Large Urban Regions of the world

This database provides construction of Large Urban Regions (LUR) in the world. A Large Urban Region (LUR) can be defined as an aggregation of continuous statistical units around a core that are economically dependent on this core and linked to it by economic and social strong interdependences. The main purpose of this delineation is to make cities comparable on the national and world scales and to make comparative social-economic urban studies. Aggregating different municipal districts around a core city, we construct a single large urban region, which allows to include all the area of economic influence of a core into one statistical unit (see Rozenblat, 2020 or Rogov & Rozenblat, 2020 for Russia). In doing so we use four principal urban concepts (Pumain et al., 1992): local administrative units (Municipality or localities: MUNI), morphological urban area (MUA), functional urban area (FUA) and conurbation that we call Large Urban Region (LUR). The LURs are the spatial extensions of influence of one or several FUAs or MUAs. MUAs and FUAs are defined by various national or international sources. We implemented LURs using criteria such as the population distribution among one or several MUAs or FUAs, road networks, access to an airport, distance from a core, presence of multinational firms. FUAs and MUAs perimeters, if they form a part of a LUR, belong to a unique LUR. In this database we provide the composition of the LURs in terms of local administrative units (MUNI), Morphological Urban Area (MUA), Functional Urban Area (FUA).本数据库面向全球构建大型都市区（Large Urban Region, LUR）。大型都市区（LUR）可定义为以核心区域为中心的连续统计单元集合，这些单元在经济上依附于该核心区域，并通过紧密的经济与社会依存关系与核心区域相连。本次划分的核心目标，是实现国家及全球尺度下城市的可比较性，支撑跨区域社会经济城市研究。通过将不同市辖区围绕核心城市聚合为单一大型都市区，可将核心城市的全部经济影响范围纳入单个统计单元（详见Rozenblat, 2020；或针对俄罗斯地区的Rogov & Rozenblat, 2020）。本次构建遵循四项核心城市研究范式（Pumain et al., 1992）：地方行政单元（Municipality或居民点：MUNI）、形态型都市区（Morphological Urban Area, MUA）、功能型都市区（Functional Urban Area, FUA）以及我们定义为大型都市区（LUR）的城市群。LUR是一个或多个FUA或MUA影响范围的空间延伸。MUA与FUA的界定依托各类国家或国际数据源。我们通过以下标准实现LUR的构建：单个或多个MUA或FUA的人口分布、道路网络布局、机场可达性、与核心区域的空间距离以及跨国企业入驻情况。若某FUA或MUA属于某LUR的组成部分，则其边界将纳入该唯一LUR的范围。本数据库提供了大型都市区的组成信息，涵盖地方行政单元（MUNI）、形态型都市区（MUA）与功能型都市区（FUA）三个维度。