研究发现亚马孙森林正在“长胖”

Core Insights - The Amazon rainforest is experiencing an increase in tree size, with an average growth of 3.2% every decade, correlating with rising atmospheric CO2 levels [1][2] - The research involved over 60 universities globally and monitored 188 fixed plots in the Amazon over more than 30 years, noting a nearly 20% increase in atmospheric CO2 during this period [1] - The study highlights the significant carbon absorption capacity of large trees, confirming the resilience of the Amazon rainforest in carbon sequestration despite climate change [1] Environmental Impact - Deforestation in the Amazon has devastating effects, as large tropical trees, some hundreds of years old, cannot be replaced by newly planted trees in terms of carbon storage or biodiversity [2] - The health of giant trees is crucial for maintaining local ecosystem integrity, and ongoing deforestation poses an increasing threat to their survival [2] - Understanding how these large trees respond to climate threats and their seed dispersal mechanisms has become a critical issue [2]