The impact of the aquaculture industry agglomeration on output growth in China

With the rapid development of China’s aquaculture industry, the phenomenon of industrial agglomeration is becoming more and more obvious. This study uses the LMDI decomposition analysis method to empirically analyze the impact of aquaculture industry agglomeration on output growth. The study’s conclusions include: (1) Aquaculture industry agglomeration plays an essential role in promoting the growth of aquaculture output. From 2006 to 2022, China’s aquaculture production increased by 18.8711 million tons, and the agglomeration of the aquaculture industry promoted aquaculture production to increase by 5.162 million tons, with a contribution rate of 27.35 %. (2) The impact of China’s aquaculture industry agglomeration on output growth shows different characteristics at different stages. During this period, the promotion effect of the agglomeration effect on output growth and the inhibition effect of the crowding effect on output growth are opposite. (3) Aquaculture industry agglomeration is a significant driving force for the output growth of different aquaculture models. The agglomeration of the aquaculture industry has promoted the growth of aquaculture output in deep-water cage, raft, bottom sowing aquaculture mode in mariculture, and pen, cage, and factory aquaculture mode in freshwater aquaculture. During this period, the agglomeration effect of the industrial agglomeration of the above aquaculture modes on the growth of the aquaculture output of each aquaculture mode is highlighted.