Climate change has a significant impact on forests and people dependent on them. High mountains around the globe are some of the most vulnerable systems and of great concern for conservation. The Himalayan mountains are experiencing a higher warming than average global warming, which can significantly impact their biodiversity, vegetation distribution and ecosystem structure. The plants growing in the Himalaya will have to adapt accordingly to survive the changing climate. Variations in climate impact tree growth and significantly influence cambial phenology and wood formation. There is a need to precisely document cambial phenology and wood formation in Himalayan trees to better understand climate-growth relationships and their response to future climate change. In this thesis, the dynamics of cambial phenology along an altitudinal range of the west Himalayan fir, Abies pindrow, was studied. Various stages of cambial phenology, duration and rate of wood formation were assessed from anatomical observations of xylem during the growing season from samples taken from three sites at various altitudes (2392-2965 m a.s.l.) over two years. In the 2nd part, climate-growth relationship along the altitudinal gradient using tree rings was investigated between monthly climate and radial tree growth from 1901-2016. The relationship was also studied using seasonal climate data. The temporal stability of this relationship was also studied to understand the impact of recent climate warming on climate-growth relationship. Finally, site chronologies from climatically sensitive trees were built and their response to regional climate was used for reconstruction purposes. The lower altitudinal site trees showed a good response to early growing season precipitation which was used to reconstruct the spring precipitation of Srinagar for last 200 years. Furthermore, growth responses to daily climate data was used to reconstruct the regional climate at a more finer scale. These findings give new insights into the dynamics of cambial phenology and climate-growth relationships and help in better understanding of potential impacts of climate change on tree growth and forest productivity in Himalayan forests.