Sustainable regeneration strategies for the historical city centers of Iran using SWOT and QSPM models

PurposeThe main objectives of the current study are to assess the existing situation of historical city centers in Iran and to offer prioritized appropriate regeneration strategies for their sustainable development.Design/methodology/approachThe study is based on a questionnaire-based survey in four historical city centers of Iran: Kashan, Naeen, Ardakan and Yazd. The required data have been collected using multiple tools including questionnaires and interviews with local residents and officials in the aforementioned case studies. Using the strengths, weaknesses, opportunities and threats (SWOT) technique, a set of appropriate strategies for the sustainable regeneration of these valuable fabrics has been proposed and the best of them have been prioritized employing quantitative strategic planning matrix (QSPM) matrix.FindingsThe results show that the current situation in all the case studies is not in line with sustainability and cultural heritage protection. Their multiple problems are mostly associated with their weaknesses, whilst their strengths, including a considerable potential as a tourism attraction, are scarcely exploited. The experts and residents surveyed for this research have provided basic information to establish the conservative strategies that should take priority when preparing the urban regeneration process of these areas.Originality/valueSince most of the adopted regeneration strategies in Iran are not supported by empirical studies, the current study largely fulfills this shortcoming by setting up a proper diagnosis of historical city centers in Iran and proposes the most appropriate regeneration strategies based on the findings.

Making Rural Micro-Regeneration Strategies Based on Resident Perceptions and Preferences for Traditional Village Conservation and Development: The Case of Huangshan Village, China

Micro-regeneration is a gradual renewal strategy that uses small-scale interventions to improve the quality of the living environment and local community, as well as spur industrial development. It is the small-scale interventions that have continued to make micro-regeneration a viable economic rural renewal approach for traditional village conservation and development. As such, in this work we explore potential micro-regeneration strategies and promotions based on assessments of public perception and preferences in an “unlisted” traditional village in China (i.e., an area with limited investment for conservation compared to “listed”, renowned traditional villages). We aim to identify the most perceptible modes of village transformation and industrial development for rural micro-regeneration strategies in the Huangshan traditional village of China. We also tested how the social character of respondents significantly affected their preferences in this regard. The public participatory mapping results illustrated a spatially clustered pattern made up of small spaces and individual buildings demanding micro-regeneration interventions. The survey based on 150 residents living around these sites disclosed that a unified repair approach subsidized by government and traffic condition improvements are the most recognized modes of village transformation, and the tourism is the most perceived and preferred method for industrial development. Significant differences between public perceptions and preferences of both village transformation and industrial development were identified corresponding to gender and income demographics, while village transformation perceptions change is dependent on age. Therefore, our study demonstrates evidence-based recommendations for active and effective rural micro-regeneration practices.

Fire characteristics and environmental conditions shape plant communities via regeneration strategy

© 2020 The Authors. Ecography published by John Wiley & Sons Ltd on behalf of Nordic Society Oikos Climate change is altering disturbance regimes outside historical norms, which can impact biodiversity by selecting for plants with particular traits. The relative impact of disturbance characteristics on plant traits and community structure may be mediated by environmental gradients. We aimed to understand how wildfire impacted understory plant communities and plant regeneration strategies along gradients of environmental conditions and wildfire characteristics in boreal forests. We established 207 plots (60 m2) in recently burned stands and 133 plots in mature stands with no recent fire history in comparable gradients of stand type, site moisture (drainage) and soil organic layer (SOL) depth in two ecozones in Canada's Northwest Territories. At each plot, we recorded all vascular plant taxa in the understory and measured the regeneration strategy (seeder, resprouter, survivor) in burned plots, along with seedbed conditions (mineral soil and bryophyte cover). Dispersal, longevity and growth form traits were determined for each taxon. Fire characteristics measured included proportion of pre-fire SOL combusted (fire severity), date of burn (fire seasonality) and pre-fire stand age (time following fire). Results showed understory community composition was altered by fire. However, burned and mature stands had similar plant communities in wet sites with deep SOL. In the burned plots, regeneration strategies were determined by fire severity, drainage and pre- and post-fire SOL depth. Resprouters were more common in wet sites with deeper SOL and lower fire severity, while seeders were associated with drier sites with thinner SOL and greater fire severity. This led to drier burned stands being compositionally different from their mature counterparts and seedbed conditions were important. Our study highlights the importance of environment–wildfire interactions in shaping plant regeneration strategies and patterns of understory plant community structure across landscapes, and the overriding importance of SOL depth and site drainage in mediating fire severity, plant regeneration and community structure.