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Marine aquaculture can deliver 40% lower carbon footprints than freshwater aquaculture based on feed, energy and biogeochemical cycles

文献类型： 外文期刊

作者： Shen, Lu 1 ; Wu, Lidong 3 ; Wei, Wei 5 ; Yang, Yi 5 ; MacLeod, Michael J. 6 ; Lin, Jintai 1 ; Song, Guodong 7 ; Yuan, Junji 9 ; Yang, Ping 10 ; Wu, Lin 11 ; Li, Mingwei 12 ; Zhuang, Minghao 13 ;

作者机构： 1.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing, Peoples R China

2.Peking Univ, Inst Carbon Neutral, Beijing, Peoples R China

3.Chinese Acad Fishery Sci, Beijing, Peoples R China

4.Chinese Acad Fishery Sci, State Key Lab Mariculture Biobreeding & Sustainabl, Qingdao, Peoples R China

5.Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, Chongqing, Peoples R China

6.Scotlands Rural Coll, Dept Rural Econ Environm & Soc, Edinburgh, Scotland

7.Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Qingdao, Peoples R China

8.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao, Peoples R China

9.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing, Peoples R China

10.Fujian Normal Univ, Sch Geog Sci, Fuzhou, Peoples R China

11.Chinese Acad Sci, Inst Comp Technol, Beijing, Peoples R China

12.Tsinghua Univ, Inst Energy Environm & Econ, Beijing, Peoples R China

13.China Agr Univ, Coll Resources & Environm Sci, State Key Lab Nutrient Use & Management, Key Lab Plant Soil Interact,Minist Educ, Beijing, Peoples R China

期刊名称：NATURE FOOD （ 影响因子：23.6； 五年影响因子：25.0 ）

ISSN：

年卷期： 2024 年 5 卷 7 期

页码：

收录情况： SCI

摘要： Freshwater aquaculture is an increasingly important source of blue foods but produces substantial methane and nitrous oxide emissions. Marine aquaculture, also known as mariculture, is a smaller sector with a large growth potential, but its climate impacts are challenging to accurately quantify. Here we assess the greenhouse gas emissions from mariculture's aquatic environment in global potentially suitable areas at 10 km resolution on the basis of marine biogeochemical cycles, greenhouse gas measurements from research cruises and satellite-observed net primary productivity. Mariculture's aquatic emissions intensities are estimated to be 1-6 g CH4 kg(-1) carcass weight and 0.05-0.2 g N2O kg(-1) carcass weight, >98% and >80% lower than freshwater systems. Using a life-cycle assessment approach, we show that mariculture's carbon footprints are similar to 40% lower than those of freshwater aquaculture based on feed, energy use and the aquatic environment emissions. Adoption of mariculture alongside freshwater aquaculture production could offer considerable climate benefits to meet future dietary protein and nutritional needs.

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