As an important part of health industry,wellness tourism plays an important role in health care,rehabilitation and convalescence.Based on the two databases of"Web of Science"and"China National Knowledge Infrastructure",this paper makes a comparative analysis of the domestic and foreign wellness tourism study from research field,research content and research methods.The research on wellness tourism in China started late,and the related research lags be-hind,meanwhile,there is a big gap with the booming practice of wellness tourism in China.Based on the related literature review at home and abroad,this paper puts forward the future re-search topics,mainly include construction of the theoretical system of Chinese wellness tourism,motivation differences and demand characteristics of wellness tourists,factors and product mod-els of wellness tourism development,evaluation of the effect of wellness tourism,as well as the mechanism of wellness tourism intervention in place and community development.
The Middle East is an important node area of"One Belt and One Road"initiative.A profound analysis of its complex geo-setting and driving mechanism is of great significance to safeguarding economic interests,improving"great power status"and international Influence of China.This study analyzed the spatio-temporal evolution of the geo-setting of the Middle East,and the mechanism of spatial disparity as well.The results show that:(1)Taking the"Arab Spring"in 2010 as the"turning point",the evolution of the geo-setting in the Middle East can be divided into two stages:a period of mild fluctuations(2000-2009)and a period of severe fluctua-tions(2010-2020).(2)From 2000 to 2020,the geopolitical structure of the Middle East has tran-sitioned from"one core"where Iraq is in an advantage position into"one core"dominated by Iran.The geo-setting has evolved from"higher in the west and lower in the east,higher in the center"to"higher in the east and lower in the west,higher in the north and lower in the south"spatial patterns,and the trend of"advancing east"is obvious.In 2020,high-value areas of geo-setting were distributed in northern and eastern countries such as Iran,Turkey,UAE,Saudi Ara-bia and Kuwait,while low-value areas of geo-setting were concentrated in southern and western countries such as Yemen,Syria,Iraq,Jordan and Lebanon.(3)The driving mechanism of geo-setting in the Middle East involves natural environmental,political and military relations and economic relations,economic structure,space structure,America and Russia's Game of Strategy and Interests in the Middle East.Among them,natural environmental acts as the supporting force;political and military relations,economic relations and economic structure act as the driv-ing forces;space structure acts as the friction force;American-Russian game acts as the motive force.Geo-setting evolution is the result of the combined action of internal and external factors.
Based on the input-output perspective,this paper constructs an input-output evalua-tion index system of technological innovation efficiency and integrates the super-efficient SBM model combined with Malmquist index,coefficient of variation and spatial Gini coefficient,Mo-ran index,fixed effect panel model and other analytical methods to deeply explore the spatial variation of technological innovation efficiency and the influencing factors of 41 prefecture-level and above cities in the Yangtze River Delta region from 2007-2017.The results show that ① the innovation efficiency of the Yangtze River Delta and the three provinces and one city show an overall trend of growth,and technological progress has a great role in promoting the improve-ment of urban innovation efficiency;② the degree of spatial differentiation of technological in-novation efficiency in the Yangtze River Delta region has weakened,the spatial differences be-tween different cities have gradually decreased,and technological innovation activities have tended to be balanced.However,the spatial auto-correlation is unstable,there are leaps in some areas,and there are positive or negative spatial spillover effects.③ The number of students per million higher education institutions,Internet usage,and total passenger transportation have sig-nificant positive effects on technological innovation efficiency,while the proportion of second-ary industry output to GDP has significant negative effects on technological innovation efficien-cy in the Yangtze River Delta.Through this study,the spatial distribution characteristics and in-fluencing factors of the technological innovation efficiency in the Yangtze River Delta region are explored,which provides a scientific basis for the construction of the Yangtze River Delta region-al science and technology innovation community.
Based on the trade data between China and other G20 countries from 2001 to 2019,this paper analyzed the evolution of bilateral trade pattern,analyzed the interdependence of bilat-eral trade by using trade intensity index and HM index,and analyzed the trade decoupling situa-tion between China and other G20 countries by using decoupling model and catch-up decoupling model.The results show that:(1)China and other G20 countries show asymmetric trade interde-pendence.China's trade intensity with other G20 countries is greater than that with China,while other G20 countries are more dependent on China's market;(2)The trade decoupling relationship between China and other G20 countries has changed from weak negative decoupling to expan-sionary negative decoupling.The trade sensitivity has decreased first and then increased.It has experienced four evolution stages:weak negative decoupling,expansionary negative decoupling,relative decoupling I and expansionary negative decoupling;(3)The United States and South Ko-rea have achieved absolute catch-up with Japan,and most countries have achieved relative catch-up with Japan and Saudi Arabia.China's economic and trade relations with other G20 countries tend to be negatively decoupled for a long time.The"relative decoupling"of China's economic and trade relations with other G20 countries exists objectively,but it will not be"fully decou-pled".China should deepen cooperation in low sensitivity areas with trade decoupled countries,tap the potential of cooperation with trade connected countries,and actively build a"decoupled discourse system"with"adjustment of interaction and dependence"as the core.
The phenomenon of urban growth and shrinkage coexist in China's rapid urbaniza-tion process,and urban shrinkage in the old industrial bases is a long-time disturbing problem.Based on the population and economic changes in cities of China's old industrial bases from 2009 to 2018,this paper analyzed the status and types of urban shrinkage and explored its influ-ence mechanism.Results show that:(1)In general,the type of urban shrinkage of the old indus-trial base cities are mainly economic shrinkage,the type of population-economic shrinkage comes second,and pure population shrinkage is relatively few.The economic shrinkage and pop-ulation-economic shrinkage cities mostly show the continuous spatial distribution,the population shrinkage type show the"dot"distribution features.(2)The shrinkage path goes as that econom-ic decline precedes population loss in most old industrial base cities,and in few old industrial base cities,population loss led to economic decline.The cities in line with the former transfor-mation path are mainly in central provinces and northeastern regions of China,while the cities in line with the latter transformation path are mainly in the northeast old industrial base.(3)The analysis of the influencing factors of old industrial base cities shows that birth rate,employment structure,industrial structure,opening-up policy,investment in science and technology affect the growth and shrinkage of urban population and economy in different directions and degrees.
