Understanding the Impact of Climate Change and Environments on Urban Forests: Insights from Morphological, Physiological, and Molecular Perspectives

As global climate patterns undergo unprecedented shifts, urban ecosystems, particularly urban forests, face increasing vulnerability, demanding a comprehensive exploration of their responses across various levels. This chapter synthesizes research findings on urban forests’ morphological, physiological, biochemical, and molecular adaptations to changing climatic and environmental conditions. Understanding plant responses to urban pollutants is vital for mitigating adverse effects and fostering sustainable urban ecosystems. Morphologically, urban trees exhibit altered growth patterns, canopy structures, and phenological shifts in response to temperature variations, altered precipitation regimes, and urban heat island effects. Physiologically, stress-induced responses such as transpiration rates, stomatal conductance, and photosynthetic efficiencies serve as crucial indicators of adaptive strategies urban trees employ to cope with environmental challenges. Biochemical studies highlight the role of secondary metabolites, antioxidants, and stress-responsive proteins in mitigating the adverse effects of climate change. Advances in molecular biology techniques unravel intricate mechanisms of molecular pathways, including gene expression, epigenetic modifications, and signal transduction, elucidating underlying adaptive responses in urban forest species. This chapter underscores the urgency of comprehending the multifaceted impacts of climate change and urbanization on urban forests, emphasizing the need for informed conservation and management strategies.