厘清企业嵌入全球价值链(Global Value Chain,GVC)的环境影响及其机制是实现绿色发展的重要微观基础。本文提出嵌入GVC、能源消耗和企业环境绩效的统一分析框架,并基于微观企业数据开展实证研究。结果显示:嵌入GVC程度上升可以有效降低...厘清企业嵌入全球价值链(Global Value Chain,GVC)的环境影响及其机制是实现绿色发展的重要微观基础。本文提出嵌入GVC、能源消耗和企业环境绩效的统一分析框架,并基于微观企业数据开展实证研究。结果显示:嵌入GVC程度上升可以有效降低企业的污染排放强度。机制分析表明,嵌入GVC主要通过投入结构转型效应促进企业使用进口中间品替代能源消耗,降低企业的能源投入强度,进而提升环境绩效。进一步引入国内环境规制差异的分析发现,中国企业嵌入GVC的投入结构转型效应是基于劳动力比较优势参与国际分工的结果,而非为了规避国内环境规制主动进行的污染外包。动态机制的检验结果显示,嵌入GVC主要通过存续企业“内部减排”和“市场份额再分配”的集约边际,以及“清洁企业进入”的扩展边际降低行业排放强度。在企业退出机制较完善的地区,还可通过“污染企业退出”的扩展边际发挥作用。本文对于新发展阶段下以高水平对外开放协同推进降碳、减污、扩绿、增长具有一定的启示意义。展开更多
Consider the Cauchy problems for an n-dimensional nonlinear system of fluid dynamics equations. The main purpose of this paper is to improve the Fourier splitting method to accomplish the decay estimates with sharp ra...Consider the Cauchy problems for an n-dimensional nonlinear system of fluid dynamics equations. The main purpose of this paper is to improve the Fourier splitting method to accomplish the decay estimates with sharp rates of the global weak solutions of the Cauchy problems. We will couple togeth- er the elementary uniform energy estimates of the global weak solutions and a well known Gronwall＇s inequality to improve the Fourier splitting method. This method was initiated by Maria Schonbek in the 1980＇s to study the op- timal long time asymptotic behaviours of the global weak solutions of the nonlinear system of fluid dynamics equations. As applications, the decay esti- mates with sharp rates of the global weak solutions of the Cauchy problems for n-dimensional incompressible Navier-Stokes equations, for the n-dimensional magnetohydrodynamics equations and for many other very interesting nonlin- ear evolution equations with dissipations can be established.展开更多
文摘厘清企业嵌入全球价值链(Global Value Chain,GVC)的环境影响及其机制是实现绿色发展的重要微观基础。本文提出嵌入GVC、能源消耗和企业环境绩效的统一分析框架,并基于微观企业数据开展实证研究。结果显示:嵌入GVC程度上升可以有效降低企业的污染排放强度。机制分析表明,嵌入GVC主要通过投入结构转型效应促进企业使用进口中间品替代能源消耗,降低企业的能源投入强度,进而提升环境绩效。进一步引入国内环境规制差异的分析发现,中国企业嵌入GVC的投入结构转型效应是基于劳动力比较优势参与国际分工的结果,而非为了规避国内环境规制主动进行的污染外包。动态机制的检验结果显示,嵌入GVC主要通过存续企业“内部减排”和“市场份额再分配”的集约边际,以及“清洁企业进入”的扩展边际降低行业排放强度。在企业退出机制较完善的地区,还可通过“污染企业退出”的扩展边际发挥作用。本文对于新发展阶段下以高水平对外开放协同推进降碳、减污、扩绿、增长具有一定的启示意义。
文摘Consider the Cauchy problems for an n-dimensional nonlinear system of fluid dynamics equations. The main purpose of this paper is to improve the Fourier splitting method to accomplish the decay estimates with sharp rates of the global weak solutions of the Cauchy problems. We will couple togeth- er the elementary uniform energy estimates of the global weak solutions and a well known Gronwall＇s inequality to improve the Fourier splitting method. This method was initiated by Maria Schonbek in the 1980＇s to study the op- timal long time asymptotic behaviours of the global weak solutions of the nonlinear system of fluid dynamics equations. As applications, the decay esti- mates with sharp rates of the global weak solutions of the Cauchy problems for n-dimensional incompressible Navier-Stokes equations, for the n-dimensional magnetohydrodynamics equations and for many other very interesting nonlin- ear evolution equations with dissipations can be established.
