Communicating Climate Mitigation and Adaptation Efforts in American Cities
Communicating Climate Mitigation and Adaptation Efforts in American Cities
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DOI：
10.3390/cli7030045
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发表时间：
2019-03-24
期刊：
影响因子：
3.7
通讯作者：
Holman, Mirya R.
中科院分区：
文献类型：
--
作者：
Boussalis, Constantine;Coan, Travis G.;Holman, Mirya R.
城市政府在气候变化缓解和适应政策方面可以发挥很大作用，因为城市地区温室气体(GHG)排放量高得不成比例，而且处于已观察和预期的气候变化影响的“第一线”。这项研究考察了美国市长如何在城市议程的背景下优先考虑气候政策。我们利用计算机辅助的内容分析，对美国82个主要城市2010-2016年期间与气候变化有关的2886多份市长新闻稿进行了分析，描述并解释了市政府在官方沟通中讨论缓解和适应政策的程度。具体地说，我们依靠半监督话题模型来衡量城市新闻稿中的关键气候政策主题，并使用多水平统计模型检查它们的相关性。我们的结果表明，虽然缓解政策倾向于主导城市气候政策的议程，但在过去几年里，关于适应努力的讨论急剧上升。此外，我们的统计分析表明，党派之争影响着城市对一系列气候政策领域的讨论--包括排放、土地利用政策和气候适应能力--而预测的气候风险脆弱性只影响对气候适应能力和适应努力的讨论。
City governments have a large role to play in climate change mitigation and adaptation policies, given that urban locales are responsible for disproportionately high levels of greenhouse gas (GHG) emissions and are on the "front lines" of observed and anticipated climate change impacts. This study examines how US mayors prioritize climate policies within the context of the city agenda. Employing a computer-assisted content analysis of over 2886 mayoral press releases related to climate change from 82 major American cities for the period 2010-2016, we describe and explain the extent to which city governments discuss mitigation and adaptation policies in official communications. Specifically, we rely on a semi-supervised topic model to measure key climate policy themes in city press releases and examine their correlates using a multilevel statistical model. Our results suggest that while mitigation policies tend to dominate the city agenda on climate policy, discussion of adaptation efforts has risen dramatically in the past few years. Further, our statistical analysis indicates that partisanship influences city discussion on a range of climate policy areas-including emissions, land use policy, and climate resiliency-while projected vulnerability to climatic risks only influences discussion of climate resiliency and adaptation efforts.