Anthropogenic activities dominated tropical forest carbon balance in two contrary ways over the Greater Mekong Subregion in the 21st century

Chen，Baozhang1,2,3,4; Kayiranga，Alphonse2,3; Ge，Mengyu1; Ciais，Philippe5; Zhang，Huifang2; Black，Andy6; Xiao，Xiangming7; Yuan，Wenping8; Zeng，Zhenzhong9; Piao，Shilong10,11,12

2023

10.1111/gcb.16688

Global Change Biology   影响因子和分区

1354-1013

1365-2486

The tropical forest carbon (C) balance threatened by extensive socio-economic development in the Greater Mekong Subregion (GMS) in Asia is a notable data gap and remains contentious. Here we generated a long-term spatially quantified assessment of changes in forests and C stocks from 1999 to 2019 at a spatial resolution of 30 m, based on multiple streams of state-of-the-art high-resolution satellite imagery and in situ observations. Our results show that (i) about 0.54 million square kilometers (21.0% of the region) experienced forest cover transitions with a net increase in forest cover by 4.3% (0.11 million square kilometers, equivalent to 0.31 petagram of C [Pg C] stocks); (ii) forest losses mainly in Cambodia, Thailand, and in the south of Vietnam, were also counteracted by forest gains in China due mainly to afforestation; and (iii) at the national level during the study period an increase in both C stocks and C sequestration (net C gain of 0.087 Pg C) in China from new plantation, offset anthropogenetic emissions (net C loss of 0.074 Pg C) mainly in Cambodia and Thailand from deforestation. Political, social, and economic factors significantly influenced forest cover change and C sequestration in the GMS, positively in China while negatively in other countries, especially in Cambodia and Thailand. These findings have implications on national strategies for climate change mitigation and adaptation in other hotspots of tropical forests.

anthropogenic carbon uptake/emissions carbon sequestration forest cover changes the Greater Mekong Subregion tropical forest

SCI

英语

其他

National Key R&D Program of China[2018YFA0606001] ; National Natural Science Foundation of China[41771114] ; Innovation Project of LREIS[KPI005]

Biodiversity & Conservation ; Environmental Sciences & Ecology

Biodiversity Conservation ; Ecology ; Environmental Sciences

WOS:000984466200001

WILEY

ENVIRONMENT/ECOLOGY

2-s2.0-85152029643

Scopus

1.School of Remote Sensing and Geomatics Engineering,Nanjing University of Information Science and Technology,Nanjing,210044,China
2.State Key Laboratory of Resource and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing,100101,China
3.University of Chinese Academy of Sciences,Beijing,100190,China
4.Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing,210023,China
5.Laboratoire des Sciences du Climat et de l'Environnement,CEA-CNRS-UVSQ,Université Paris-Saclay,Gif-sur-Yvette,91191,France
6.Faculty of Land and Food Systems,University of British Columbia,Vancouver,Canada
7.Department of Microbiology and Plant Biology,Center for Earth Observation and Modeling,University of Oklahoma,Norman,United States
8.School of Atmospheric Sciences,Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies,Zhuhai Key Laboratory of Dynamics Urban Climate and Ecology,Sun Yat-sen University,Zhuhai,Guangdong,510245,China
9.State Environmental Protection Key Laboratory of Integrated Surface Water–Groundwater Pollution Control,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,China
10.Sino-French Institute for Earth System Science,College of Urban and Environmental Sciences,Peking University,Beijing,100871,China
11.Key Laboratory of Alpine Ecology and Biodiversity,Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing,100085,China
12.Center for Excellence in Tibetan Plateau Earth Sciences,Chinese Academy of Sciences,Beijing,100085,China

Chen，Baozhang,Kayiranga，Alphonse,Ge，Mengyu,et al. Anthropogenic activities dominated tropical forest carbon balance in two contrary ways over the Greater Mekong Subregion in the 21st century[J]. Global Change Biology,2023,29(12).

Chen，Baozhang.,Kayiranga，Alphonse.,Ge，Mengyu.,Ciais，Philippe.,Zhang，Huifang.,...&Piao，Shilong.(2023).Anthropogenic activities dominated tropical forest carbon balance in two contrary ways over the Greater Mekong Subregion in the 21st century.Global Change Biology,29(12).

Chen，Baozhang,et al."Anthropogenic activities dominated tropical forest carbon balance in two contrary ways over the Greater Mekong Subregion in the 21st century".Global Change Biology 29.12(2023).