Urban vegetation and heat-related mortality in Seoul, Korea.
Urban vegetation and heat-related mortality in Seoul, Korea.
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DOI：
10.1016/j.envres.2016.09.001
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发表时间：
2016-11
影响因子：
8.3
通讯作者：
Bell, Michelle L.
中科院分区：
文献类型：
--
作者：
Son, Ji-Young;Lane, Kevin J.;Lee, Jong-Tae;Bell, Michelle L.
城市地区特别容易受到与热有关的健康后果的影响。气候变化和城市化的同时趋势可能会增加与城市热有关的健康负担。我们调查了城市植被对热相关死亡率的影响，并评估了2000-2009年韩国首尔内不同水平的植被和个体特征是否会影响温度-死亡率关联。我们使用归一化植被指数（NDVI）来评估首尔的城市植被。我们应用了一个过分散的泊松广义线性模型与温度和指标的NDVI组（分为3个级别）之间的相互作用项，以评估城市植被的温度-死亡率关联的影响修改。我们进行了分层分析，以探讨协会是否受到性别和年龄的个人特征。总死亡率与温度高于第90百分位数（25.1°C）1°C（“热效应”）之间的相关性对于具有低NDVI的gus最高。热效应使低、中、高NDVI组的死亡风险分别增加4.1%（95%置信区间（CI）2.3，5.9%）、3.0%（95% CI 0.2，5.9%）和2.2%（95% CI-0.5，5.0%）。估计的风险在性别和年龄方面显示出类似的影响。我们的研究结果表明，在韩国首尔植被较低的地区，高温的死亡率较高。
Urban areas are particularly vulnerable to heat-related health outcomes. Simultaneous trends of climate change and urbanization may increase the urban heat-related health burden. We investigated the effects of urban vegetation on heat-related mortality, and evaluated whether different levels of vegetation and individuals' characteristics affect the temperature-mortality associations within Seoul, Korea 2000-2009. We used Normalized Difference Vegetation Index (NDVI) to assess the urban vegetation within Seoul. We applied an overdispersed Poisson generalized linear model with interaction term between temperature and indicator of NDVI group (categorized in 3 levels) to assess the effect modification of the temperature-mortality association by urban vegetation. We conducted stratified analysis to explore whether associations are affected by individual characteristics of sex and age. The association between total mortality and a 1°C increase in temperature above the 90th percentile (25.1°C) (the “heat effect”) was the highest for gus with low NDVI. The heat effect was a 4.1% (95% confidence interval (CI) 2.3, 5.9%), 3.0% (95% CI 0.2, 5.9%), and 2.2% (95% CI -0.5, 5.0%) increase in mortality risk for low, medium, and high NDVI group, respectively. Estimated risks showed similar effects by sex and age. Our findings suggest a higher mortality effect of high temperature in areas with lower vegetation in Seoul, Korea.
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