Urban green innovation(UGI)is essential to environmental protection,ecological conservation,and high quality economic growth.Using green patents,our study assessed the level of UGI of 287 Chinese cities at and above t...Urban green innovation(UGI)is essential to environmental protection,ecological conservation,and high quality economic growth.Using green patents,our study assessed the level of UGI of 287 Chinese cities at and above the prefecture level.Then,using the Dagum Gini coefficient,kernel density estimation(KDE),and con‐vergence models,we examined regional differences,distribution dynamics,and convergence of UGI across China.The study’s findings are as follows:(1)Overall,regional differences in UGI tended to narrow,and the main contributor to these differences was the difference between economic zones.(2)KDE showed that the level of UGI was rising,which was polarized within each economic zone.(3)The national UGI in economic zones other than the Northeast and Middle Yellow River Economic Zones featured significantσconvergence,while each economic zone showed absolute and conditionalβconvergence.展开更多
The development of the climate-change-mitigation technology has received widespread attention from both academic and policy studies.Nevertheless,very few studies have explained how and why economies contribute differe...The development of the climate-change-mitigation technology has received widespread attention from both academic and policy studies.Nevertheless,very few studies have explained how and why economies contribute differently to global development.This paper decomposed the development of the global climate-change-mitigation technology,proxied by patent-based indicators,from 1996 to 2015 into several predefined factors.The results show that the worldwide surge of climate-change-mitigation-technology patents from 1996 to 2011 is driven by increased concentration on green invention,improved research intensity,and enlarged economic scale,while the falling of patent counts from 2011 to 2015 is predominantly due to less concentration on green invention.Among different climate-change-mitigation technologies,the type-specific development is attributed to different dominant factors,and the resulting priority change can reflect the shift of both global research and development(R&D)resource and market demand.Regarding regional contributions,the resulting economy-specific contributions to each driving factor can be used to design the policies to promote the development of the global climate-change-mitigation technology.展开更多
基金supported by the National Natural Science Foun‐dation of China[Grant No.72004124,72373084]Shandong Provin‐cial Education Department,China[Grant No.2022RW-064]+1 种基金Depart‐ment of Science and Technology of Shandong Province,China[Grant No.2022RKY04002]Humanities and Social Sciences Project of Shan‐dong Province,China[Grant No.2022-YYJJ-32].
文摘Urban green innovation(UGI)is essential to environmental protection,ecological conservation,and high quality economic growth.Using green patents,our study assessed the level of UGI of 287 Chinese cities at and above the prefecture level.Then,using the Dagum Gini coefficient,kernel density estimation(KDE),and con‐vergence models,we examined regional differences,distribution dynamics,and convergence of UGI across China.The study’s findings are as follows:(1)Overall,regional differences in UGI tended to narrow,and the main contributor to these differences was the difference between economic zones.(2)KDE showed that the level of UGI was rising,which was polarized within each economic zone.(3)The national UGI in economic zones other than the Northeast and Middle Yellow River Economic Zones featured significantσconvergence,while each economic zone showed absolute and conditionalβconvergence.
基金This work was supported by the National Natural Science Foundation of China(Grant Nos.72003145,72074184,and 71603148)China Postdoctoral Science Foundation(Grant No.2020M683437)the Humanities and Social Science Research Project of the Ministry of Education of China(Grant No.18YJC790194).
文摘The development of the climate-change-mitigation technology has received widespread attention from both academic and policy studies.Nevertheless,very few studies have explained how and why economies contribute differently to global development.This paper decomposed the development of the global climate-change-mitigation technology,proxied by patent-based indicators,from 1996 to 2015 into several predefined factors.The results show that the worldwide surge of climate-change-mitigation-technology patents from 1996 to 2011 is driven by increased concentration on green invention,improved research intensity,and enlarged economic scale,while the falling of patent counts from 2011 to 2015 is predominantly due to less concentration on green invention.Among different climate-change-mitigation technologies,the type-specific development is attributed to different dominant factors,and the resulting priority change can reflect the shift of both global research and development(R&D)resource and market demand.Regarding regional contributions,the resulting economy-specific contributions to each driving factor can be used to design the policies to promote the development of the global climate-change-mitigation technology.
