Value flow analysis based on EAP industrial chain: case of Huaning in Xichang, Sichuan

In this paper, based on symbiotic network of Eco-agricultural Park (EAP), value flows of different industrial chains are studied, and input–output efficiencies of industrial chain and individual enterprise accounted independently are compared in the case of Huaning EAP. The results indicate: (1) the total profit of industrial chain of feedstuff processing, breeder duck breeding, laying-hen breeding, farm garden, dairy farm and milk processing is more than the sum of profits of individual enterprises independently accounted, with a difference of 950,800 RMB yuan. Input–output efficiency of this industrial chain is 1.30 times higher than the average that of individual enterprises accounted independently. (2) The total profit of industrial chain of feedstuff processing, dairy farm, grass farm, laying-hen breeding and milk processing is more than the sum of profits of individual enterprises accounted independently, with a difference of 3,258,800 RMB yuan. Input–output efficiency of this industrial chain is 1.45 times higher than the average that of individual enterprises accounted independently. (3) Through collaboration among enterprises in the industrial system, the benefits of the industrial chain are much higher than the sum of those obtained by individual enterprises, which is benefited from the performance of resource and by-product exchange network among enterprises in the EAP.