环境规制、要素集聚与全要素生产率的门槛效应研究

A Study of the Threshold Effects of Environmental Regulation, Element Agglomeration and Total Factor Productivity

在非线性经济计量的理论基础上,以环境规制强度和要素集聚度为门槛变量构建面板门槛回归模型,探究环境规制、要素集聚对环境全要素生产率及其分解的影响力度。结果表明,环境规制对环境全要素生产率及其分解分别存在双重、三重和单一门槛效应,要素集聚则分别存在三重、双重和双重门槛效应;省域环境规制强度和要素集聚度的作用效应出现了明显的"两极分化"现象;政府应适度控制环境规制力度,使环境规制强度向中等组转移,实现环境全要素生产率的正外部性。此外,各省市不断跨越要素集聚度的门槛水平,是实现环境全要素生产率增长规模经济、促进经济环境协同发展的关键。

Based on the theory of nonlinear econometrics, this paper takes the environmental regulation intensity and the degree of element agglomeration as threshold variables to establish panel threshold regression model, in order to exploring the impact strength of environmental regulation and clement agglomeration on TFP and its decomposition. The results show that the environmental regulation presents dual, triple and single threshold effects to environmcntal TFP and its decomposition, while clement agglomeration presents triple, dual and dual threshold effects to them. The effects of the provincial environmental regulation intensity and the dcgrcc of clement agglomeration show an ap- parent polarized phenomenon. The government should moderately control the environmental regulation intensity and make it transfer to the medium group, so as to achieve the positive externalities of environmental TFP. Moreover, each province and city should continuously stride over the threshold level of element agglomeration degree, which is the key to achieving the scale economy of environmental TFP growth as well as promoting the collaborative development of economy and environment.