Trees impacted by the forces of natural processes such as flash floods, snow avalanches, landslides, rockfalls or earthquakes, record these events and exhibit growth disturbances in their growth-ring series. As a consequence, these disturbances provide an excellent signal for the spatio-temporal reconstruction of past natural hazard activity and a means to date and document past disasters.

Original Source

An attempt has been made here to study the climatic influence on variation of tree-ring width (radial growth) of Blue Pine (Pinus wallichiana A.B. Jackson) growing in five different sites in and around Ziro Valley, Arunachal Pradesh, Northeast Himalaya. The site chronologies have been evaluated to assess inter-site differences through several statistical analyses, viz.