Carbon footprint accounting method for coastal crab, shrimp and shellfish polyculture pond based on culture cycle

Abstract

The invention relates to a coastal crab, shrimp and shellfish polyculture pond carbon footprint accounting method based on a culture period, and the method comprises the following steps: 1, determining a system boundary based on a culture period and a non-culture period, and the system boundary comprises a first-stage boundary and a second-stage boundary; the first-level boundary is a pond native ecosystem and covers greenhouse gas exchange flux of a water-gas interface and a soil-gas interface, stable carbon burial in sediments, carbon transfer of cultured organism biomass and form transformation and fate of inert dissolved organic carbon and dissolved inorganic carbon in a water body. According to the method, the whole-year net carbon footprint of the breeding system is accurately and completely evaluated by constructing the boundary of the whole-carbon library system, distinguishing the breeding period from the non-breeding period and integrating direct flux measurement, life cycle indirect emission accounting and quantification of various carbon sink mechanisms.

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