Changing urban forms and carbon dioxide emissions in China: A case study of 30 provincial capital cities
Changing urban forms and carbon dioxide emissions in China: A case study of 30 provincial capital cities
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中国城市形态变化与二氧化碳排放：以30个省会城市为例
DOI：
10.1016/j.apenergy.2015.08.095
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发表时间：
2015-11-15
期刊：
影响因子：
11.2
通讯作者：
Li, Guangdong
中科院分区：
文献类型：
--
作者：
Fang, Chuanglin;Wang, Shaojian;Li, Guangdong
科学家们越来越认识到城市形态在协调城市可持续发展和减少二氧化碳排放方面的潜在作用。然而，尽管在气候变化科学中对城市形态的兴趣越来越大，但对城市形态对CO2排放的影响却很少进行定量估计。本研究的目的是利用中国30个省会城市1990 - 2010年的面板数据，量化这种关系。为了实现这一目标，我们首先选择了一系列的城市形态指标，我们量化的空间度量遥感数据。然后，我们使用IPCC指南推荐的统一标准方法估算了CO2排放水平，并随后进行了面板数据分析。研究结果表明，城市地区的增长与二氧化碳排放水平之间存在正相关关系。此外，人们还发现，“城市连续性”的增加导致二氧化碳排放量的减少，相反，“城市形状复杂性”的增加对二氧化碳排放量产生了积极的影响。本研究的结果表明，使中国现有城市更加紧凑的措施实际上可能有助于减少二氧化碳排放量，就像城市形式的日益分散或不规则性增加可能导致二氧化碳排放量增加一样。如果真的想实现有意义的二氧化碳减排，决策者和规划者在中国发展低碳城市时应该考虑城市形态。(C)2015爱思唯尔有限公司版权所有。
Urban form is increasingly being recognised by scientists for the potential role it might play in the coordination of sustainable urban development and the reduction of CO2 emissions. However, despite increasing interest in the morphology of cities in climate change science, few quantitative estimates have been made of the effects of urban form on CO2 emissions. The goal of this study is to quantify this relation, using panel data for China's 30 provincial capital cities from 1990 to 2010. In order to meet this aim, we first selected a series of urban form indicators, which we quantified by applying spatial metrics to remotely sensed data. We then estimated CO2 emission levels using a unified standard method recommended by the IPCC Guidelines, and subsequently performed a panel data analysis. The results of the study demonstrated a positive correlation between the growth of urban areas and CO2 emission levels. Further, it was also found that increased "urban continuity" led to reductions in CO2 emissions and that, conversely, increased "urban shape complexity" exerted a positive influence in relation to CO2 emissions. The findings of this study indicate that measures to make existing cities in China more compact may in fact help to reduce levels of CO2 emissions, just as increasing fragmentation or increased irregularity with respect to urban form may contribute to increased CO2 emissions. If serious about achieving meaningful reductions in CO2 emissions, decision makers and planners should take urban form into consideration when developing low-carbon cities in China. (C) 2015 Elsevier Ltd. All rights reserved.