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Characterizing landscape patterns in urban-rural interfaces
Journal of Urban Management Pub Date : 2021-03-03 , DOI: 10.1016/j.jum.2021.01.001
Paola Ortiz-Báez , Pablo Cabrera-Barona , Jan Bogaert

Due to new urbanization patterns, where cities’ edges are becoming increasingly difficult to delimit, a better understanding of urban-rural gradients has become a key issue for urban planning. These interstitial territories are characterized for being highly heterogeneous, with hybrid and complex dynamics and -due to their landscape ambiguity and rapid transformation-frequently lack of clear regulations. Through calculation and analysis of landscape metrics in high resolution satellite images, this study proposes a novel and accurate method to identify urbanization patterns. It was applied to the urban-rural gradient of the Metropolitan District of Quito (MDQ), an Andean city. After analyzing five land use/land covers in six transects, results suggest that the MDQ presents patterns of urban diffusion and coalescence. The diffusion starts at the urban core and expand to rural parishes where some emerging traditional settlements merge, constituting a complex pattern of urbanization. Also, significant levels of fragmentation were identified for the vegetation cover in periurban areas, threatening the territory environmental sustainability. Finally, a multivariate cluster analysis was developed, evidencing five main tendencies of urbanization patterns. This knowledge can be particularly useful for urban planning in terms of reducing randomness in urban development processes. This paper proposes and tests an analytical approach which could be applied to other Latin-American cities, where urban expansion patterns remain unknown.



中文翻译:

表征城乡交界处的景观格局

由于新的城市化模式,越来越难以界定城市的边缘,因此更好地理解城乡梯度已成为城市规划的关键问题。这些间质区域的特征是高度异质性,具有混合和复杂的动态,并且-由于其景观含糊和快速转换-经常缺乏明确的规定。通过计算和分析高分辨率卫星图像中的景观指标,本研究提出了一种新颖,准确的方法来识别城市化模式。它已应用于安第斯城市基多(MDQ)大都市区的城乡梯度。在分析了六个样点的五个土地利用/土地覆盖之后,结果表明MDQ呈现了城市扩散和融合的模式。扩散始于城市核心,并扩展到农村教区,一些新兴的传统住区融合在一起,构成了复杂的城市化模式。此外,在郊区地区的植被被发现存在严重的碎片化,威胁到该地区的环境可持续性。最后,进行了多元聚类分析,证明了城市化模式的五种主要趋势。就减少城市发展过程中的随机性而言,这种知识对于城市规划特别有用。本文提出并测试了一种分析方法,该方法可适用于其他拉丁美洲城市城市扩展模式仍然未知的城市。此外,在郊区地区的植被被发现存在严重的碎片化,威胁到该地区的环境可持续性。最后,进行了多元聚类分析,证明了城市化模式的五种主要趋势。就减少城市发展过程中的随机性而言,这种知识对于城市规划特别有用。本文提出并测试了一种分析方法,该方法可适用于其他拉丁美洲城市城市扩展模式仍然未知的城市。此外,在郊区地区的植被被发现存在严重的碎片化,威胁到该地区的环境可持续性。最后,进行了多元聚类分析,证明了城市化模式的五种主要趋势。就减少城市发展过程中的随机性而言,这种知识对于城市规划特别有用。本文提出并测试了一种分析方法,该方法可适用于其他拉丁美洲城市(城市扩展模式仍然未知)的城市。就减少城市发展过程中的随机性而言,这种知识对于城市规划特别有用。本文提出并测试了一种分析方法,该方法可适用于其他拉丁美洲城市城市扩展模式仍然未知的城市。就减少城市发展过程中的随机性而言,这种知识对于城市规划特别有用。本文提出并测试了一种分析方法,该方法可适用于其他拉丁美洲城市城市扩展模式仍然未知的城市。

更新日期:2021-03-29
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