The Arctic tundra transforms into a source of carbon dioxide

The Arctic has a unique climate, and its tundra has a unique ecology. In the past, the Arctic tundra played an important role in the carbon cycle system. It was a gathering place for carbon and absorbed a large amount of carbon dioxide. Just like the lungs of the earth, it made a huge contribution to the global climate balance.

However, today is different from the past. There are many signs that the Arctic tundra has quietly transformed and has actually become a source of carbon dioxide. The reasons for this change are complex. Due to changes in the global climate, the temperature is gradually rising, which is the main reason. The Arctic is already extremely sensitive to climate changes, and a slight fluctuation in temperature will lead to a chain reaction.

The temperature rises and the permafrost melts. In the permafrost, a large amount of organic matter is stored and deposited here over a long period of time. Once the permafrost is developed, the organic matter in it is exposed to the outside world, the microorganisms are active, and the decomposition accelerates. This decomposition process releases a large amount of carbon dioxide, which continues to escape into the atmosphere.

Furthermore, vegetation is also affected. Climate change, changes in vegetation types and distribution. Cold-tolerant plants that are originally suitable for growth may be limited due to environmental discomfort; while some new species may be able to enter due to climate warming. Vegetation changes affect the balance between photosynthesis and respiration. Photosynthesis is weak, but respiration is strong, resulting in reduced carbon dioxide absorption and increased emissions.

The transformation of the Arctic tundra into a source of carbon dioxide has far-reaching implications. The increase in carbon dioxide in the atmosphere, the intensification of the greenhouse effect, and the further It may cause sea level rise, threatening many coastal areas; extreme climate events may become more frequent, affecting ecology and human life.

To alleviate this situation, the world needs to work together to deal with it. Countries should actively fulfill their emission reduction commitments and reduce greenhouse gas emissions; strengthen research on Arctic ecology, and gain a deeper understanding of the change mechanism in order to formulate precise responses. Protecting the Arctic tundra and maintaining ecological balance is a top priority and concerns the future destiny of mankind.