Abstract:

Marine capture fishery is an important component of the marine economy, and it plays an important role in promotingthe development of marine economy However, it should be recognized that marine capture fishery is a high energy consumption industry of marine economy Lowcarbon fishery becomes a new development direction, and greenhouse gasemission of marine capture fishery becomes a hot issue A decomposition model based on the extended Kaya identity and accounting analysis onthegreenhouse gas emissions of marine capture fishery wasestablished from 2006 to 2011, and impacts fromcatches scale, fishing methods structure, fishing methods energy intensity and fuel emission factorwere examined in detail with the LMDI methodThe results showed that greenhouse gas emissions from marine capture fisheries had a steady growth trend, the average annual growth in greenhouse gas emissions was 266 600 tons, and the average rate was 154% Greenhouse gases from trawl and gill netsaccounted for about 80% of the total, and the greenhouse effect was the strongestThe ratio of GHG emissions and capture production of different marine capture fishery methods showed the following characteristics from 2006 to 2011Firstly, marine capture fisheriesgreenhouse effectof the different fishingmethodscould be divided into three levels: the high GHG emissions effect level, the medium GHG emissions effect level andthe low GHG emissions effect level The high GHG emissions effect levelincluded two fishing methods of trawl and gill nets, and the ratio was greater than 15The medium GHG emissions effect levelincludedfishing tackle, seine and other methods, andthe ratio was between 08 and 15The low GHG emissions effect levelonly includedstow net, and the ratio was less than 08 Secondly, the greenhouse effect of fishing tackle showed a growth trend from 2006 to 2011, and the ratio reached to 139 in 2011, which was the highest greenhouse effect Thirdly, the other fishing methods of greenhouse effect remained stable The results of effect of decomposition factors of marine capture fishery from 2006 to 2011, showed that the capture production scaleeffect was 6320%,fishing methods in energy effect was 2465%, and the fishing methods structural effect was 1214%, so the marine capture production scale was the most important factor driving greenhouse gas emissions of marine capture fisheries in China Finally, some suggestions were put forward, such as taking fishing quota or implementing longerterm moratorium systemto reduce the total capture production, which is not only beneficial to the protection of the marine fishery resources, but alsoto reducing greenhouse gas emissions And the structure of the fishing method should be adjusted to low greenhouse gas emissions by establishing marine capture fishery ecological compensation