气候变化领域集成服务门户(CCPortal): Elevated atmospheric CO2 concentration and vegetation structural changes contributed to gross primary productivity increase more than climate and forest cover changes in subtropical forests of China

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DOI	10.5194/bg-21-2253-2024
	Elevated atmospheric CO2 concentration and vegetation structural changes contributed to gross primary productivity increase more than climate and forest cover changes in subtropical forests of China
	Chen, Tao; Meunier, Felicien; Peaucelle, Marc; Tang, Guoping; Yuan, Ye; Verbeeck, Hans
发表日期	2024
ISSN	1726-4170
EISSN	1726-4189
起始页码	21
结束页码	9
卷号	21 期号:9
英文摘要	The subtropical forests of China play a pivotal role in the global carbon cycle and in regulating the global climate. Quantifying the individual and combined effects of forest cover change (FCC), vegetation structural change (e.g. leaf area index (LAI)), CO2 fertilisation, and climate change (CC) on the annual gross primary productivity (GPP) dynamics of different subtropical forest types are essential for mitigating carbon emissions and predicting future climate changes, but these impacts remain unclear. In this study, we used a processed-based model to comprehensively investigate the impacts of these factors on GPP variations with a series of model experiments in China's subtropical forests from 2001 to 2018. Simulated GPP showed a significant increasing trend (20.67 g Cm(-2)yr(-1), p<0.001) under the interaction effects of FCC, LAI change, rising CO2, and CC. The CO2 fertilisation (6.84 g Cm(-2)yr(-1), p<0.001) and LAI change (3.79 , p=0.004) were the two dominant drivers of total subtropical forest GPP increase, followed by the effects of FCC (0.52 , p<0.001) and CC (0.92 gCm(-2)yr(-1) , p=0.080). We observed different responses to drivers depending on forest types. The evergreen broad-leaved forests showed the maximum carbon sequestration rate due to the positive effects of all drivers. Both the FCC (0.19 gCm(-2)yr(-1), p<0.05) and CC (1.22 gCm(-2)yr(-1) , p<0.05) significantly decreased evergreen needle-leaved forest GPP, while their negative effects were almost offset by the positive impact of LAI changes. Our results indicated that LAI outweighed FCC in promoting GPP, which is an essential driver that needs to be accounted for in studies and ecological and management programmes. Overall, our study offers a novel perspective on different drivers of subtropical forest GPP changes and provides valuable information for policy makers to better manage subtropical forests to mitigate climate change risks.
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology
WOS类目	Ecology ; Geosciences, Multidisciplinary
WOS记录号	WOS:001215007800001
来源期刊	BIOGEOSCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290992
作者单位	Sun Yat Sen University; Ghent University; INRAE; Universite de Bordeaux; Chinese Academy of Sciences; Xinjiang Institute of Ecology & Geography, CAS
推荐引用方式 GB/T 7714	Chen, Tao,Meunier, Felicien,Peaucelle, Marc,et al. Elevated atmospheric CO2 concentration and vegetation structural changes contributed to gross primary productivity increase more than climate and forest cover changes in subtropical forests of China[J],2024,21(9).
APA	Chen, Tao,Meunier, Felicien,Peaucelle, Marc,Tang, Guoping,Yuan, Ye,&Verbeeck, Hans.(2024).Elevated atmospheric CO2 concentration and vegetation structural changes contributed to gross primary productivity increase more than climate and forest cover changes in subtropical forests of China.BIOGEOSCIENCES,21(9).
MLA	Chen, Tao,et al."Elevated atmospheric CO2 concentration and vegetation structural changes contributed to gross primary productivity increase more than climate and forest cover changes in subtropical forests of China".BIOGEOSCIENCES 21.9(2024).