Asymmetric patterns and temporal changes in phenology-based seasonal gross carbon uptake of global terrestrial ecosystems

doi:10.1111/geb.13084

	Asymmetric patterns and temporal changes in phenology-based seasonal gross carbon uptake of global terrestrial ecosystems
	Wang Lanhui 3; Tian Feng 1; Huang Ke 3,4; Wang Yuhang 2,3; Wu Zhendong 1,3; Fensholt, Rasmus 3
刊名	GLOBAL ECOLOGY AND BIOGEOGRAPHY
	2020-06-01
卷号	29 期号:6 页码:1020-1033
关键词	carbon uptake GPP growing season land-use cover change phenology seasonality photosynthesis primary production terrestrial ecosystems vegetation dynamics
ISSN号	1466-822X
DOI	10.1111/geb.13084
通讯作者	Wang Lanhui(lanw@ign.ku.dk)
英文摘要	Aim To study global patterns and temporal changes in the seasonal dynamics (quantity and seasonal distribution) of terrestrial gross carbon uptake in response to global environmental change. Location Global. Time period 2000-2016. Major taxa studied Terrestrial ecosystems. Methods Following a phenology-based definition of photosynthetic seasonality, we decompose gross primary production (GPP) into three periods, green-up, maturity and senescence, and derive their corresponding GPP (GPPgp, GPPmp and GPPsp, respectively) from a newly developed time series of satellite-based global GPP to study spatio-temporal dynamics of seasonal GPP. Results We find that the global fraction of GPPsp (19.8%) is larger than GPPgp (14.3%), indicating a globally asymmetric seasonal distribution of gross carbon uptake by terrestrial ecosystems. Globally, GPPmp plays a dominant role in shaping spatial patterns and increasing/decreasing trends in GPP, while GPPgp/GPPsp contributes to increasing GPP at the regional scale. Higher fractions of GPPgp/GPPmp (lower of GPPsp), as well as the co-occurrence of increasing GPP and non-tree vegetation cover in major croplands, are likely to be caused by agricultural intensification. Global changes in GPPgp and GPPsp are closely related to changes in their seasonal distributions (R = .86/.8, respectively), whereas this relationship is weaker for GPPmp (R = .53). Finally, high correlations are observed between changes in GPPgp and GPPsp and changes in their durations (R = .78/.78, respectively), while GPPmp shows a relatively lower correlation with its duration (R = .67). Main conclusions The asymmetric spatio-temporal patterns in the seasonal dynamics of global terrestrial gross carbon uptake found here have been substantially reshaped by anthropogenic land-use/cover changes and changes in photosynthetic phenology. Compared to calendar-based meteorological seasons more suitable for temperate/subpolar ecosystems, our phenology-based approach is expected to provide an alternative starting point for a better understanding of global spatio-temporal changes in the seasonal dynamics of terrestrial ecosystem processes and functioning under accelerating global change.
WOS关键词	PHOTOSYNTHETIC SEASONALITY ; CHLOROPHYLL FLUORESCENCE ; PRIMARY PRODUCTIVITY ; HIGH-RESOLUTION ; NORTHERN ; CYCLE ; LATITUDES ; RESPONSES ; NITROGEN ; DAYTIME
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
语种	英语
出版者	WILEY
WOS记录号	WOS:000531423600004
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159788]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang Lanhui
作者单位	1.Lund Univ, Dept Phys Geog & Ecosyst Sci, Lund, Sweden 2.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing, Peoples R China 3.Univ Copenhagen, Dept Geosci & Nat Resource Management, Oster Voldgade 10, DK-1350 Copenhagen, Denmark 4.Chinese Acad Sci, Lhasa Plateau Ecosyst Res Stn, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang Lanhui,Tian Feng,Huang Ke,et al. Asymmetric patterns and temporal changes in phenology-based seasonal gross carbon uptake of global terrestrial ecosystems[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2020,29(6):1020-1033.
APA	Wang Lanhui,Tian Feng,Huang Ke,Wang Yuhang,Wu Zhendong,&Fensholt, Rasmus.(2020).Asymmetric patterns and temporal changes in phenology-based seasonal gross carbon uptake of global terrestrial ecosystems.GLOBAL ECOLOGY AND BIOGEOGRAPHY,29(6),1020-1033.
MLA	Wang Lanhui,et al."Asymmetric patterns and temporal changes in phenology-based seasonal gross carbon uptake of global terrestrial ecosystems".GLOBAL ECOLOGY AND BIOGEOGRAPHY 29.6(2020):1020-1033.