Reasons for the decline of aquaculture scale in Beijing

The service function of urban development has changed, aquatic germplasm resources are lacking and the breeding cost is high.

1. Transformation of urban development service function: With Beijing's urban development, urban functions are gradually changing to unproductive services, which puts forward higher requirements for land resources and environmental protection.

2. Lack of aquatic germplasm resources: Compared with other regions, Beijing lacks rich and diverse aquatic germplasm resources. Due to the limitation of natural conditions and space, it is impossible to meet the needs of a large number of aquaculture on a limited land area.

3. High breeding cost: Compared with rural areas or coastal areas, Beijing, as a metropolis, faces higher cost pressure. Including land use, labor, feed, etc., and the shortage of supply chain and the increase of logistics and transportation costs will also affect the profit rate.