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首页> 外文期刊>Sustainability >A Multi-Level and Multi-Dimensional Measuring on Urban Sprawl: A Case Study in Wuhan Metropolitan Area, Central China
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A Multi-Level and Multi-Dimensional Measuring on Urban Sprawl: A Case Study in Wuhan Metropolitan Area, Central China

机译：城市扩张的多层次，多维度测度-以中部武汉都市圈为例

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摘要

Chinese cities are experiencing rapid urban expansion and being transformed into more dispersed urban form which necessitate the quantification of fine-scale intra-urban characteristics for sustainable urban development. We propose an integrated multi-level and multi-dimensional method to characterize urban sprawl and apply it to Wuhan, a typical metropolitan area in central China from 1996 to 2006. The specifications of levels are parcel at micro-level, district at meso-level and metropolitan area at macro-level. The measurements are implemented in seven dimensions: composition, configuration, gradient, density, proximity, accessibility and dynamics. Metrics are assigned to each dimension and innovative metrics such as derived contagion index, distance-based correlation coefficient and weighted centroid migration are defined to quantify the sprawling process. This bottom-up approach is capable of exploring spatio-temporal variation of urban growth at finer scales, capturing the multi-dimensional features of urban sprawl and providing policy implications for authorities at different levels. The results reveal that industrial sites and built-up land for special use are the most scattered and randomly distributed land use types, parcels and districts at the urban fringe present higher fragmentation than those in the urban core areas and urban expansion is largely enforced by assigning development zones.
机译：中国城市正在经历快速的城市扩张，并正在转变为更加分散的城市形式，这需要量化精细的城市内部特征才能实现可持续的城市发展。我们提出了一种综合的多层次和多维方法来表征城市蔓延，并将其应用于1996年至2006年中国中部典型的大都市武汉。层次的规格为微观层次的地块，中观层次的地块和大都市区。这些测量以七个维度实现：组成，配置，梯度，密度，接近度，可访问性和动态性。将指标分配给每个维度，并定义创新指标（例如，得出的传染指数，基于距离的相关系数和加权质心迁移）来量化蔓延过程。这种自下而上的方法能够以较小的规模探索城市增长的时空变化，捕捉城市扩张的多维特征，并为各级政府提供政策含义。结果表明，工业用地和专用土地是最分散和随机分布的土地利用类型，城市边缘的地块和区域的碎片化程度高于城市核心地区，而城市扩展主要通过分配来实现开发区。

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