Climate and its variability have been and continues to be the principal source of exceptional fluctuations which wreaked havoc on forests. In Chamba, up to an elevation of 1,800 m chir pine (Pinus roxburghii Sargent) is the main naturally occurring coniferous tree in forests. Plantations of Chir pine are also being raised on degraded slopes for increasing forest cover and also meeting the increasing timber demands. Owing to considerable geological instability, the whole of the region is very fragile and susceptible to erosion. The exceptionally high rainfall coupled with heavy snow fall further aggravates the problem.