globalchange  > 气候减缓与适应
DOI: 10.1002/2017JD027934
Scopus记录号: 2-s2.0-85044849912
论文题名:
Regional to Global Biogenic Isoprene Emission Responses to Changes in Vegetation From 2000 to 2015
作者: Chen W.H.; Guenther A.B.; Wang X.M.; Chen Y.H.; Gu D.S.; Chang M.; Zhou S.Z.; Wu L.L.; Zhang Y.Q.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:7
起始页码: 3757
结束页码: 3771
语种: 英语
英文关键词: biogenic isoprene emission ; model uncertainty ; plant functional types ; tree coverage ; vegetation
Scopus关键词: afforestation ; biogenic emission ; functional role ; global change ; isoprene ; land cover ; plantation ; uncertainty role ; vegetation cover ; vegetation dynamics ; volatile organic compound ; Amazon Basin ; China ; Europe ; India ; Southeast Asia ; West Africa
英文摘要: Isoprene, a dominant biogenic volatile organic compound that is mainly emitted by trees, has a significant impact on the atmospheric chemistry. Regional to global changes in biogenic isoprene emission associated with vegetation variations between 2000 and 2015 were estimated using the MEGAN model with satellite land cover data for inputs in this study. The satellite data estimates of land cover changes were compared to results from previous investigators that have either conducted regional studies or have used lower resolution land cover data. The analysis indicates that tree coverage increases of >5% occurred in 13% of locations including in central China and Europe. In contrast, a decrease of >5% was observed in about 5% of locations, especially in tropical regions. The trends in global tree coverage from 2000 to 2015 resulted in a global isoprene emission decrease of only 1.5%, but there were significant regional variations. Obvious decreases in tree coverage in some tropical areas (e.g., Amazon Basin, Western Africa, Southeast Asia) resulted in a ~10% reduction of regional isoprene emission due to agricultural expansion. Distinct increments of isoprene emission (5–10%) were mainly found in Northeast China and India and were associated with afforestation efforts. Deforestation and afforestation associated with managed plantations does not only affect the total forest coverage but also impacts average isoprene emission capacity, which can result in accelerated isoprene emission variations. Consequently, isoprene variation assessments are needed that not only account for changes in vegetation fractions but also consider the changes in plant species compositions of forests and other landscapes. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114087
Appears in Collections:气候减缓与适应

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作者单位: School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China; Department of Earth Science System, University of California, Irvine, CA, United States; Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China; School of Atmospheric Sciences, Sun Yat-Sen University, Guangzhou, China; Urban Environment and Ecology Research Center, the Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences (SCIES), Ministry of Environmental Protection (MEP), Guangzhou, China

Recommended Citation:
Chen W.H.,Guenther A.B.,Wang X.M.,et al. Regional to Global Biogenic Isoprene Emission Responses to Changes in Vegetation From 2000 to 2015[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(7)
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