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城市热岛效应影响心血管疾病的时空机制

Spatio-Temporal Mechanism Underlying the Effect of Urban Heat Island on Cardiovascular Diseases.

作者信息

Huang Huanchun, Deng Xin, Yang Hailin, Zhou Xinhui, Jia Qi

机构信息

College of Landscape Architecture, Nanjing Forestry University, Nanjing, China.

College of Arts and Design, Zhengzhou University of Light Industry, Zhengzhou, China.

出版信息

Iran J Public Health. 2020 Aug;49(8):1455-1466. doi: 10.18502/ijph.v49i8.3889.

DOI:10.18502/ijph.v49i8.3889
PMID:33083322
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7554388/
Abstract

BACKGROUND

We explored the spatio-temporal characteristics of urban heat island (UHI) effect on cardiovascular diseases (CVDs).

METHODS

The land surface temperatures (LST) were retrieved from four Landsat remote-sensing images' data, the temperature data from 95 meteorological stations, and analysis data on CVDs mortality. Based on these data, landscape pattern indexes were used to analyze the pattern-process-function and the mechanism.

RESULTS

During 1984-2017, the effects of UHI on CVDs increased, thereby increased the mortality by 28.8%. The affected areas gradually expand from the central area of the city and undergo three evolution stages; the highly affected areas are mainly distributed in central and southern regions, and patches increase in number. The areas and ratio of high-level patches also show an upward tendency, increasing dominance in the overall landscape. Patches of the overall landscape become more complicated in shape, whereas those of high-level ones become less complicated. Concentration degree of the overall landscape decreases gradually with the types of landscapes patches increasing, reaching a rather even space distribution.

CONCLUSION

Increased temperatures exacerbated by UHI lead to increased CVD mortality. As cities expand, the effects of UHI on CVDs increase in terms of both intensity and areas, with the overall landscape in uneven distribution, high-level affected areas in point distribution, and low-level ones in large-area concentration.

摘要

背景

我们探讨了城市热岛（UHI）效应对心血管疾病（CVDs）的时空特征。

方法

从四幅陆地卫星遥感图像数据中获取地表温度（LST）、95个气象站的温度数据以及心血管疾病死亡率分析数据。基于这些数据，利用景观格局指数分析格局 - 过程 - 功能及机制。

结果

1984 - 2017年期间，城市热岛对心血管疾病的影响增加，从而使死亡率增加了28.8%。受影响区域从城市中心区域逐渐扩大，并经历三个演变阶段；高影响区域主要分布在中部和南部地区，斑块数量增加。高水平斑块的面积和比例也呈上升趋势，在整体景观中的主导地位增强。整体景观斑块形状变得更加复杂，而高水平斑块形状变得不那么复杂。随着景观斑块类型增加，整体景观的集聚度逐渐降低，达到较为均匀的空间分布。

结论

城市热岛加剧导致的气温升高致使心血管疾病死亡率上升。随着城市扩张，城市热岛对心血管疾病的影响在强度和面积方面均增加，整体景观分布不均，高影响区域呈点状分布，低影响区域大面积集中。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/026cad75ca4d/IJPH-49-1455-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/70c288b0d86d/IJPH-49-1455-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/99caa61d69d9/IJPH-49-1455-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/fafc54674820/IJPH-49-1455-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/dfe2a22965f0/IJPH-49-1455-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/e7d5060d3418/IJPH-49-1455-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/5a7cc54730db/IJPH-49-1455-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/026cad75ca4d/IJPH-49-1455-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/70c288b0d86d/IJPH-49-1455-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/99caa61d69d9/IJPH-49-1455-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/fafc54674820/IJPH-49-1455-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/dfe2a22965f0/IJPH-49-1455-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/e7d5060d3418/IJPH-49-1455-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/5a7cc54730db/IJPH-49-1455-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6cbc/7554388/026cad75ca4d/IJPH-49-1455-g007.jpg

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