Modelling residential land values using geographic and geometric accessibility in Guatemala City
Modelling residential land values using geographic and geometric accessibility in Guatemala City
复制标题
利用危地马拉城的地理和几何可达性对住宅土地价值进行建模
DOI：
10.1177/2399808317726332
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
J. Zevenbergen
中科院分区：
文献类型：
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作者：
J. Morales;J. Flacke;J. Zevenbergen
区位和可达性是土地价值研究的核心概念。然而，这一视角在概念和方法上对全球南方城市的应用仍然有限。这项研究的目的是连接概念和定义，以全面实施无障碍指标，并揭示其与危地马拉城住宅土地价值的关系。我们使用以下访问指标开发了一个多元回归模型：（1）使用基于时间的分析计算每个传输模式的地理访问指数;（2）在各种空间尺度上通过空间映射估计的几何访问指标;（3）计算为潜在访问网络中心的拟议几何通过地理访问指标。变量选择过程允许评估每个变量在构建简约模型中的信息贡献。我们评估了模型的背景下，模型的变化，代表现有文献中使用的常见方法。核心商业区的地理可达性对土地价值的影响最大，其次是接近具有高几何可达性的城市地区，通过地理可达性进行几何测量。邻里和城市范围内的几何可达性增加了空间化信息，有助于建立一个简约的模型，减少空间依赖。该模型产生了最高的拟合优度和预测精度相比，模型的变化。我们的结论是，危地马拉城的土地价值遵循一个占主导地位的单中心结构。此外，通过Space Access确定的重要城市地区的潜在访问表明存在经济活动或潜在经济活动，这些活动没有通过地理访问指标明确解决。结果有局限性，但提出了方法的可能性，在类似的拉丁美洲城市的研究和实践。
Location and accessibility are core concepts for land-value research. However, the perspective is still limited in their conceptual and methodological application to cities from the Global South. The objective of this research is to bridge concepts and definitions to comprehensively operationalize accessibility indicators and uncover its relation with residential land-values in Guatemala City. We developed a multivariate regression model using the following access metrics: (1) geographic-access indices that were computed using time-based analyses per transport mode; (2) geometric-access metrics estimated via Space Syntax at various spatial scales; (3) a proposed geometric via geographic-access metric computed as potential access to network centrality. A variable selection process allowed to assess the information contribution of each variable in building a parsimonious model. We assessed the model in the context of model variations that represent common approaches used in existing literature. Geographic access to the core business district has the highest impact on the land-values, followed by proximity to urban areas with high geometric-access, measured as geometric via geographic access. Geometric accessibility at neighbourhood and city-wide scales add spatialized information that contributes to a parsimonious model and reduces spatial dependence. The model yielded the highest goodness of fit and prediction accuracy compared with the model variations. We concluded that Guatemala City land-values follow a predominant monocentric structure. Additionally, potential access to vital urban areas as identified via Space Syntax denotes the presence of economic activities, or potential for such, which were not explicitly addressed through the geographic-access metrics. The results have limitations but pose methodological possibilities relevant for research and practice in similar Latin American cities.