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Huan Jing Ke Xue

Title:		[Estimation of VOC emission from forests in China based on the volume of tree species]
Author(s):		Zhang GF; Xie SD;
Address:		"State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. gfzhang@pku.edu.cn"
Journal Title:		Huan Jing Ke Xue
Year:		2009
Volume:		30
Issue:		10
Page Number:		2816 - 2822
DOI:
ISSN/ISBN:		0250-3301 (Print) 0250-3301 (Linking)
Abstract:		"Applying the volume data of dominant trees from statistics on the national forest resources, volatile organic compounds (VOC) emissions of each main tree species in China were estimated based on the light-temperature model put forward by Guenther. China's VOC emission inventory for forest was established, and the space-time and age-class distributions of VOC emission were analyzed. The results show that the total VOC emissions from forests in China are 8565.76 Gg, of which isoprene is 5689.38 Gg (66.42%), monoterpenes is 1343.95 Gg (15.69%), and other VOC is 1532.43 Gg (17.89%). VOC emissions have significant species variation. Quercus is the main species responsible for emission, contributing 45.22% of the total, followed by Picea and Pinus massoniana with 6.34% and 5.22%, respectively. Southwest and Northeast China are the major emission regions. In specific, Yunnan, Sichuan, Heilongjiang, Jilin and Shaanxi are the top five provinces producing the most VOC emissions from forests, and their contributions to the total are 15.09%, 12.58%, 10.35%, 7.49% and 7.37%, respectively. Emissions from these five provinces occupy more than half (52.88%) of the national emissions. Besides, VOC emissions show remarkable seasonal variation. Emissions in summer are the largest, accounting for 56.66% of the annual. Forests of different ages have different emission contribution. Half-mature forests play a key role and contribute 38.84% of the total emission from forests"
Keywords:		"Air Pollutants/*analysis China Models, Theoretical Picea/metabolism Pinus/metabolism Quercus/metabolism Species Specificity Trees/classification/*metabolism Volatile Organic Compounds/*analysis;"
Notes:		"MedlineZhang, Gang-feng Xie, Shao-dong chi English Abstract Research Support, Non-U.S. Gov't China 2009/12/09 Huan Jing Ke Xue. 2009 Oct 15; 30(10):2816-22"