Carbon sequestration service refers to reducing greenhouse gas emissions by storing and decomposing waste, so as to achieve the purpose of slowing global warming. It usually captures and stores gas and reduces carbon dioxide emissions by planting trees and improving soil.

In addition to slowing down global warming, carbon sequestration services can also help maintain ecological balance, enhance the ecological diversity of communities, improve the efficiency of agriculture and forestry, and make communities better adapt to changes. In addition, carbon sequestration services can also improve air and water quality, provide more leisure and fitness services for residents, and provide local employment opportunities.

The so-called carbon sink, also known as carbon sequestration, refers to measures to increase the carbon content of carbon pools except the atmosphere, including physical carbon sequestration and biological carbon sequestration. Physical carbon sequestration is the long-term storage of carbon dioxide in exploited oil and gas wells, coal seams and deep seas. Plants can convert carbon dioxide in the atmosphere into carbohydrates through photosynthesis, and fix them in plants or soil in the form of organic carbon.

Biological carbon fixation is to improve the carbon absorption and storage capacity of ecosystem by using photosynthesis of plants, thus reducing the concentration of carbon dioxide in the atmosphere and slowing down the global warming trend.

There are two common ways to fix carbon: photosynthesis, such as various green plants and photosynthetic autotrophic microorganisms (such as cyanobacteria); Chemical energy synthesis, such as nitrifying bacteria using ammonia oxide to synthesize organic matter. Biological carbon fixation improves the carbon absorption and storage capacity of the ecosystem and reduces the concentration of carbon dioxide in the atmosphere.