气候变化领域集成服务门户(CCPortal): A long-term estimation of biogenic volatile organic compound (BVOC) emission in China from 2001-2016: The roles of land cover change and climate variability

CCPortal

DOI	10.5194/acp-21-4825-2021
	A long-term estimation of biogenic volatile organic compound (BVOC) emission in China from 2001-2016: The roles of land cover change and climate variability
	Wang H.; Wu Q.; Guenther A.B.; Yang X.; Wang L.; Xiao T.; Li J.; Feng J.; Xu Q.; Cheng H.
发表日期	2021
ISSN	1680-7316
起始页码	4825
结束页码	4848
卷号	21 期号:6
英文摘要	Satellite observations reveal that China has been leading the global greening trend in the past 2 decades. We assessed the impact of land cover change as well as climate variability on total biogenic volatile organic compound (BVOC) emission in China from 2001-2016. We found the greening trend in China is leading a national-scale increase in BVOC emission. The BVOC emission level in 2016 could be 11.7% higher than that in 2001 because of higher tree cover fraction and vegetation biomass. On the regional scale, the BVOC emission level from 2013-2016 could be 8.6 %-19.3 % higher than that from 2001-2004 in hotspots including (1) northeastern China, (2) Beijing and its surrounding areas, (3) the Qin Mountains, (4) Yunnan Province, (5) Guangxi-Guangdong provinces, and (6) Hainan island because of the land cover change without considering the impact of climate variability. The comparison among different scenarios showed that vegetation changes resulting from land cover management are the main driver of BVOC emission change in China. Climate variability contributed significantly to interannual variations but not much to the changing trend during the study period. In the standard scenario, which considers both land cover change and climate variability, a statistically significant increasing trend can still be found in regions including Beijing and its surroundings, Yunnan Province, and Hainan island, and BVOC emission total amount in these regions from 2013-2016 is 11.0 %-17.2% higher that from 2001-2004. We compared the long-term HCHO vertical columns (VC) from the satellite-based Ozone Monitoring Instrument (OMI) with the estimation of isoprene emission in summer. The results showed statistically significant positive correlation coefficients over the regions with high vegetation cover fractions. In addition, the isoprene emission and HCHO VC both showed statistically significant increasing trends in the south of China where these two variables have high positive correlation coefficients. This result may support our estimation of the variability and trends of BVOC emission in this region; however, the comparison still has large uncertainties since the chemical and physical processes, including transportation, diffusion and chemical reactions, were not considered. Our results suggest that the continued increase in BVOC will enhance the importance of considering BVOC when making policies for controlling ozone pollution in China along with ongoing efforts to increase the forest cover fraction. © 2021 Author(s).
语种	英语
scopus关键词	annual variation; atmospheric pollution; climate variation; emission; estimation method; land cover; vegetation cover; vegetation dynamics; volatile organic compound; China; Hainan; Yunnan
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247016
作者单位	College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China; Department of Earth System Science, University of California, Irvine, CA 92697, United States; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China
推荐引用方式 GB/T 7714	Wang H.,Wu Q.,Guenther A.B.,et al. A long-term estimation of biogenic volatile organic compound (BVOC) emission in China from 2001-2016: The roles of land cover change and climate variability[J],2021,21(6).
APA	Wang H..,Wu Q..,Guenther A.B..,Yang X..,Wang L..,...&Cheng H..(2021).A long-term estimation of biogenic volatile organic compound (BVOC) emission in China from 2001-2016: The roles of land cover change and climate variability.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(6).
MLA	Wang H.,et al."A long-term estimation of biogenic volatile organic compound (BVOC) emission in China from 2001-2016: The roles of land cover change and climate variability".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.6(2021).