| Urban land is the foundation and security of urban development, the carrier of urban social and economic activities. Along with the process of urbanization and industrialization of our country, there come such questions as extensive utilization of land、deterioration of ecological environment and so on,which create contradiction between human and land and hinder the sustainable development of the city.In this case, making full use of the stock urban land, carrying out the urban internal tapping,using urban land economicaily and intensivly become the basic way to solve the problem above.At the same time, new problems the global climate change brings is threatening human’s survival and development, people gradually realized that in order to achieve sustainable development, develop low carbon economy would be the only way,and also the influence of land use on carbon emissions can not be ignored.The Introduce of the concept of low-carbon economy to the evaluation of urban land intensive utilization conforms to the objective need of sustainable development, it is of great significance in controlling the urban scale, improving the efficiency of land use and promoting the benign development of the economy.On the basis of combing the research home and abroad, this article systemly elaborated the low-carbon economy and related conception of land intensive utilization.Introducting the concept of low-carbon economy to the evaluation of land intensive utilization, this article constructes PSR model showing the relationship in land use,and then analyzes the problems existing in the present situation of land use in zhengzhou city, evaluates the status of land use in Zhengzhou City in 1998—2012.Through the research, this article gets these conclusions:(1) The decoupling state of Zhengzhou City over the years of low carbon economic development and land intensive use level fluctuates between strong and weak decoupling, which refelects that there is a significant positive correlation between low carbon economy development and intensive land utilization, promoted the development of intensive land utilization effectively. But ‘Rich in coal,poor in oil and less gas’ as Zhengzhou, low-carbon economy develops slowly which causes the decoupling condition is not ideal in some years.(2)There is trend of low carbonization and intensive of Zhengzhou city land intensive utilization. From the point of intensive state,it is extensive use from 1998 to 2004, and is less extensive use from 2005 to 2009,and is in the stage of basic intensive utilization from 2010 to 2012.But the low carbon intensive land use level in Zhengzhou city is relatively low, it still doesn’t reach the intensive utilization status and the intensive status is not ideal.(3)The coordination coefficient of each subsystem in Zhengzhou city land use is low, the status of each subsystem presents uneven development, which is aiso an important reason that the level of zhengzhou city land intensive utilization in the concept of low carbon is low. But overall, the degree of coordination between each subsystem of Zhengzhou city land use is on the rise, which fits well for the actual situation of low carbon intensive land use level changes, reflects the gap between the current state of the low carbon intensive utilization and intensive targets, and also reflects that the model is of high credibility.In the end,according to the evaluation results and conclusions,this paper puts forward relevant policy suggestions,which aim at providing theoretical basis for promoting low carbon, intensive urban land utilization and realizing sustainable development of economy in zhengzhou city. |
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