The Green Area Ratio: an urban site sustainability metric

2011 ◽  
Vol 54 (7) ◽  
pp. 937-958 ◽  
Author(s):  
Melissa Keeley
Keyword(s):  
Area Ratio ◽  
Urban Site ◽  
Green Area

scholarly journals Spatiotemporal Changes in the Built Environment Characteristics and Urban Heat Island Effect in a Medium-Sized City, Chiayi City, Taiwan

2020 ◽  
Vol 12 (1) ◽  
pp. 365 ◽  
Author(s):  
Jou-Man Huang ◽  
Heui-Yung Chang ◽  
Yu-Su Wang
Keyword(s):  
Population Density ◽  
Built Environment ◽  
Urban Heat Island ◽  
Air Temperature ◽  
Area Ratio ◽  
Heat Island ◽  
Downtown Area ◽  
Green Area ◽  
Spatiotemporal Changes ◽  
Urban Heat

This study took Chiayi City—a tropical, medium-sized city—as an example to investigate the urban heat island (UHI) effect using mobile transects and built environment characteristics in 2018. The findings were compared to those from a study in 1999 to explore the spatiotemporal changes in the built environment characteristics and UHI phenomenon. The result for the UHI intensity (UHII) during the day was approximately 4.1 °C and at midnight was approximately 2.5 °C. Compared with the survey in 1999, the UHII during the day increased by approximately 1.3 °C, and the UHII at midnight decreased by approximately 1.2 °C. The trend of the spatial distribution of the increasing artificial area ratio (AAR) proved the importance of urban land use expansion on UHI. The results of the air temperature survey were incorporated with the nesting space in GIS to explore the role of built environment characteristics in UHI effects. The higher the population density (PD) and artificial area ratio (AAR) were, the closer the proximity was to the downtown area. The green area ratio (GAR) was less than 0.2 in the downtown area and increased closer to the rural areas. The built environment factors were analyzed in detail and correlated with the UHI effect. The air temperature in the daytime increased with the population density (PD) and artificial area ratio (AAR), but decreased with the green area ratio (GAR) (r = ±0.3–0.4). The result showed good agreement with previous studies.

scholarly journals The Effects of Fine Dust on Children's Health: The Moderating Effects of Poverty and Green Area Ratio

2020 ◽  
Vol 20 (1) ◽  
pp. 163-171
Author(s):  
Si Ah Kim ◽  
Ji Hye Park ◽  
Da Young Han ◽  
Ick-Joong Chung
Keyword(s):  
Mental Health ◽  
Negative Impact ◽  
Area Ratio ◽  
Substantial Influence ◽  
Fine Dust ◽  
Moderating Effects ◽  
Physical And Mental Health ◽  
Surrounding Environment ◽  
Green Area ◽  
The Relationship

We live under substantial influence of our surrounding environment, and children are more vulnerable to climate hazards such as fine dust (PM10). However, there is a dearth of research confirming the multifaceted effects of fine dust on children's physical and mental health. This study clarifies the relationship between PM10 and children’s health, examining the moderating effects of poverty and green area ratio. The results were as follows. First, fine dust (PM10) has a negative impact on the physical and mental health of children. Second, the effect of PM10 on children’s mental health is moderated by the green area ratio of the children’s residences. Based on the results of this study, a disaster welfare policy is proposed to protect climate change-vulnerable populations from fine dust.

Analysis of Green Area Ratio by Industrial Complex Type to Minimize DEFORESTATION

J-Institute ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 20-31
Author(s):  
Changjun Kim ◽  
Hyangju Lee ◽  
Wonhyeon Lim
Keyword(s):  
Area Ratio ◽  
Industrial Complex ◽  
Complex Type ◽  
Green Area

Performance Evaluation of Divided Intake Ducts: Effect of Area Ratio and Inlet Reynolds Number

2003 ◽  
Vol 30 (5) ◽  
pp. 525-541 ◽  
Author(s):  
Sanjeev Bharani ◽  
S.N. Singh ◽  
V. Seshadri ◽  
R. Chandramouli
Keyword(s):  
Reynolds Number ◽  
Performance Evaluation ◽  
Area Ratio
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