Author/Authors :
HUANG, Huanchun College of Landscape Architecture - Nanjing Forestry University, Nanjing, China , DENG, Xin College of Landscape Architecture - Nanjing Forestry University, Nanjing, China , YANG, Hailin College of Landscape Architecture - Nanjing Forestry University, Nanjing, China , ZHOU, Xinhui College of Landscape Architecture - Nanjing Forestry University, Nanjing, China , JIA, Qi College of Arts and Design - Zhengzhou University of Light Industry, Zhengzhou, China
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.
Keywords :
Spatio-temporal characteristic , Landscape pattern , Cardiovascular disease , Urban heat island
