Advances in the carbon sink potential of terrestrial ecosystems in China

作者：Guangsheng Zhou, Mengzi Zhou, Li Zhou, Yuhe Ji · 发表于：Chinese Science Bulletin (Chinese Version) · 年份：2022 · DOI：10.1360/tb-2022-0032 · 被引用次数：22 · 研究领域：Fire effects on ecosystems、Land Use and Ecosystem Services、Forest Management and Policy

The “carbon peak and carbon neutrality” concept has become a major demand for global climate governance and ecological civilization construction in China. Understanding the potential of terrestrial carbon sequestration and its response to climate change and human activities is very important for accurately predicting the impacts of future climate change on terrestrial ecosystems and is the basic premise for human beings to cope with climate change. Based on the perspective of terrestrial ecosystem carbon storage and carbon sinks, this paper summarizes the carbon storage of forest, shrub, grassland, farmland and wetland ecosystems of China, thus assessing the carbon sink potential of the Chinese terrestrial ecosystem and its response to different climate change scenarios and human activities. The evaluation results varied greatly due to different research methods and data. The average biomass carbon density of China’s forests and grasslands was approximately 55.7 and 4.8 Mg C ha −1 , respectively, which were lower than the average values of the global forests (94.2 Mg C ha −1 ) and grasslands (7.2 Mg C ha −1 ), mainly due to larger areas of young forests and extensive grazing. The average biomass carbon density of the wetland was approximately 4.1 Mg C ha −1 , which varied greatly for different types of wetland vegetation, and the highest value was located in coastal wetland vegetation (9.6 Mg C ha −1 ). The biomass carbon density of shrub and farmland was approximately 4.8–9....