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Sustainability 2018, 10(3), 587; https://doi.org/10.3390/su10030587

Relationship between Park Composition, Vegetation Characteristics and Cool Island Effect

1
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
2
Zhou Youguang School of Languages and Cultures, Changzhou University, Changzhou 213022, China
*
Author to whom correspondence should be addressed.
Received: 22 January 2018 / Revised: 9 February 2018 / Accepted: 24 February 2018 / Published: 26 February 2018
(This article belongs to the Special Issue Urban Green Infrastructure and Climate Adaptation)
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Abstract

The Land Surface Temperature (LST) of a park is lower than the surrounding environment, and thus the parkland forms a Park Cool Island (PCI). However, more case studies are needed to reveal the relationship between park composition, vegetation characteristic and PCI development. The LST and Land Use/Land Cover (LULC) of 18 different sized parks in Changzhou, China were obtained from Landsat-8 and Mapworld Changzhou data. Then, a sample investigation method was used to calculate vegetation characteristics of these parks by an i-Tree Eco model. In order to reduce the impact from the external environment on PCI, the Temperature Drop Amplitude (TDA) and Temperature Drop Range (TR) inside the parks were analyzed by ArcGIS 9.3. Impact factors were tested by Pearson correlation analysis and curve fit to reveal the relationship between these factors and PCI formation. The result shows that a park area threshold of 1.34 to 17 hectares provides the best PCI effect, that park shape (perimeter/area), Leaf Area Index (LAI), density, tree cover, water cover, and impervious surface cover have significant correlation with PCI development, vegetation health and global climate change affect the PCI development. Advice is proposed to improve and maintain PCI effects. View Full-Text
Keywords: parks; cool island effect; Landsat-8; i-Tree Eco; urban heat island; land surface temperature parks; cool island effect; Landsat-8; i-Tree Eco; urban heat island; land surface temperature
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wang, X.; Cheng, H.; Xi, J.; Yang, G.; Zhao, Y. Relationship between Park Composition, Vegetation Characteristics and Cool Island Effect. Sustainability 2018, 10, 587.

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