地球之肺或即将变成肺干，亚马逊或将进入超热带气候

Core Insights - The Amazon rainforest, known as the "lungs of the Earth," is at risk of transitioning to a "super-tropical climate" by 2100 due to rising global carbon emissions [1] - This new climate state will lead to longer dry seasons and more severe droughts, a situation not seen on Earth for millions of years [1] - Tree mortality rates are projected to increase dramatically from 1% to 55%, affecting even trees over 1,000 years old, which will significantly reduce the rainforest's carbon absorption capacity [1] - Current high temperatures and drought conditions indicate that this emerging climate is imminent, but human efforts in emission reduction could potentially mitigate or reverse this process [1]