meng Ping,et al. Seasonal variation and meteorological control of CO2 flux in a hilly plantation in the mountain areas of North China[J]. ACTA METEOROLOGICA SINICA,2011,25(2):238-248.
APA Huang Hui,Zhang Jinsong,Meng Ping,Fu Yuling,Zheng Ning,&Gao Jun.(2011).Seasonal variation and meteorological control of CO2 flux in a hilly plantation in the mountain areas of North China.ACTA METEOROLOGICA SINICA,25(2),238-248.
MLA Huang Hui,et al."Seasonal variation and meteorological control of CO2 flux in a hilly plantation in the mountain areas of North China".ACTA METEOROLOGICA SINICA 25.2(2011):238-248.
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