Study On Land Carbon Emission And Carbon Compensation In Gansu Province Under The Background Of Double Carbon

With the continuous exploration and exploitation of natural resources by human beings,the rapid socio-economic development and the intensification of energy consumption have led to a large amount of greenhouse gas emissions,resulting in a series of climate change problems.In order to protect the environment,countries around the world have implemented policy measures for low carbon emission reduction.China is a major energy-consuming and carbon-emitting country,and in2020,General Secretary Xi Jinping proposed the development strategies and targets of"carbon peaking"and"carbon neutrality".All human activities are inseparable from the support of land,and the implementation of low-carbon policies is often inseparable from land use.Therefore,this paper takes 86 counties in Gansu Province and Jiayuguan City as the research object,and uses land use data,energy statistics and socio-economic data every 5 years to measure the land use carbon emissions and carbon absorption of county units in Gansu Province from 2000 to 2020 using the carbon emission coefficient method.The temporal and spatial differences between land use carbon emission and carbon absorption are analyzed;and based on the analysis of the economic contribution coefficient of land use carbon emission,carbon ecological carrying coefficient,per capita carbon footprint and carbon emission intensity in Gansu Province,the carbon compensation standard model is constructed with the net carbon emission as the carbon compensation benchmark value,and the carbon compensation amount for counties in Gansu Province in 2020 is calculated.By synthesizing the above-mentioned studies,the following results are obtained in this thesis:(1)In the past 20 years,the land use carbon emission in Gansu Province has been increasing continuously,from 9.36×10~7 t in 2000 to 2.73×10~8 t in 2020.the carbon absorption in the province is relatively stable compared with the carbon emission,and the land use carbon absorption has increased from 2.19×10~7 t in 2000to 2.22×10~7 t in 2020,although the trend is increasing.Although the trend is increasing,the growth amount is less and the carbon absorption capacity tends to be saturated.(2)Spatially,land use carbon emissions in Gansu Province show a more significant spatial clustering phenomenon,and the clustering areas are mostly concentrated in central and southeastern Longnan.Carbon emission hotspots are mainly centered in Lanzhou and Baiyin areas,while cold spots are centered in Linxia,Gannan and Longnan areas.Carbon emission centers migrate more significantly in the north-south direction,with obvious fluctuation trends and a trend of gradual integration.(3)The economic contributive coefficient of carbon emission in the province during 2000-2020 has increased,showing the spatial distribution characteristics of high in the west and low in the east,high in the north and low in the south.From the spatial distribution of carbon ecological support coefficient,most areas in the province have poor carrying capacity,showing the distribution characteristics of high in the southeast and low in the northwest,and the fluctuation changes are obvious.In terms of per capita carbon emission and carbon emission intensity,the per capita carbon footprint is increasing,and the county carbon balance of the province is on the verge of full imbalance.Carbon emission intensity is decreasing,and its changes tend to be balanced in space.(4)The study found that the province’s carbon compensation hotspot areas are clustered in some counties in Lanzhou City.The highest carbon compensation payment is in Chengguan District,Lanzhou City,with a payment of 11,824.899×10~4yuan,and the most compensated county is Wen County,Longnan City,with a compensation amount of 56.68×10~4 yuan.Based on the calculation results of carbon compensation amount,carbon emission and economic status,the province is divided into three regions,which are low carbon compensation zone,high carbon compensation zone and balanced development zone,and according to the different economic development strength and development endowment of each region,it provides suggestions for the formulation of corresponding low carbon emission reduction development policies.