村庄用地变化碳效应时空分异及影响因素分析:以江苏省为例OA

It is an important issue in low-carbon transformation in territorial spatial planning to promote the efficiency of village land use.In order to support the formulation of refined and differentiated carbon-reduction policies/regulations for Jiangsu Province,we explored the carbon emission effects of village land-use change and their multi-factor drivers from 1990 to 2020 in the province.Specifically,with the employment of carbon-emission coefficients,geometric-centroid analy-sis,Moran's I,and stepwise multiple regression methods,the spatio-temporal patterns of carbon emissions and the carbon effects of land-use change at the county level in Jiangsu,together with their influencing factors were systematically ana-lyzed.The results show that:(1)Carbon emissions of village land in individual counties basically show a net emission effect,while net emissions per area has declined steadily and displays significant positive spatial autocorrelation.(2)Car-bon-emission of village land transferred from other land use types in individual counties show a net emission effect as well,with a spatial pattern characterized by higher values in the south and west and lower values in the north and east.(3)Ac-cording to the global scale assessment,rural population density,distance of villages to rivers,and the proportion of urban and mining land have higher impacts on the carbon emission of village land-use change than other factors.(4)In the an-nual-based assessment,it is shown that the village production and living activities generated substantial carbon emissions.Besides,rural population density,distance to rivers,and the share of primary-industry output are the primary factors influ-encing the carbon-emission of village land transferred from other land use types,among which population exerts a relatively long-term influence.The determinants of overall carbon effects are similar to those of inflow carbon effects.Our research achievements could provide guidance for further refining localized carbon-reduction policies and enhancing village land-use efficiency.