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Evaluating the Effectiveness of Tree...

Zhao, Qunshan.

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Evaluating the Effectiveness of Tree Locations and Arrangements for Improving Urban Thermal Environment.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Evaluating the Effectiveness of Tree Locations and Arrangements for Improving Urban Thermal Environment./
Author:	Zhao, Qunshan.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	120 p.
Notes:	Source: Dissertation Abstracts International, Volume: 79-04(E), Section: A.
Contained By:	Dissertation Abstracts International79-04A(E).
Subject:	Geography. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10623641
ISBN:	9780355395648

Evaluating the Effectiveness of Tree Locations and Arrangements for Improving Urban Thermal Environment.
Zhao, Qunshan.

Evaluating the Effectiveness of Tree Locations and Arrangements for Improving Urban Thermal Environment. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 120 p.

Source: Dissertation Abstracts International, Volume: 79-04(E), Section: A.

Thesis (Ph.D.)--Arizona State University, 2017.

Trees serve as a natural umbrella to mitigate insolation absorbed by features of the urban environment, especially building structures and pavements. For a desert community, trees are a particularly valuable asset because they contribute to energy conservation efforts, improve home values, allow for cost savings, and promote enhanced health and well-being. The main obstacle in creating a sustainable urban community in a desert city with trees is the scarceness and cost of irrigation water. Thus, strategically located and arranged desert trees with the fewest tree numbers possible potentially translate into significant energy, water and long-term cost savings as well as conservation, economic, and health benefits. The objective of this dissertation is to achieve this research goal with integrated methods from both theoretical and empirical perspectives.

ISBN: 9780355395648Subjects--Topical Terms:

524010
Geography.

Evaluating the Effectiveness of Tree Locations and Arrangements for Improving Urban Thermal Environment.
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245 1 0 $a Evaluating the Effectiveness of Tree Locations and Arrangements for Improving Urban Thermal Environment.
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300 $a 120 p.
500 $a Source: Dissertation Abstracts International, Volume: 79-04(E), Section: A.
500 $a Adviser: Elizabeth A. Wentz.
502 $a Thesis (Ph.D.)--Arizona State University, 2017.
520 $a Trees serve as a natural umbrella to mitigate insolation absorbed by features of the urban environment, especially building structures and pavements. For a desert community, trees are a particularly valuable asset because they contribute to energy conservation efforts, improve home values, allow for cost savings, and promote enhanced health and well-being. The main obstacle in creating a sustainable urban community in a desert city with trees is the scarceness and cost of irrigation water. Thus, strategically located and arranged desert trees with the fewest tree numbers possible potentially translate into significant energy, water and long-term cost savings as well as conservation, economic, and health benefits. The objective of this dissertation is to achieve this research goal with integrated methods from both theoretical and empirical perspectives.
520 $a This dissertation includes three main parts. The first part proposes a spatial optimization method to optimize the tree locations with the objective to maximize shade coverage on building facades and open structures and minimize shade coverage on building rooftops in a 3-dimensional environment. Second, an outdoor urban physical scale model with field measurement is presented to understand the cooling and locational benefits of tree shade. The third part implements a microclimate numerical simulation model to analyze how the specific tree locations and arrangements influence outdoor microclimates and improve human thermal comfort. These three parts of the dissertation attempt to fill the research gap of how to strategically locate trees at the building to neighborhood scale, and quantifying the impact of such arrangements.
520 $a Results highlight the significance of arranging residential shade trees across different geographical scales. In both the building and neighborhood scales, research results recommend that trees should be arranged in the central part of the building south front yard. More cooling benefits are provided to the building structures and outdoor microclimates with a cluster tree arrangement without canopy overlap; however, if residents are interested in creating a better outdoor thermal environment, open space between trees is needed to enhance the wind environment for better human thermal comfort. Considering the rapid urbanization process, limited water resources supply, and the severe heat stress in the urban areas, judicious design and planning of trees is of increasing importance for improving the life quality and sustaining the urban environment.
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