关键词: 环境投入, 经济增长, 碳排放, 门槛模型

Abstract: The article concludes that the transfer of capital elements to the west deviates from the tranfer trend of environmental capital elements and economic gravity in contemporary China. The inland areas, especially the northeastern areas do not pay enough attention to the environmental protection, resulting in high carbon emissions and slow economic growth. With the help of the threshold model,this study finds that the economic growth is related to the environmental input and there is an inverted U-shape relationship between the environmental input and carbon emissions, so in the short term the environmental input can be controlled within the optimal investment range, which can not only stabilize the economic growth, but also control the carbon emissions effectively. According to estimate of the gray system, the goal of carbon emission reduction in 2030 cannot be achieved. Thus in the long term, some adjustments should be made through the promotion of green technology, the development of the recycling economy and the construction a green financial system.

Key words: Environmental Investment, Economic Growth, Carbon Emissions, Threshold Model