Investigating the spatio-temporal transmission features and process of novel coronavirus disease 2019(COVID-19)mitigation strategies are of great practical significance to understand the development of COVID-19 and es...Investigating the spatio-temporal transmission features and process of novel coronavirus disease 2019(COVID-19)mitigation strategies are of great practical significance to understand the development of COVID-19 and establish international cooperation for prevention and control.In this paper,the cumulative number of confirmed cases,number of confirmed cases per day and cumulative number of deaths,were used to compare transmission paths,outbreaks timelines,and coping strategies of COVID-19 in China and the US.The results revealed that:first,the COVID-19 outbreaks in both China and the US exhibited a 6-week initiation stage.In China,the COVID-19 erupted in late January.It lasted only a short period of time and was almost completely contained within 6-8 weeks.But the COVID-19 erupted in early March in the US and was still in the peak or post-peak stage.Second,in China,the COVID-19 emerged in Wuhan and spread to other regions of Hubei Province and then nationwide,exhibiting a cross('+')-shaped of spread with Wuhan city as the center.Importantly,the COVID-19 in China had a large concentration and there were no national outbreaks.In contrast,the COVID-19 in the US first spread through New York and the western and eastern coasts but has since emerged throughout the entire country.Third,the lack of emergency response planning in both countries in the early stage(about 6-week)hampered COVID-19 prevention.However,actively high-pressure prevention and control measures were used to basically control COVID-19 in early March in China.And then China has gradually resumed business and production activities.Unfortunately,the US government missed the best opportunity to contain the epidemic.Faced with the choice between economic recovery and coronavirus containment,the US removed the quarantine and restriction measures too early.The COVID-19 is continuing to spread in the country and blossom everywhere,still showing no signs of receding.展开更多
Recent years have witnessed rapid and widespread economic growth in regions involved in China’s Belt and Road Initiative(BRI),mainly due to the construction of six economic corridors.This paper aims to quantify the l...Recent years have witnessed rapid and widespread economic growth in regions involved in China’s Belt and Road Initiative(BRI),mainly due to the construction of six economic corridors.This paper aims to quantify the levels of six economic corridors according to the socioeconomic development levels in the BRI regions.Here,a gridded socioeconomic development index was first created,and a dividing line was drawn to reveal the distribution characteristics of socioeconomic development in the BRI regions.A classification method was then applied to identify local development levels.Finally,we created an economic corridor development index(ECDI)to evaluate the progress of six economic corridors.The results reveal spatial heterogeneity within the socioeconomic groups of BRI regions,which can be roughly divided into offshore(or Part A,50.54%)and inland(or Part B,49.46%)areas.Although both parts comprise roughly the same area,over 95%of the population is located in offshore regions.The China–Mongolia–Russia Economic Corridor has the highest development index due to a stable political environment and long-running cooperation.The China–Pakistan Economic Corridor suffers from the lowest ECDI but with strong development potential.Our methods can provide critical reference and practice for the future evaluation of the level of regional development.The results of this study can offer policymakers some insight into reducing socioeconomic inequality in the BRI regions.展开更多
基金The Strategic Priority Research Program of the Chinese Academy of Sciences(XDA23100202)International Partnership Program of Chinese Academy of Sciences(131A11KYSB20170117)+1 种基金Consultation and Evaluation Project of the Academic Divisions of the Chinese Academy of Sciences(2017ZWH018A-042)Special Project of Lancang-Mekong River Cooperation of the Ministry of Science and Technology of the People’s Republic of China "Agricultural Resources and Environmental Survey with Information Platform Construction in Lancang-Mekong River Basin"
基金Strategic Priority Research Program of Chinese Academy of Sciences,No.XDA20010203Second Tibetan Plateau Scientific Expedition and Research Program(STEP),No.2019QZKK1006。
文摘Investigating the spatio-temporal transmission features and process of novel coronavirus disease 2019(COVID-19)mitigation strategies are of great practical significance to understand the development of COVID-19 and establish international cooperation for prevention and control.In this paper,the cumulative number of confirmed cases,number of confirmed cases per day and cumulative number of deaths,were used to compare transmission paths,outbreaks timelines,and coping strategies of COVID-19 in China and the US.The results revealed that:first,the COVID-19 outbreaks in both China and the US exhibited a 6-week initiation stage.In China,the COVID-19 erupted in late January.It lasted only a short period of time and was almost completely contained within 6-8 weeks.But the COVID-19 erupted in early March in the US and was still in the peak or post-peak stage.Second,in China,the COVID-19 emerged in Wuhan and spread to other regions of Hubei Province and then nationwide,exhibiting a cross('+')-shaped of spread with Wuhan city as the center.Importantly,the COVID-19 in China had a large concentration and there were no national outbreaks.In contrast,the COVID-19 in the US first spread through New York and the western and eastern coasts but has since emerged throughout the entire country.Third,the lack of emergency response planning in both countries in the early stage(about 6-week)hampered COVID-19 prevention.However,actively high-pressure prevention and control measures were used to basically control COVID-19 in early March in China.And then China has gradually resumed business and production activities.Unfortunately,the US government missed the best opportunity to contain the epidemic.Faced with the choice between economic recovery and coronavirus containment,the US removed the quarantine and restriction measures too early.The COVID-19 is continuing to spread in the country and blossom everywhere,still showing no signs of receding.
基金The Strategic Priority Research Program of the Chinese Academy of Sciences,No.XDA20010203The Second Tibetan Plateau Scientific Expedition and Research Program,No.2019QZKK1006+1 种基金National Natural Science Foundation of China,No.42130508The Chinese Academy of Sciences,No.ZDRW-XH-2021-3。
文摘Recent years have witnessed rapid and widespread economic growth in regions involved in China’s Belt and Road Initiative(BRI),mainly due to the construction of six economic corridors.This paper aims to quantify the levels of six economic corridors according to the socioeconomic development levels in the BRI regions.Here,a gridded socioeconomic development index was first created,and a dividing line was drawn to reveal the distribution characteristics of socioeconomic development in the BRI regions.A classification method was then applied to identify local development levels.Finally,we created an economic corridor development index(ECDI)to evaluate the progress of six economic corridors.The results reveal spatial heterogeneity within the socioeconomic groups of BRI regions,which can be roughly divided into offshore(or Part A,50.54%)and inland(or Part B,49.46%)areas.Although both parts comprise roughly the same area,over 95%of the population is located in offshore regions.The China–Mongolia–Russia Economic Corridor has the highest development index due to a stable political environment and long-running cooperation.The China–Pakistan Economic Corridor suffers from the lowest ECDI but with strong development potential.Our methods can provide critical reference and practice for the future evaluation of the level of regional development.The results of this study can offer policymakers some insight into reducing socioeconomic inequality in the BRI regions.
