Since 2005, Outstanding Universal Value (OUV) is the standard by which United Nations Educational Scientific and Cultural Organization (UNESCO) evaluates world cultural heritage site suitability. The sites worthy of UNESCO preservation as well as the parameters used to demonstrate OUV are diverse. Our study focused on the uniquely distinguished rural landscape sites and the OUV parameter of integrity. Integrity however, is an elusive concept for which UNESCO provides no definitional protocol, and for which the scientific
Vertical Greenery Modular Systems (VGMS) are an increasingly widespread building envelope solution aimed at improving the aesthetical quality of both new and existing façades, contemporarily achieving high energy efficiency performance. Within a research project a new prototype of VGMS was developed, designed and tested. An experimental monitoring campaign was carried out on a test cell located in Turin (northern Italy), aimed at assessing both biometric parameters and energy related issues. Two different types of growing media and two plant species, Lonicera nitida L. and Bergenia cordifolia L., have been tested on a south facing lightweight wall. Results have been compared to the same wall without VGMS and plaster finished, in order to characterize the thermal insulation effectiveness in the winter period and the heat gain reduction in the summer period. Measured equivalent thermal transmittance values of the green modular system showed a 40% reduction, when compared to the plastered wall, thus noticeably impacting on the energy crossing the façade during the heating season. Benefits of the VGMS are measured also during the summer season, when the presence of vegetation lowers the outdoor surface temperatures up to 23°C compared to the plastered finishing, with a positive effect on outdoor comfort and urban heat island mitigation. Nevertheless not significant reduction was observed as far as the entering energies are concerned, since the green coverage acts as a thermal buffer and solar radiation is stored and released slowly if compared to the plastered wall.
The scientific community recognizes that urban green areas play an important role in supporting human wellbeing. Green spaces are used differently by citizens accordingly to their age, gender, education, or lifestyle. During the coronavirus disease (COVID-19) pandemic period in 2020, public green areas were closed due to the limitations imposed by social distancing in Italy and people were forced to stay at home. The aim of this research was to investigate the importance of public green areas in the life of the population in relation to the limits imposed during the first lockdown in Italy. A participatory approach was used, and an online questionnaire focused on people’s perceptions about the public attendance in green areas and their main uses pre-, during, and post-COVID-19 emergency period was administrated randomly to the adult population. The questions focused on the habit, frequency, and duration of park visits and about the individual perceptions and feelings about the green areas close (maximum 200 m distance) to their residences. A total of 3286 responses were obtained and analyzed at national and regional levels (Piemonte). In order to have a general national overview, a basic descriptive statistic was applied using all answers, elaborated in the form of percentages. At the regional level, questions were selected and compared to determine if answers were in related. Statistical analyses with chi-square tests and correspondence analyses were performed. The results indicated that the social distancing period for COVID-19 containment in Italy influenced perceptions about urban green areas. The importance of having outdoor green spaces was highlighted and an increase in interest about urban green areas was observed. Future planning strategies will have to consider the need of designing urban green areas for having more livable cities.
Abstract:In 2002, the United Nations Educational Scientific and Cultural Organization (UNESCO) established the importance of the sustainability and the need of management plans for the safeguard of cultural heritage. No models, rules or specific definitions have been provided for this purpose. By 2014, UNESCO had recognized 16 rural landscapes as cultural heritage sites. This paper aims to understand the management systems adopted by the rural World Heritage Sites over time in order to identify the best practices, strategies, actions and measures applied for the conservation of their universal value with a particular focus on sustainability. A comparative study, analyzing the management plans for these sites, was conducted. The drawing up of site management plans for such rural landscapes is a difficult process. In fact, private and public authorities and several stakeholders are involved, and all of them should participate actively in the decision making process. To ensure the sustainability of these sites, it is important to evaluate several parameters and to design an integrated plan. We focused on assessing and monitoring sustainability in rural World Heritage Sites, and our results could be useful for the implementation of existing plans and processes for drawing up management plans for future UNESCO cultural heritage.
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