Research on the spatiotemporal pattern changes of urban carbon sources and sinks:a case study of Ningbo
Accounting and dynamic monitoring of carbon sources and sinks in cities are indispensable for realizing carbon-neutral development paths.Based on the time series of LUCC data and statistical data of various sectors in Ningbo from 2005 to 2020,this paper uses the IPCC carbon accounting method and the InVEST model to dynamically analyze the characteristics of changes in the spatial and temporal patterns of urban carbon sources and sinks in Ningbo since 2005,in an attempt to reveal its regional differences and carbon surplus.The results show that:(1)Since 2005,Ningbo's total carbon emissions have increased rapidly,which reached 7.70×109 t in 2013,and then declined slightly,remained at around 6.75×109 t overall;among them,the industrial sector is the largest source of carbon emissions,accounting for more than 80%of the total carbon emissions.(2)Between 2005 and 2020,Ningbo's carbon stock first declined and then increased,by 2010,it had decreased by 0.10×109 t,and by 2020,it had increased by 0.23×109 t,with a cumulative increase of 1.31×107 t;among land types,forest land has the most significant effect in increasing sinks,while arable land is less effective.(3)The spatial net carbon emission intensity has been growing faster in the core area of Ningbo than that in the peripheral areas.The Ningbo government should take measures to reduce carbon sources and increase carbon sinks,and promote the coordinated development of low carbon in all regions through the establishment of an inter-regional carbon sink compensation mechanism.
carbon sourcecarbon sinknet carbon emission intensityspatial and temporal patterns
NETL
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万方数据
