技术进步方向、城市用地规模和环境质量

发布时间：2018-06-07 17:50

本文选题：技术进步方向 + 城市用地规模　；参考：《经济研究》2014年10期

【摘要】：国内研究更多关注技术进步对环境质量的作用,却并未重视技术进步方向变化可能对环境产生的影响。本文构建两部门内生经济增长模型,数理演绎技术进步方向和城市用地规模变化与环境质量的耦合过程,结合我国经济数据数值模拟不同技术进步方向对城市用地规模和环境质量的影响。模型结果发现,提升环境质量可以通过控制城市用地规模和清洁技术创新方式实现,当城市和农村的用地需求外生给定时,环境污染完全取决于清洁与非清洁技术的水平,当城市和农村的用地需求由技术进步内生决定时,清洁和非清洁技术都会对环境质量有直接作用,同时还会通过改变土地的使用类型和用地规模影响环境质量。数值模拟结果发现,如果保持我国现阶段的技术进步方向不变,环境质量、城市用地和经济产出将难以实现相容发展,环境质量的提升对城市用地和经济产出存在"挤出"效应,而转变技术进步方向使清洁技术强度足够大时,环境质量和经济增长可以实现共生发展。
[Abstract]:Domestic research pays more attention to the effect of technological progress on environmental quality, but does not pay attention to the possible impact of the direction of technological progress on the environment. This paper constructs a two-sector endogenous economic growth model, mathematical deduction of the direction of technological progress and the coupling process between the scale change of urban land and environmental quality. The effects of different technological advances on the scale of urban land use and environmental quality are simulated numerically with economic data in China. The model results show that the improvement of environmental quality can be achieved by controlling the scale of urban land use and innovation of clean technology. When the demand for urban and rural land is exogenous, environmental pollution depends entirely on the level of clean and non-clean technologies. When the demand for land in urban and rural areas is determined endogenously by technological progress, both clean and non-clean technologies will have a direct effect on environmental quality, and will also affect environmental quality by changing the type and scale of land use. The numerical simulation results show that, if the direction of technological progress in our country remains unchanged at the present stage, the environmental quality, urban land use and economic output will be difficult to achieve compatible development. The improvement of environmental quality has a "crowding out" effect on urban land use and economic output. When the intensity of clean technology is large enough to change the direction of technological progress, the symbiotic development of environmental quality and economic growth can be realized.
【作者单位】：华东师范大学商学院;吉林大学数量经济研究中心;吉林大学商学院;东北师范大学经济学院;
【基金】：教育部新世纪优秀人才项目(NCET-12-0818) 国家社科基金项目(14BJL031,12CJY007) 教育部人文社科基金项目(13YJA790012) 吉林省社科基金项目(2013B44) 吉林大学青年学术领袖培育计划项目(2012FRLX16)的阶段性成果
【分类号】：X2;F299.23;F124.3

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