Research On Urban Resource Metabolism Based On Ecological Network Analysis

The overuse of resources by humanity has resulted in significant ecological issues that are starting to endanger human survival and future advancement.As a result,the national strategy proposes to develop a green economy to achieve high-quality economic development and modernization in harmony with man and nature.Resource-based cities have more urgent needs for industrial restructuring and ecological management since they have more critical ecological and economic development issues than other cities.In order to realize the coordinated and sustainable development of resources and the environment,it is of great theoretical and practical significance for resource-based cities to study their resource metabolism processes and propose urban environmental governance and ecological industrial development paths in order to achieve industrial transformation and sustainable development.This paper examines the meaning,organization,and functioning of urban complex ecosystems,as well as the benefits and conditions of applying the theories of complex ecosystems,urban resource metabolism,ecological network analysis,and emergy analysis.As a result,it offers a theoretical framework and practical approaches for the investigation of resource metabolism in resource-based cities.This thesis aims at the sustainable development of resource-based cities,clarifies the connotation of composite ecosystem of resource-based cities,uses multidisciplinary methods such as system analysis,ecological network analysis and emergy analysis theory,combines qualitative analysis and quantitative model evaluation,constructs an ecological network model and resource metabolism evaluation index system for resource-based cities,and investigate the mechanism of resource metabolism.Firstly,environmental meta-analysis approaches such as flow analysis,control analysis,and utility analysis are used to analyze the network’s intricate structural distribution and functional interactions.Second,the ascending analysis model evaluates the overall effectiveness of the network’s material and energy flow.The next step is to build a resource metabolism emergy evaluation index system from natural,social,economic,and sustainability aspects,in accordance with the most recent emergy benchmark and emergy conversion rate,in order to obtain the solar emergy contained in various system resources,combine this with emergy theory and composite ecosystem theory,and then make an objective assessment of the relationship between resources,the environment,and economic activities.The characteristics of the industrial structure and development are taken into consideration when building the ecological network model of Longkou City’s resource metabolism system as an example for applied study.The solar emergy is used to consistently measure the system flow,examine the city’s resource metabolism procedure,and assess the degree and sustainability of the city’s resource metabolism.The following are the primary research findings:(1)The gross urban product is favorably connected with changes in the system’s metabolic flow,although industry development is uneven,with strong growth in profitable sectors and sluggish overall development in emerging ones;(2)It is crucial to hasten the creation and application of clean energy as well as the decrease of waste emissions;(3)In Longkou,the socio-economic system is less resistant to disruption,the degree of symbiosis needs to be increased,and collaboration and resource sharing between various industrial chains need to be boosted.Based on the study’s findings,policy recommendations for boosting resource sharing,balancing industrial expansion,optimizing energy systems,and bolstering ecological redevelopment are put forth.