Asian Journal of Geographical Research

Climate variability has become a significant environmental challenge for forest ecosystems globally, particularly in the sensitive Himalayan region. Uttarakhand, with its extensive forest cover and rich biodiversity, is vulnerable to changes in temperature, precipitation, snowfall patterns and extreme weather events. This study examines the effects of climate variability on forest ecosystems in Uttarakhand and assesses its impacts on forest cover, biodiversity, vegetation patterns, forest fires and ecosystem services. The research is based on secondary data collected from the India State of Forest Reports (ISFR 2019 and ISFR 2023), India Meteorological Department (IMD) reports, Uttarakhand Forest Department publications, Ministry of Environment, Forest and Climate Change reports and peer-reviewed scientific literature. Descriptive and comparative analyses were used to examine climatic trends and their effects on forest ecosystem dynamics. Forest-cover statistics, biodiversity records and documented climate-related impacts were analysed to identify patterns of ecological change. The findings indicate that rising temperatures, decreasing snowfall, unpredictable rainfall patterns, longer dry spells and more frequent extreme weather events have affected the structure and functioning of forest ecosystems in Uttarakhand. A comparison of ISFR data indicates changes in forest and tree cover. Ecological evidence points to reduced regeneration of oak forests, the spread of chir pine to higher elevations, increased vulnerability to forest fires, habitat degradation and threats to wildlife and medicinal plant species. The study also highlights the adverse effects of climate variability on ecosystem services, including carbon storage, water regulation and support for forest-dependent livelihoods. The study concludes that climate variability poses a serious threat to the long-term sustainability of Uttarakhand’s forest ecosystems. Strengthening climate-resilient forest management, biodiversity conservation, afforestation programmes, community participation and scientific monitoring is essential for improving ecosystem resilience and ensuring sustainable environmental management in the Himalayan region.