Carbon emissions 300 million years ago caused significant decline in marine biodiversity

What are the consequences of global warming? What kind of living environment will life on earth face? Answering these questions leads to a period in Earth's history similar to the current Earth's environmental changes

Today, the earth is in a Cenozoic ice-chamber climate that began 34 million years ago.

The Late Paleozoic Ice Age between 360 and 280 million years was the longest and largest ice chamber climate on Earth, and it was also the only time since the establishment of terrestrial higher plants and terrestrial ecosystems that recorded the Earth's transition from an ice chamber climate to a greenhouse climate.

The international cooperation team led by researcher Chen Jitao of Nanjing Institute of Palaeontology, Professor Wang Xiangdong of Nanjing University, and Professor Isabel Montañez of the University of California, Davis, USA, has carried out stratigraphy, paleontology, sedimentology, A multidisciplinary comprehensive study of sedimentary geochemistry, numerical simulation, etc.

In the Naqing section of Luodian, Guizhou, there are rare continuous exposed Carboniferous marine strata in the world, which completely records the geochemical information of seawater in the late Carboniferous

The results show that in the late Carboniferous (about 304 million years ago) ice room climate, about 9 trillion tons of carbon were discharged into the atmosphere within 300,000 years, which caused significant warming of the global climate at that time

By comparing carbon emission events in different climatic environments in geological history and their resulting global warming and ocean hypoxia, the research team proposed for the first time that, under the same carbon emission rate, compared with the greenhouse climate, the ocean under the ice chamber climate More severe hypoxia may occur