海水养殖贝类的粮食安全贡献评估OA

Under the context of the new development stage and the all-encompassing approach to food,marine aquaculture of shellfish holds significant practical value in enhancing high-quality protein supply,ensuring food security and promoting the healthy China initiative.The contribution of marine aquaculture of shellfish to food security from the perspective of energy and protein was evaluated.Combining industrial analysis,constraints affecting the food security contributions and analyzes improvement paths were identified.The results showed that,China's marine aquaculture of shellfish contributed 18.66 trillion kJ of energy in 2023,equivalent to the energy output of 131.75×104 t of wheat,corresponding to the production capacity from 22.79×104 hm2 of wheat-sown area.The protein contribution reached 68.63×104 t,comparable to the protein output from 6 305.48×104 pigs,requiring 1 055.91×104 t of corn feed(3.66%of national corn production)cultivated on 1 616.50×104 hm2 of corn-sown area.This was equivalent to 2.51 time the corn-sown area of Heilongjiang province(645.17×104 hm2),which had the largest corn cultivation area in China in 2023.With the coordinated expansion in both supply and demand of shellfish products,China's marine aquaculture of shellfish exhibited a clear upward trend in food security contributions,which could help ensure food security and mitigate market shocks caused by meat supply disruptions.Above results provided a basis for promoting high-quality development of marine aquaculture of shellfish and enhancing its food security contribution level.