Assessment of the effectiveness of green roofs in reducing urban heat island effects

Thesis Abstract

Abstract
Urbanization has led to the proliferation of urban heat islands (UHIs), characterized by elevated temperatures in urban areas compared to their surrounding rural areas. The negative impacts of UHIs on human health, energy consumption, and the environment have heightened the need for sustainable solutions to mitigate these effects. Green roofs have emerged as a promising strategy to reduce UHI effects by promoting evapotranspiration, providing insulation, and enhancing urban biodiversity. This thesis presents a comprehensive assessment of the effectiveness of green roofs in reducing UHI effects through a combination of literature review, field measurements, and data analysis. Chapter 1 provides an introduction to the study, outlining the background, problem statement, objectives, limitations, scope, significance, structure of the thesis, and definition of key terms. Chapter 2 presents a detailed literature review covering ten key aspects related to green roofs, UHIs, and their interactions. Chapter 3 describes the research methodology, including the research design, data collection methods, data analysis techniques, and quality assurance measures. In Chapter 4, the findings of the study are discussed in detail, focusing on the impact of green roofs on urban temperature reduction, energy savings, stormwater management, and biodiversity enhancement. The results reveal the significant potential of green roofs in mitigating UHI effects and promoting urban sustainability. Various factors influencing the effectiveness of green roofs, such as design, maintenance, and local climate conditions, are also investigated. Finally, Chapter 5 presents the conclusion and summary of the thesis, highlighting the key findings, implications for environmental management, and recommendations for future research. The study underscores the importance of green roofs as a sustainable solution for reducing UHI effects and enhancing urban resilience. Overall, this thesis contributes to the growing body of knowledge on green infrastructure and its role in addressing environmental challenges in urban areas. Keywords Urban heat island, Green roofs, Sustainable urban development, Evapotranspiration, Biodiversity, Environmental management.