Spatio-Temporal Evolution Pattern of Carbon Budget at County Level in Zhejiang Province
Climate change has attracted considerable attention globally,prompting China to introduce a"two-carbon"strategic goal by 2020.It is imperative to explore the spatio-temporal evolution pattern of carbon budget and promote low-carbon development.Taking county scale in Zhejiang province as the research object,this paper uses high spatial resolution carbon emission data and land use data to study the spatio-temporal change trend of carbon emission and carbon sink from 2000 to 2020,and uses bivariate clustering model to conduct spatio-temporal coupling analysis of the proportion of construction land and net carbon emission in each county,so as to provide reference for the performance evaluation of urban emission reduction and sinks.The results show that the total carbon dioxide emissions of the province increased from 34909600 tons in 2000 to 138384300 tons in 2020,an increase of about 2.96 times.From the perspective of spatial distribution,carbon dioxide emissions are high in northeast,low in southwest,high in coastal areas and low in inland areas.The total carbon sink decreased by 4.93%from 2000 to 2020,with an average annual decline rate of 0.25%.The regions with high carbon sink value mainly concentrated in the hilly areas of western Zhejiang in the northwest and southwest,while the regions with low carbon sink value mainly concentrated in the coastal areas in the east.The spatial-temporal correlation between land use efficiency and net carbon emission in Zhejiang province shows that the proportion of construction land is positively correlated with net carbon emission.With the passing of time,the number of districts and counties with high development intensity and high emission increased year by year,mainly concentrated in Hangzhou,Ningbo and other places.In particular,the number of counties with high development intensity and low emission increased year by year from 2000 to 2010,suggesting that it is necessary to pay attention to emission reduction in land development.The research of this paper provides valuable enlightenment for Zhejiang province to actively explore the low-carbon and efficient development model.
carbon budget accountingland use efficiencyspatio-temporal evolution patternremote sensing monitoring
万方数据
维普
