Study On Land Use Change And Its Carbon Emission Effect In The City Of Ji’nan

The global warming caused by the increase of temperature and the enhancement of greenhouse effect is a serious ecological and environmental problem facing mankind.The main reason is that greenhouse gases such as carbon dioxide is released from human activities such as fossil fuel combustion and land use change.Land is not only a natural carrier of the ecosystem,but also a carrier of space and society carrying all human economic and social activities,which is closely related to human activities.With the continuous advancement of urbanization,the phenomenon of the carbon cycle balance of land ecosystem by changing the type of land use is becoming more and more obvious.Therefore,exploring the land use change and its carbon emission effect can provide theoretical basis for relevant carbon emission reduction measures,and help build a low-carbon,resource saving and environment-friendly society.Considering Ji’nan city land use change significantly in recent years,rapid economic development,the academic circles in the typical city of Ji’nan city land use change and its effect on carbon emissions and less(mainly concentrated in the research of the dynamic change of land use,therefore,)this paper chooses Ji’nan city as the research object,has certain innovation significance.On the one hand,the research on the remote sensing image data in 2000,2005,2010 and 2015 as the data source,combined with the field survey,the use of GIS technology,the method of statistic analysis,analysis of the process of land use change in Ji’nan City,summarizes the research period of Ji’nan city land use change,reveals the change of land use in Ji’nan city the spatial pattern and its characteristics.The results show that:(1)the area of construction land in Ji’nan city during the study period increased significantly,from main farmland,forest land and unused land;and the farmland,woodland,water area and unused land have different degrees of reduction,mainly from construction land and cultivated land.(2)the spatial construction land change shows a tendency to diffuse from the central city to the surrounding radiation,while the unused land and the woodland shift to the southeast.On the other hand,based on the existing research of land use changes in carbon emissions,according to the Ji’nan municipal research period land use data and energy consumption data,using econometric model,calculate Ji’nan City carbon uptake,carbon emissions and net carbon emissions,try to make the list of carbon emissions in Ji’nan City,a detailed analysis of changes the trend,and the changes of carbon uptake and emission /correlation analysis of land use on carbon emissions effect of land use change.The results showed that:(1)the carbon absorption in woodland dominated by Ji’nan was decreasing during the research period,while the carbon emissions from construction land increased gradually.Therefore,net carbon emissions increased year by year.(2)the carbon emissions were affected most by the change of the construction land,while the cultivated land and the woodland were mainly affected by the change of carbon absorption.Based on the above research conclusion,based on low-carbon land use oriented,puts forward the optimization of land use structure,rational utilization of land resources,carbon emission reduction measures,in order to Ji’nan city in the future in the development of the economy and reduce damage to the environment,alleviate the contradiction between economic development and ecological environment,the establishment of low-carbon development model,promote the balance of carbon cycle in ecosystem.