Carbon sequestration in wetlands: concept and estimation

Abstract

Requirements of scientific advancement in understanding of processes regulating carbon (C) balance in terrestrial/semi-aquatic ecosystems, and the roles of the ecosystems in exchange of carbon dioxide (CO 2 ) between atmosphere and terrestrial biosphere are well recognized. However, only limited studies have been conducted to assess the roles and potentials of wetlands, semi-aquatic ecosystems, in C sequestration. Out of 7% of world’s land is wetland. Thus, the study of C sequestration and the factors regulating it in a wetland will not only provide most needed knowledge for global C budgets, but also assess the possible integration of C sequestration in the objectives of creation and restoration of wetlands. The determination of stability of organic matter and assessment of roles of biotic and abiotic factors in regulating C exchanges between wetland ecosystems and the atmosphere may not only enhance the understanding of fundamental biogeochemical and eco-physical processes regulating C transformation in aquatic and terrestrial systems, but also help in the endeavors of reduction of anthropogenic CO 2 in the atmosphere with long-term parity, and enhance the accuracy of global C budgets.