Variations of carbon allocation and turnover time across tropical forests

doi:10.1111/geb.13302

	Variations of carbon allocation and turnover time across tropical forests
	Yang, Hui 2; Ciais, Philippe 2; Wang, Yilong 2,3; Huang, Yuanyuan 2; Wigneron, Jean-Pierre 4; Bastos, Ana 5; Chave, Jerome 6; Chang, Jinfeng 2; E. Doughty, Christopher 7; Fan, Lei 4
刊名	GLOBAL ECOLOGY AND BIOGEOGRAPHY
	2021-06-01
卷号	30 期号:6 页码:1271-1285
关键词	carbon cycle modelling carbon turnover time dynamic systems plant traits productivity allocation tropical ecosystem
ISSN号	1466-822X
DOI	10.1111/geb.13302
通讯作者	Yang, Hui(huiyang@lsce.ipsl.fr)
英文摘要	Aim The carbon sink in tropical forests is a highly uncertain component of the global carbon budget. An understanding of the processes controlling this sink requires better quantification of carbon allocation, stocks and turnover times. Location Tropical forests. Time period 2010-2017. Major taxa studied Tropical forest ecosystem. Methods We develop a novel data assimilation system using satellite-based annual above-ground biomass derived from L-band vegetation optical depth with 25 km x 25 km grid spacing, together with leaf area, to constrain the 25 km x 25 km carbon allocation patterns of net primary productivity (NPP) into the wood, leaf and root pools, and their turnover times. Our average data-driven estimates of these variables are broadly consistent with independent ground-based estimates of NPP allocation and wood turnover from forest inventory plots. Results In tropical forest, on average, the NPP allocation into wood (0.30 +/- 0.04) is significantly higher than that into leaves (0.24 +/- 0.07). From the wet to dry tropics, forest NPP allocation into both wood and leaves declines slightly. The turnover times of forest leaf pools exhibit little spatial variation, whereas the turnover times of wood pools in Africa (median and interquartile range: 50.1-4.0+5.5 years) are slightly longer than those in South America (48.2-3.3+4.0 years) and Southeast Asia (48.3-3.1+5.4 years). Our datasets reveal emergent trade-offs across climatic and vegetation gradients between growth and life span/turnover for both wood and leaves. The spatial gradients of NPP allocation to wood/leaves are associated with canopy height, adjusted by climate condition and nutrient acquisition. The spatial gradients of wood and leaf turnover times are influenced mainly by climate and leaf characteristics. Main conclusions Our data-driven estimates of carbon allocation and turnover times provide a basis for more detailed exploration of these mechanisms in field studies. This highlights that improved model representation of carbon allocation and turnover is necessary for more accurate prediction of future carbon dynamics.
资助项目	CCI Biomass
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
语种	英语
出版者	WILEY
WOS记录号	WOS:000641353100001
资助机构	CCI Biomass
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/161664]
专题	中国科学院地理科学与资源研究所
通讯作者	Yang, Hui
作者单位	1.Tsinghua Univ, Minist Educ, Dept Earth Syst Sci, Key Lab Earth Syst Modeling, Beijing, Peoples R China 2.Univ Paris Saclay, UVSQ, CNRS, CEA,LSCE,IPSL,Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China 4.INRAE Nouvelle Aquitaine, UMR 1391, ISPA, Villenave Dornon, France 5.Max Planck Inst Biogeochem, Dept Biogeochem Integrat, Hans Knoll Str 10, D-07745 Jena, Germany 6.Univ Paul Sabatier, Lab Evolut & Divers Biol, Toulouse, France 7.No Arizona Univ, Sch Informat Comp & Cyber Syst, Flagstaff, AZ 86011 USA 8.Univ Augsburg, Dept Geog, Augsburg, Germany 9.Univ Toulouse, CNRS, Meteo France, CNRM, Toulouse, France 10.Aberystwyth Univ, Dept Geog & Earth Sci, Aberystwyth, Dyfed, Wales
推荐引用方式 GB/T 7714	Yang, Hui,Ciais, Philippe,Wang, Yilong,et al. Variations of carbon allocation and turnover time across tropical forests[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2021,30(6):1271-1285.
APA	Yang, Hui.,Ciais, Philippe.,Wang, Yilong.,Huang, Yuanyuan.,Wigneron, Jean-Pierre.,...&Yu, Kailiang.(2021).Variations of carbon allocation and turnover time across tropical forests.GLOBAL ECOLOGY AND BIOGEOGRAPHY,30(6),1271-1285.
MLA	Yang, Hui,et al."Variations of carbon allocation and turnover time across tropical forests".GLOBAL ECOLOGY AND BIOGEOGRAPHY 30.6(2021):1271-1285.