Assessment of Heavy Metal Contamination in Urban Soils and Its Impact on Plant Growth

Thesis Abstract

Abstract
Heavy metal contamination in urban soils is a growing concern due to its potential negative impact on plant growth and human health. This thesis aims to assess the extent of heavy metal contamination in urban soils and its effects on plant growth. The study investigates the presence of heavy metals such as lead, cadmium, and mercury in urban soil samples collected from different locations within the city. Various plant species are grown in these contaminated soils to evaluate their growth and physiological responses. Chapter One provides an introduction to the research topic, highlighting the background of the study, the problem statement, objectives, limitations, scope, significance, structure of the thesis, and definitions of key terms. Chapter Two presents a comprehensive literature review on heavy metal contamination in urban soils, plant responses to heavy metal stress, and remediation strategies. Chapter Three details the research methodology, including the sampling and analysis of soil samples for heavy metal content, plant growth experiments, physiological measurements, and data analysis techniques. The chapter also outlines the experimental design and procedures followed in the study. In Chapter Four, the findings of the study are discussed in detail. The results reveal varying levels of heavy metal contamination in urban soils across different sampling sites. Plant growth experiments show that certain plant species exhibit reduced growth and chlorophyll content in response to heavy metal stress. Physiological parameters such as antioxidant enzyme activity and metal uptake by plants are also analyzed. Finally, Chapter Five presents the conclusions drawn from the study and provides a summary of the key findings. The research emphasizes the importance of monitoring and managing heavy metal contamination in urban soils to safeguard plant growth and environmental health. Recommendations for future research and practical implications of the study are also discussed. In conclusion, this thesis contributes to the understanding of heavy metal contamination in urban soils and its impact on plant growth. The findings highlight the need for sustainable soil management practices to mitigate the adverse effects of heavy metal pollution on plant ecosystems in urban areas. Further research in this field is essential to develop effective strategies for soil remediation and environmental protection.