Study On Economic Benefits And Environmental Effects Of "Pig-Marsh-Fruit" Circular Agriculture Investment Project

With the development of China's economy and the improvement of people's consumption level,the rapid development of meat consumption,especially pork consumption,has ranked first in China's meat consumption.However,the breeding of pigs inevitably produces a large amount of waste,which will inevitably pollute the environment if not cost-effectively processed.How to efficiently convert these aquaculture wastes and pollutants into other available resources is the key to promoting the coordinated economic and environmental development of the livestock industry.It is also one of the important areas for the development of circular agriculture in the country.This thesis takes Gutian County Xiangyun Ecological Park as the research object,and organizes the basic situation,process flow and various process parameters of the ecological park,and divides the“pig-marsh-fruit” circular agricultural project into“single pig” mode.The pig-fruit model and the "pig-marsh-fruit" integrated model were compared.From the perspective of economic benefits,the ecological park has a high return on investment,good economic returns,and strong capacity for sustainable development of the project.However,the initial one-time investment is large,so it is not suitable for the general farmer investment.A comparative analysis of the economic indicators of thethree models found that the “pig-marsh-fruit” model had the highest overall score,but there was a problem of imbalance in profitability.From the perspective of environmental effects,using the methods of energy value and energy flow analysis,the three cases are compared and analyzed.The environmental effects indicators of the “pig-marsh-fruit”model are better than the other two models,but there is still room for improvement in waste utilization.Through the analysis of the two perspectives of the ecological park,it is proved that the “pig-marsh-fruit” circular agricultural project has a high return on investment and the environmental emission reduction effect is outstanding.Suggestions for adjusting the profit structure of internal subsystems,improving the technical level of the manure treatment system,supporting the circular agricultural industrial chain,and providing differentiated support and subsidies by the government are proposed for the problems found in the research projects.Studying the“pig-marsh-fruit” circular agriculture project of the ecological park can provide theoretical basis and experience reference for the promotion and popularization of circular agriculture projects in the region or similar conditions.