Spatial and temporal differences of land use carbon emissions and regional regulation countermeasures in Shenyang city
It is of great significance to scientifically measure land use carbon emissions and explore its spatial-temporal difference characteristics for formulating regional differentiated land use carbon emission regulation policies and promoting the realization of carbon neutrality.This paper takes Shenyang as the research area,uses direct and indirect carbon emission calculation methods to calculate land use carbon emissions from 2009 to 2020,and analyzes the temporal change and spatial distribution characteristics of land use carbon emissions.By combining the economic contribution coefficient of carbon source,ecological carrying coefficient of carbon sink,carbon footprint pressure index and carbon emission risk index with GIS spatial analysis method,the land use carbon emissions are divided and the regulation policies for optimizing the land use carbon emissions in different regions are put forward.The results show that the overall trend of total carbon emissions in the study area from 2009 to 2020 is consistent with that of net carbon emissions,and construction land is the main carbon source.The total amount of carbon sink shows a trend of first decreasing and then increasing,with forest land having the largest total carbon absorption and contributing the most to the carbon sink.High carbon emissions are mainly concentrated in Xinmin city,while low carbon emissions are mainly located in Heping district,Shenhe district,Huanggu district and Dadong district.The spatial distribution of the economic contribution coefficient of carbon source shows a decreasing trend in circles,and the spatial distribution of the ecological carrying coefficient of carbon sink shows a trend of high in the west and low in the east,and the lowest in the middle.The overall change range of carbon footprint pressure index is small,showing a fluctuating upward feature,which is consistent with the trend of carbon emissions.The overall carbon emission risk level is dominated by low and medium carbon emission risk areas,and the central urban area has the highest risk level.The research is divided into three types:land use carbon emission source optimization area,total carbon control area and carbon sink function area.According to the characteristics of different regions,the regulation policies for optimizing economic development and land use carbon emissions in different regions are proposed from two aspects:industrial structure adjustment and planning transmission,so as to provide a basis for optimizing land use structure and formulating carbon emission reduction policies.It is of great significance to the development of regional low-carbon economy.
land usecarbon emissionspatial and temporal differenceregulation policyShenyang city
万方数据
维普
