In order to investigate the impacts of government policy and market environment on the development of renewable energy,this paper constructs a computable general equilibrium(CGE)model to simulate the impacts of policy...In order to investigate the impacts of government policy and market environment on the development of renewable energy,this paper constructs a computable general equilibrium(CGE)model to simulate the impacts of policy scenarios,market scenarios and policy-market scenarios on renewable energy output and investment,energy structure,economy and environment based on China’s input-output extension table in 2020.The results show that:the subsidy can optimize the energy structure and power structure,and non-hydropower renewable energy represented by wind power and solar power will become a new force of energy supply in China;the market environment of traditional energy price rising will increase the output and investment of renewable energy,and the energy policy can offset the negative impacts of traditional energy price downward on renewable energy;the impacts of subsidy on GDP,employment and emission reduction is positive;the GDP and employment is benefit from the market environment of traditional energy price downward,but the environment is damaged due to stimulating energy consumption.Finally,the government should support the renewable energy through energy policy,and monitor the market risk of the price fluctuation of traditional energy,so as to make the renewable energy become the key force of the transition of economic development mode and the focus of the breakthrough of energy environment dilemma.The novelty of this paper lies in simultaneously constructing policy scenarios,market scenarios,and integrated policy-market scenarios to examine the development of renewable energy and its corresponding economic and environmental impacts under each type of scenario,while also validating the effectiveness of energy policies in mitigating market risks.展开更多
城市洪涝灾害常造成灾难性的生命和财产的损失,开展该研究对于洪涝灾害防治至关重要。已有研究多以从洪涝灾害风险或损失的单方面展开,且国内的研究区域多集中在降雨较多的南方城市。近年来北方城市极端暴雨事件频发,而相关研究却相对...城市洪涝灾害常造成灾难性的生命和财产的损失,开展该研究对于洪涝灾害防治至关重要。已有研究多以从洪涝灾害风险或损失的单方面展开,且国内的研究区域多集中在降雨较多的南方城市。近年来北方城市极端暴雨事件频发,而相关研究却相对较少。遭遇灾难之时,迫切需要对应急队伍的部署、救援物资分配等抢险行动,进行有效的决策支持。为此,必须运用众多统计学分析技术快速判断受灾带来的破坏程度。在灾害防御、减轻与救助的各项任务中,对经济损失进行评估是一项基础而重要的工作。基于此,本文以北方城市郑州2021年7月发生的特大暴雨洪涝灾害为例,基于动态CGE模型(Computable General Equilibrium,可计算的一般均衡模型)评估该城市外洪内涝的灾害经济损失。实证结果显示:从当期来看,2021年暴雨洪涝灾害的发生在不同程度上影响社会生产,暴雨洪涝灾害造成总产出的损失值区间为[3525.652,40536.761]亿元。灾害的累积效应也不容小觑,暴雨洪涝灾害的发生不仅会影响当年的社会经济发展,也会对后期经济发展产生重大影响。若某一时期的灾情较重,后期社会经济所受影响甚至会高于当期灾害对经济系统的冲击。通过本文的研究为特大城市应对灾害风险提供了重要的参考和决策依据。展开更多
基金supported by the Research Project for 2025 by China Association of Trade in Services“Impact of AI Technology on Talent Structure in Cross-border E-commerce”(Project number:CATIS-PR-250125).
摘要In order to investigate the impacts of government policy and market environment on the development of renewable energy,this paper constructs a computable general equilibrium(CGE)model to simulate the impacts of policy scenarios,market scenarios and policy-market scenarios on renewable energy output and investment,energy structure,economy and environment based on China’s input-output extension table in 2020.The results show that:the subsidy can optimize the energy structure and power structure,and non-hydropower renewable energy represented by wind power and solar power will become a new force of energy supply in China;the market environment of traditional energy price rising will increase the output and investment of renewable energy,and the energy policy can offset the negative impacts of traditional energy price downward on renewable energy;the impacts of subsidy on GDP,employment and emission reduction is positive;the GDP and employment is benefit from the market environment of traditional energy price downward,but the environment is damaged due to stimulating energy consumption.Finally,the government should support the renewable energy through energy policy,and monitor the market risk of the price fluctuation of traditional energy,so as to make the renewable energy become the key force of the transition of economic development mode and the focus of the breakthrough of energy environment dilemma.The novelty of this paper lies in simultaneously constructing policy scenarios,market scenarios,and integrated policy-market scenarios to examine the development of renewable energy and its corresponding economic and environmental impacts under each type of scenario,while also validating the effectiveness of energy policies in mitigating market risks.
摘要城市洪涝灾害常造成灾难性的生命和财产的损失,开展该研究对于洪涝灾害防治至关重要。已有研究多以从洪涝灾害风险或损失的单方面展开,且国内的研究区域多集中在降雨较多的南方城市。近年来北方城市极端暴雨事件频发,而相关研究却相对较少。遭遇灾难之时,迫切需要对应急队伍的部署、救援物资分配等抢险行动,进行有效的决策支持。为此,必须运用众多统计学分析技术快速判断受灾带来的破坏程度。在灾害防御、减轻与救助的各项任务中,对经济损失进行评估是一项基础而重要的工作。基于此,本文以北方城市郑州2021年7月发生的特大暴雨洪涝灾害为例,基于动态CGE模型(Computable General Equilibrium,可计算的一般均衡模型)评估该城市外洪内涝的灾害经济损失。实证结果显示:从当期来看,2021年暴雨洪涝灾害的发生在不同程度上影响社会生产,暴雨洪涝灾害造成总产出的损失值区间为[3525.652,40536.761]亿元。灾害的累积效应也不容小觑,暴雨洪涝灾害的发生不仅会影响当年的社会经济发展,也会对后期经济发展产生重大影响。若某一时期的灾情较重,后期社会经济所受影响甚至会高于当期灾害对经济系统的冲击。通过本文的研究为特大城市应对灾害风险提供了重要的参考和决策依据。