Interannual and spatial variability of net ecosystem production in forests explained by an integrated physiological indicator in summer

doi:10.1016/j.ecolind.2021.107982

	Interannual and spatial variability of net ecosystem production in forests explained by an integrated physiological indicator in summer
	Liu, Ying 2,3; Wu, Chaoyang 2,3; Liu, Lin 4; Gu, Chengyan 5; Black, T. Andrew 6; Jassal, Rachhpal S.6; Hoertnagl, Lukas 7; Montagnani, Leonardo 1,8; Moyano, Fernando 9; Varlagin, Andrej 10
刊名	ECOLOGICAL INDICATORS
	2021-10-01
卷号	129 页码:11
关键词	Physiology Phenology Forest Flux Net ecosystem production
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2021.107982
通讯作者	Wu, Chaoyang(wucy@igsnrr.ac.cn) ; Liu, Lin(liulin7801@126.com)
英文摘要	Understanding the feedback of ecosystem carbon uptake on climate change at temporal and spatial scales is crucial for developing ecosystem models. Previous studies have focused on the role of spring and autumn phenology in regulating carbon sequestration in forest stands, but few on the impact of physiological status in summer. However, plant accumulated the most carbon in summer compared with spring and autumn, therefore, it is of great significance to explore the role of summer phenological metrics on the variability of carbon sequestration. Using 514 site-years of flux data obtained at 40 FLUXNET sites including three forest ecosystems (i.e. evergreen needleleaf forest (ENF), deciduous broadleaf forest (DBF) and mixed forest (MF)) in Europe and North America, we compared the potential of physiological and phenological metrics of Gross Primary Production (GPP) and Ecosystem Respiration (RECO) in explaining the interannual and spatial variability (IAV and SV) of forest net ecosystem production (NEP). In view of the better performance of physiological metrics, we developed the maximum carbon uptake index (MCUI), which integrated the physiology metrics of photosynthesis and respiration in summer, and further explored its ability in explaining the IAV and SV of NEP. The results suggest that the MCUI had a better ability than respiration-growth length ratio (RGR) in predicting NEP for all three forest types. The interpretation of MCUI based on meteorological variables illustrated that the controlling meteorological factors of MCUI differed substantially among ecosystems. The summer shortwave radiation had the greatest influence on MCUI at DBF sites, while the soil water content played an important but opposite role at ENF and DBF sites, and no significant meteorological driver was found at MF sites. The higher potential of MCUI in explaining IAV and SV of NEP highlights the importance of summer physiology in controlling the forest carbon sequestration, and further confirms the significant role of peak plant growth in regulating carbon cycle of forest ecosystems. Understanding the drivers of peak plant growth is therefore of a great significance for further improving the precious of ecosystem model in the future.
资助项目	National Key R& D program of China[2018YFA0606101] ; National Natural Science Foundation of China[41871255] ; key Research Program of Frontier Sciences, CAS[QYZDB-SSW-DQC011] ; CAS interdisciplinary team[JCTD-2020-05] ; CDIAC ; ICOS Ecosystem Thematic Center ; OzFlux ; China-Flux ; AsiaFlux offices
WOS关键词	GROSS PRIMARY PRODUCTION ; DIGITAL REPEAT PHOTOGRAPHY ; EDDY COVARIANCE TECHNIQUE ; CARBON-DIOXIDE EXCHANGE ; SOIL RESPIRATION ; CLIMATE-CHANGE ; DECIDUOUS FOREST ; PLANT PHENOLOGY ; ELEVATED CO2 ; BOREAL
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000683742500003
资助机构	National Key R& D program of China ; National Natural Science Foundation of China ; key Research Program of Frontier Sciences, CAS ; CAS interdisciplinary team ; CDIAC ; ICOS Ecosystem Thematic Center ; OzFlux ; China-Flux ; AsiaFlux offices
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164663]
专题	中国科学院地理科学与资源研究所
通讯作者	Wu, Chaoyang; Liu, Lin
作者单位	1.Forest Serv Autonomous Prov Bolzano, Via Bolzano 6, I-39100 Bolzano, Italy 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Hebei GEO Univ, Shijiazhuang 050031, Hebei, Peoples R China 5.Natl Forestry & Grassland Adm, Planning & Design Inst Forestry Prod Ind, Beijing 100010, Peoples R China 6.Univ British Columbia, 136-2357 Main Mall, Vancouver, BC V6T 1Z4, Canada 7.Swiss Fed Inst Technol, Dept Environm Syst Sci, CH-8092 Zurich, Switzerland 8.Free Univ Bolzano, Fac Sci & Technol, Piazza Univ 5, I-39100 Bolzano, Italy 9.Univ Goettingen, Bioclimatol, Busgenweg 2, D-37077 Gottingen, Germany 10.Russian Acad Sci, AN Severtsov Inst Ecol & Evolut, Leninsky Pr 33, Moscow 119071, Russia
推荐引用方式 GB/T 7714	Liu, Ying,Wu, Chaoyang,Liu, Lin,et al. Interannual and spatial variability of net ecosystem production in forests explained by an integrated physiological indicator in summer[J]. ECOLOGICAL INDICATORS,2021,129:11.
APA	Liu, Ying.,Wu, Chaoyang.,Liu, Lin.,Gu, Chengyan.,Black, T. Andrew.,...&Govind, Ajit.(2021).Interannual and spatial variability of net ecosystem production in forests explained by an integrated physiological indicator in summer.ECOLOGICAL INDICATORS,129,11.
MLA	Liu, Ying,et al."Interannual and spatial variability of net ecosystem production in forests explained by an integrated physiological indicator in summer".ECOLOGICAL INDICATORS 129(2021):11.