摘要：许多因素可以促进可持续运输,例如绿色/更绿色的运输方式、空间设计和运输基础设施之间的连接、土地利用或城市形态、旅行行为等。在该问题的第一篇论文中,Chen和Felkner ( 2020 )对可持续交通与城市形态之间的关系进行了广泛的评述,指出许多研究者只讨论了可持续交通与城市形态各要素之间的关系,而没有考虑城市形态各要素之间的相互关系,如人口密度、城乡范围内的集中程度、土地利用结构等。为了填补这一空白,作者以美国佛罗里达州为例,对可持续交通指标和城市形态要素进行了稳健回归。他们发现,城市形态要素之间的互动效应表现为"从负到正"的协同作用,这意味着城市形态要素对可持续交通结果的某些预期效应取决于其他城市形态要素的水平。虽然论文未能讨论所有要素之间的相互作用效应,但论证是合理的,分析是可以接受的,论文提出了一个需要更广泛关注的研究问题。
Abstract: Many factors can contribute to sustainable transport, for instance green/greener transport modes, spatial design and connectivity among transport infrastructure, land use or urban form, travel behaviour, etc. In the first paper of this issue, Chen and Felkner (2020) conduct an extensive review on the relationship between sustainable transport and urban form, and point out that many researchers have only discussed relationships between sustainable transport with individual elements of urban forms, without considering the interrelationships among the elements of urban forms such as population density, concentration within the urban-rural context, and land use mix. To fill this gap, the authors perform robust regressions on sustainable transport indicators and urban form elements using the case of the U.S. State of Florida. They found that the interaction effects among urban form elements show in a “threshold, negative-to-positive” synergy, which implies that certain expected effects from urban form elements on sustainable transport outcomes are conditional depending on levels of other urban form elements. Although the paper was not able to discuss interaction effects among all the elements, the argument is justified, the analysis is acceptable and the paper raised a research question that needs wider attention.
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