On the carbon sink and carbon source attributes of plants and trees
Between heaven and earth, plants and trees multiply. Its metabolism of carbon is related to the balance of ecology, and there is a dispute between carbon sink and carbon source, which cannot be ignored.

When plants and trees perform photosynthesis, they can absorb carbon dioxide in the air. When the sun shines, chlorophyll acts as a medium, carbon dioxide and water phase, generating carbohydrates and oxygen. In this process, carbon remains in the body of plants and trees, either as the quality of branches or as the nourishment of roots. In terms of absorbing carbon dioxide, plants and trees can be carbon sinks. The mountains and forests are vast, the trees are towering, the seasons change, and the rise and fall of leaves are all the accumulation and dispersion of carbon. In spring, new leaves are first blooming, struggling to capture carbon; in autumn, the leaves fall yellow, and part of the carbon returns to the soil.

However, plants and trees also act as carbon sources. First, plants and trees breathe day and night. Although photosynthesis is the main day, but there is no sunlight at night, they live by breathing and exhale carbon dioxide, which is the release of carbon. Second, when plants and trees decay or burn in case of fire. Dead trees in the forest, years of erosion, microbial decomposition, and carbon returns to the atmosphere; mountain and forest wildfires ignite, and plants are instantly turned into ashes, spewing out a large amount of carbon dioxide. In addition, the impact of human activities, if excessive logging, forest land becomes barren, grass and trees are suddenly reduced, their carbon sequestration capacity is lost, and the improper disposal of wood after felling also accelerates the escape of carbon.

In summary, plants and trees have both the properties of carbon sink and carbon source. It is like the two ends of the balance in the ecological carbon cycle. Humans should be well protected to increase its carbon sink and reduce the harm of its carbon source. Afforestation, optimizing vegetation, so that plants and trees can absorb more carbon and release less carbon, so as to maintain ecological stability and climate peace.