Urban green-blue infrastructures(GBls)are increasingly gaining attention in the pursuit of carbon neutrality,particularly within residential areas.With this background,this study established an integrated quantitative...Urban green-blue infrastructures(GBls)are increasingly gaining attention in the pursuit of carbon neutrality,particularly within residential areas.With this background,this study established an integrated quantitative framework to assess both direct and indirect carbon reduction benefits of urban GBls,by leveraging Life Cycle Assessment approach to precisely calibrate the carbon sequestration benefits of three typical urban GBls(green roofs,sunken green spaces,and rain gardens)under three different scenarios and building a carbon sequestration database that includes 36 local plant species in Shanghai.The research results indicate that GBls have a reducing effect on carbon emissions in urban residential areas.If extrapolating the simulation results to the city scale,the preliminary estimation suggests that the construction of GBls within residential areas in Shanghai can achieve a carbon sink of approximately 540.54 million tCOzeq per year.This level of carbon sequestration is equivalent to 32%of Shanghai's annual carbon emissions.It is evident that the construction of GBls possesses significant potential in carbon reduction benefits and for achieving urban carbon neutrality strategies.展开更多
Prior research has consistently demonstrated that urban economic and social systems adhere to the empirical scaling law.Furthermore,a plethora of evidence,including the scale-free networks of energy metabolism,the all...Prior research has consistently demonstrated that urban economic and social systems adhere to the empirical scaling law.Furthermore,a plethora of evidence,including the scale-free networks of energy metabolism,the allometric growth patterns of species and populations,and the scaling law relationship between exergy and transformity in biosphere systems across various levels,indicates that urban ecosystems exhibit multi-level scaling law characteristics in energy metabolism under self-organization,alongside significant human activity imprints.This study synthesizes these findings to hypothesize that urban ecological components are also aligned with system-level scaling theory within the urban metabolism framework.This encompasses:1)the existence of multistable coexistence and mutual transformation phenomena,mirroring the dynamic nature of scaling laws;and 2)a nuanced balance between the ecosystem and the socio-economic system,particularly in the realms of spatial competition and output efficiency.The ecosystem scaling theory hypotheses of urban metabolic processes offer a theoretical foundation for identifying ecological security tipping points,which are pivotal in the strategic decision-making for ecological planning and management in the future.展开更多
文摘Urban green-blue infrastructures(GBls)are increasingly gaining attention in the pursuit of carbon neutrality,particularly within residential areas.With this background,this study established an integrated quantitative framework to assess both direct and indirect carbon reduction benefits of urban GBls,by leveraging Life Cycle Assessment approach to precisely calibrate the carbon sequestration benefits of three typical urban GBls(green roofs,sunken green spaces,and rain gardens)under three different scenarios and building a carbon sequestration database that includes 36 local plant species in Shanghai.The research results indicate that GBls have a reducing effect on carbon emissions in urban residential areas.If extrapolating the simulation results to the city scale,the preliminary estimation suggests that the construction of GBls within residential areas in Shanghai can achieve a carbon sink of approximately 540.54 million tCOzeq per year.This level of carbon sequestration is equivalent to 32%of Shanghai's annual carbon emissions.It is evident that the construction of GBls possesses significant potential in carbon reduction benefits and for achieving urban carbon neutrality strategies.
基金supported by the Key Projects of National Natural Science Foundation of China(No.52430003)the National Natural Science Foundation of China(No.52481540200)the Fundamental Research Funds for the Central Universities(China).Special thanks to the Young Talent Award committee of the FESE journal.
文摘Prior research has consistently demonstrated that urban economic and social systems adhere to the empirical scaling law.Furthermore,a plethora of evidence,including the scale-free networks of energy metabolism,the allometric growth patterns of species and populations,and the scaling law relationship between exergy and transformity in biosphere systems across various levels,indicates that urban ecosystems exhibit multi-level scaling law characteristics in energy metabolism under self-organization,alongside significant human activity imprints.This study synthesizes these findings to hypothesize that urban ecological components are also aligned with system-level scaling theory within the urban metabolism framework.This encompasses:1)the existence of multistable coexistence and mutual transformation phenomena,mirroring the dynamic nature of scaling laws;and 2)a nuanced balance between the ecosystem and the socio-economic system,particularly in the realms of spatial competition and output efficiency.The ecosystem scaling theory hypotheses of urban metabolic processes offer a theoretical foundation for identifying ecological security tipping points,which are pivotal in the strategic decision-making for ecological planning and management in the future.
