Research On Green Growth Technology Investment Of Ports Mechanism Based On The Environmental Regulation

Port is an important driver of world economic growth,but also a major source of pollution in various countries and energy units.Under the new situation of global energy crisis and with environment continues to deteriorate;the port sector proposed the concept of green port.Although the idea of building a green port have reached a consensus;the methods and practice are still in the initiative stage.For the port authorities and the government priorities,the current issue is how to build and sustain the green growth for ports.This paper aims at the problem that the environmental regulation intensity affects the investment behavior of the oriented technological innovation.The introduction of the guidance of technological innovation:with high energy consumption,pollution emission characteristics of brown technology innovation,as well as resource conservation,environmental protection features of green technology innovation.How do the overall goal of environmental regulation achieve the port green growth through the brown technology innovation and green technology innovation investment mutual overflow.Based on the above mentioned,the neoclassical economic growth model is established.It is the optimal control model that the green growth of economic welfare and natural capital is the objective function,and the brown capital stock and green capital stock are the constraints.Based on the optimal control theory and the maximum principle,we obtain the expression of the elasticity of substitution between the environmental regulation intensity and the brown capital stock and the green capital stock.The control variable method are used to study correlation between the growth rate and elasticity of substitution in equilibrium and Brown/brown stock capital entity capital accumulation in green technology investment opportunities between the external cost and the capital stock and capital stock brown green alternative variables,and found that it has a negative correlation between the variable substitution and elasticity.Then study the relationship between the change and economic benefits of environmental regulation strength,results show that increase the strength of environmental regulation to improve economic welfare or promoting;but the intensity of environmental regulation high will block the economic growth of welfare.Based on the above analysis,this paper puts forward some adjustment measures and policy measures from the port and government level,and puts forward some suggestions on green technology investment from the angle of financial instruments.