气候变化领域集成服务门户(CCPortal): Vegetation biomass change in China in the 20th century: an assessment based on a combination of multi-model simulations and field observations

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DOI	10.1088/1748-9326/ab94e8
	Vegetation biomass change in China in the 20th century: an assessment based on a combination of multi-model simulations and field observations
	Song, Xiang; Li, Fang; Harrison, Sandy P.; Luo, Tianxiang; Arneth, Almut; Forrest, Matthew; Hantson, Stijn; Lasslop, Gitta; Mangeon, Stephane; Ni, Jian; Yue, Chao; Hickler, Thomas; Luo, Yiqi; Sitch, Stephen; Xu, Xin; Zhu, Zaichun
通讯作者	Li, F (通讯作者)
发表日期	2020
ISSN	1748-9326
卷号	15 期号:9
英文摘要	Vegetation biomass is a key and active component of the carbon cycle. Though China's vegetation biomass in recent decades has been widely investigated, only two studies have quantitatively assessed its century-scale changes so far and reported totally opposite trends. This study provided the first multi-model estimates of China's vegetation biomass change for the 20th century and its responses to historical changes in environmental and anthropogenic factors, based on simulations evaluated with the field observations from 3757 inventory plots in China and bias-corrected using machine learning (Gaussian process regression). A significant decline in vegetation biomass over the 20th century was shown by bias-corrected simulations from the six Dynamic Global Vegetation models (DGVMs) with trends ranging from -32.48 to -11.10 Tg C yr(-1)and a mean trend of -17.74 Tg C yr(-1). Land use and land cover change (LULCC) was primarily responsible for the simulated downward trend (-50.71 to -24.28 Tg C yr(-1)), while increasing atmospheric CO(2)concentration lead to increased vegetation biomass (+9.27 to + 13.37 Tg C yr(-1)). Climate change had limited impacts on the long-term trend (-3.75 to + 5.06 Tg C yr(-1)). This study highlights the importance of LULCC for historical reconstruction and future projection of vegetation biomass over China. It also suggests that the incorrect change in China's forest area for 1980-2000 in the LULCC dataset used as model input data of many existing and ongoing model intercomparison projects (MIPs) has likely led to inaccurate estimations of historical vegetation biomass changes in China.
关键词	TERRESTRIAL CARBON BALANCE LAND-USE MODEL ORCHIDEE INCORPORATING SPITFIRE CLIMATE STORAGE FIRE ECOSYSTEMS EMISSIONS DYNAMICS
英文关键词	vegetation biomass; China; 20th century changes; land use and land cover change; climate change; CO(2)concentration; DGVM simulations
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000565751700001
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260112
推荐引用方式 GB/T 7714	Song, Xiang,Li, Fang,Harrison, Sandy P.,et al. Vegetation biomass change in China in the 20th century: an assessment based on a combination of multi-model simulations and field observations[J]. 中国科学院青藏高原研究所,2020,15(9).
APA	Song, Xiang.,Li, Fang.,Harrison, Sandy P..,Luo, Tianxiang.,Arneth, Almut.,...&Zhu, Zaichun.(2020).Vegetation biomass change in China in the 20th century: an assessment based on a combination of multi-model simulations and field observations.ENVIRONMENTAL RESEARCH LETTERS,15(9).
MLA	Song, Xiang,et al."Vegetation biomass change in China in the 20th century: an assessment based on a combination of multi-model simulations and field observations".ENVIRONMENTAL RESEARCH LETTERS 15.9(2020).