Impact of blue-green spatial characteristics on urban thermal comfort

DOI

10.2991/978-94-6463-415-0_49How to use a DOI?

Keywords

Blue-green space; Cold island effect; Urban environment

Abstract

Currently, the process of urbanization is developing rapidly, but the neglect of urban environment and other factors has led to the emergence of some “urban diseases”, such as urban heat island effect. It refers to the phenomenon that the temperature in the central area of a city is higher than that in the surrounding suburbs or countryside. The characteristics of urban heat island effect mainly include increasing energy consumption, worsening air quality, increasing health risks, and damaging ecological balance. Effective response measures are therefore essential to mitigate this phenomenon and its effects. The blue-green space in the city can alleviate the heat island effect and reduce the temperature of the surrounding environment, which is the so-called “cold island effect”. Therefore, taking Hangzhou as an example, the study clarifies the pattern of urban blue-green space and then inversely calculates the pattern of cold island intensity in the study area. After clarifying the pattern of urban blue-green spaces, the study area is inverted to calculate the intensity pattern of cold islands, and indicators are screened to explore the influence factors of urban blue-green spaces on the intensity and spread of cold islands. The study shows that various blue-green spaces show an increasing trend of surface temperature as the distance from them increases, but then the changes will level off. And the diffusion range of cold island in 24 sampling points is between 100–1305.1 m, with an average of about 666.58 m. According to the classification of type and form, waters, green spaces and their combinations have different average diffusion ranges. In addition, these indicators are positively correlated, i.e., the higher the values of external watershed area and external impervious surface area, the higher the spreading range of cold islands. The study proposes targeted optimization strategies for urban blue-green spaces, which are of guidance and reference value for the construction and planning of urban blue-green spaces.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Zifei Xu
AU  - Meifang Hou
AU  - Yueshu Yu
PY  - 2024
DA  - 2024/05/14
TI  - Impact of blue-green spatial characteristics on urban thermal comfort
BT  - Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)
PB  - Atlantis Press
SP  - 466
EP  - 475
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-415-0_49
DO  - 10.2991/978-94-6463-415-0_49
ID  - Xu2024
ER  -