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Urban shrinkage has gradually become an issue of world-concerning social matter. As urbanization progresses, some Chinese cities are experiencing population loss and economic decline. Our study attempts to correct and integrate DMSP/OLS and NPP/VIIRS data to complete the identification and measurement of shrinking cities in China's Yangtze River Economic Belt (YREB). We identified 36 shrinking cities and 644 shrinking counties on the municipal and county scales. Based on this approach, we established the average urban shrinkage intensity index and the urban shrinkage frequency index, attempting to find out the causes of shrinking cities for different shrinkage characteristics, city types and shrinkage frequencies. The results show that (1) the shrinking cities are mainly concentrated in the Yangtze River Delta city cluster, the midstream city cluster and the Chengdu–Chongqing economic circle. (2) Most shrinking cities have a moderate frequency of shrinking, dominated by low–low clusters. Resource-based, heavy industrial, small and medium-sized cities are more inclined to shrink. (3) The single economic structure, the difficulty of industrial transformation and the lack of linkage among county-level cities are possible reasons for the urban shrinkage in the YREB. Exploring the causes of urban shrinkage from a more micro perspective will be an inevitable task for sustainable development in YREB and even in China. [ABSTRACT FROM AUTHOR]

Empirical research on urban shrinkage is being conducted around the globe, since many countries are confronted with the phenomenon of shrinking cities. So far, the research on urban shrinkage has focused strongly on case studies, which is why we can benefit from a diverse and empirically rich knowledge base on the phenomenon and its regional manifestations. By bridging and comparing the European and Japanese academic discourse, we aim to identify the different recurring theories and key issues discussed under the umbrella term 'urban shrinkage' and strive to uncover blind spots of the debate. For this purpose, we conduct a qualitative meta-analysis of 100 empirical cases that are documented in the literature dealing with shrinking cities in the EU and Japan. This meta-analysis is based on comparative qualitative content analysis. It reveals a regionally differentiated pattern of various causes, effects and responses documented for shrinking cities in Western, Mediterranean and post-socialist EU countries and in Japan. Based on these findings, we offer an agenda for future research by suggesting an integrative perspective on the context-specific dynamics of urban shrinkage. We argue for an integrative understanding of shrinking cities in order to develop a valid knowledge base for evidence-based policy recommendations. [ABSTRACT FROM AUTHOR]

Valga is a small shrinking town in Estonia where the heritage conservation area acts as the business, administrative and cultural centre of the town. Compared to the overall socio-economic situation of the town, the heritage conservation area suffers due to substantially faster depopulation and higher vacancy rates. Revitalization of the urban centre is a key part of the small town's strategy. This paper addresses the question: In an area of urban shrinkage, what role does heritage protection play in revitalization of a town centre? Drawing on a qualitative case study of the Valga heritage conservation area, the findings show that the current heritage protection system does not support revitalization efforts. There is a need to develop a new set of heritage conservation rules for shrinking cities and to adapt the current heritage conservation system to urban shrinkage. The paper further proposes some possible aspects of such system adaptation. [ABSTRACT FROM AUTHOR]

In light of ongoing shrinkage processes affecting a number of cities and regions in Europe and around the world, the planning literature has suggested a need for new planning concepts and strategies, or even a new planning paradigm. This paper aims to contribute to the debate by investigating the adaptation of the process of urban regeneration to shrinkage. Urban regeneration is a common policy in cities facing population and economic decline. However, particularly for inner-city neighbourhoods, it has not been sufficiently documented how urban regeneration responds to challenges related to shrinkage. Looking first at the evolving national policy framework and then at two local case studies, this paper identifies conditions leading to the emergence of new practices of urban regeneration in inner-city neighbourhoods in Eastern Germany. These practices are characterized by the moderate usage of public subsidies combined with 'soft' measures like cooperation with individual property owners and potential investors as well as place marketing. [ABSTRACT FROM AUTHOR]