With the increasing popularity of ecological civilization and sustainable development,enterprises should consider environmental protection measures in their operations in addition to pursue their economic interests.Th...With the increasing popularity of ecological civilization and sustainable development,enterprises should consider environmental protection measures in their operations in addition to pursue their economic interests.This paper establsihes a closed-loop supply chain network model composed of multiple suppliers,manufacturers,retailers,recyclers,and demand markets—regarding their dual goals of the profit maximization and the minimization of carbon emissions.The conditions necessary for establishing overall equilibrium and an equilibrium model of the entire closed-loop supply chain network are determined by applying variational inequality and dual theory.A modified projection contraction algorithm is used to design a model-solving program.Finally,using numerical examples,the paper conducts a comparative static analysis on important parameters such as the weight coefficients of environmental protection objectives and consumers'awareness of low-carbon environmental protection and attains some beneficial enlightenment on management.The results indicate that when the environmental protection objectives of a certain type of enterprise increases,both the economic benefits and environmental protection performance will improve;when the environmental protection objectives of all enterprises increases simultaneously,environmental protection performance improves significantly,but the changes in economic benefits of different enterprises are inconsistent and profit coordination is more complex.Although consumers’awareness of low-carbon preference could improve environmental performance,it reduces the overall profits of network members and the entire closed-loop supply chain network as a whole.The above conclusions can be used as a reference for the government in designing low-carbon environmental protection policy and in closed-loop supply chain research.展开更多
It is a basic requirement of eco-garden city construction to establish a biodiversity protection system,and also a concrete requirement of ecological development for an eco-garden city.Biodiversity protection system o...It is a basic requirement of eco-garden city construction to establish a biodiversity protection system,and also a concrete requirement of ecological development for an eco-garden city.Biodiversity protection system of the eco-garden city includes the following contents:clarifying hierarchical requirements of the urban biodiversity protection,that is,classified protection of planning hierarchy and biodiversity hierarchy;achieving biodiversity protection via the planning system;establishing a quantity index system of urban biodiversity protection.Major strategies for establishing the biodiversity protection system were given as below:giving proper ecological planning and design;providing policy and law support;enhancing the construction of humanistic and education environment.Study on biodiversity protection system in eco-garden city may become an important support for the future quality evaluation of urban construction.展开更多
基金supported by Humanity and Social Science Foundation of Ministry of Education of China[Grant number 17YJA630130].
文摘With the increasing popularity of ecological civilization and sustainable development,enterprises should consider environmental protection measures in their operations in addition to pursue their economic interests.This paper establsihes a closed-loop supply chain network model composed of multiple suppliers,manufacturers,retailers,recyclers,and demand markets—regarding their dual goals of the profit maximization and the minimization of carbon emissions.The conditions necessary for establishing overall equilibrium and an equilibrium model of the entire closed-loop supply chain network are determined by applying variational inequality and dual theory.A modified projection contraction algorithm is used to design a model-solving program.Finally,using numerical examples,the paper conducts a comparative static analysis on important parameters such as the weight coefficients of environmental protection objectives and consumers'awareness of low-carbon environmental protection and attains some beneficial enlightenment on management.The results indicate that when the environmental protection objectives of a certain type of enterprise increases,both the economic benefits and environmental protection performance will improve;when the environmental protection objectives of all enterprises increases simultaneously,environmental protection performance improves significantly,but the changes in economic benefits of different enterprises are inconsistent and profit coordination is more complex.Although consumers’awareness of low-carbon preference could improve environmental performance,it reduces the overall profits of network members and the entire closed-loop supply chain network as a whole.The above conclusions can be used as a reference for the government in designing low-carbon environmental protection policy and in closed-loop supply chain research.
文摘It is a basic requirement of eco-garden city construction to establish a biodiversity protection system,and also a concrete requirement of ecological development for an eco-garden city.Biodiversity protection system of the eco-garden city includes the following contents:clarifying hierarchical requirements of the urban biodiversity protection,that is,classified protection of planning hierarchy and biodiversity hierarchy;achieving biodiversity protection via the planning system;establishing a quantity index system of urban biodiversity protection.Major strategies for establishing the biodiversity protection system were given as below:giving proper ecological planning and design;providing policy and law support;enhancing the construction of humanistic and education environment.Study on biodiversity protection system in eco-garden city may become an important support for the future quality evaluation of urban construction.