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Archive: Published Articles


Interdisciplinary International Science Journal

Volume 41 (2023)
Issue 4A
Page No. 2537



Rockfillinroy Kharmawlong, Keshav Kumar Upadhyay, 
Shri Kant Tripathi

Environment and Ecology 41 (4A) : 2537—2546, October—December 2023
Article DOI:
ISSN 0970-0420

Tree Ring Analysis of Mexican Weeping Pine 
(Pinus patula Schiede ex Schltdl. and
from Nagaland, Northeast India

Rockfillinroy Kharmawlong, Keshav Kumar Upadhyay, 
Shri Kant Tripathi

Received 11 August 2023, Accepted 12 October 2023, Published on 31 October 2023



In this study, tree ring analysis of Mexican weeping pine (P. patula) from Kohima Botanical Garden of Nagaland, Northeast India was carried out. Tree ring-width chronology for 39 years extending from 1983 to 2021 was developed. The developed chronology exhibited high potential of the species for dendroclimatological studies and to understand the tree growth patterns in relation to changing climate. The ring-width chronology indicated occurrence of common event years mostly related to the drought records in the region. Further, the resilience component analysis demonstrated low resistance of the species to extreme event years, particularly drought, as indicated by significant reduction in growth and recovery rate. In conclusion, the tree growth and development in the region were severely impacted by moisture deficit events, and therefore, future policy formulation needs to be developed considering water management plans for climate resilient forestry and agriculture in the region.

Keywords    Tree rings, event years, climate variability, resilience component analysis, forest management.

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