Abstract: Plant phenology, the study of the timing of periodic biological events in plants, such as flowering and leafing, serves as a sensitive indicator of climate change. As global temperatures rise and weather patterns shift, phenological events are occurring earlier or becoming desynchronized, affecting ecosystems, agriculture, and biodiversity. This paper explores the mechanisms through which climate change influences phenology, the observable effects across various regions and plant species, and the implications for ecological relationships and human systems. It also examines current methods of phenological monitoring and potential adaptation strategies.

Keywords:Phenology, Climate Change, Plant Development, Ecological Impact, Seasonal Shifts.