Roles of ecosystems in greenhouse gas emission and haze reduction in China

摘要

The haze satellite map produced by NASA in 2013 showed a "Gray Great Wall" in the sky from Beijing to Hong Kong, indicating serious air pollution in China. The air pollutants and greenhouse gases can be reduced through engineering measures known as industrial gas emission and haze reduction ( GGE&H reduction), as well as through green GGE&H reduction by ecosystems such as forests and wetlands that play significant roles in carbon sequestration and atmospheric environmental purification of air, soil, and water. Compared with the industrial GGE&H reduction, the green GGE&H reduction is lower in investment and operational cost, but offers more ecological benefits and therefore is more economically feasible. In this review the roles of green GGE&H reduction are summarized and its future potential is highlighted. The possible approaches to enhance the capability of green GGE&H reduction in China are discussed.