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IJSTR >> Volume 8 - Issue 8, August 2019 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Tree Regeneration Pattern And Size Class Distribution In Anthropogenically Disturbed Sub-Alpine Treeline Areas Of Indian Western Himalaya

[Full Text]



Nandan Singh, Ashish Tewari, Shruti Shah



Anthropogenic disturbance, Density, Diversity, Regeneration, Treeline



The position and structure of the treeline species vary from one site to another and in Himalayan region it depends on the snow line or snow cover. The transformation from seedling to adults is important and therefore the regeneration dynamics is a major thrust area of the study. The present study was conducted in the three anthropogenically disturbed treeline areas varying in altitude between 3145 and 3467 m asl in the sub-alpine region of western Indian Himalaya. The cattle pressure was estimated by using questionnaire and direct observation method. 3-5 herds of 800-1000 animals grazing in each studied site during snowless period. Across the treeline sites the total tree density varied between 590 and 760 ind. /ha and seedling density between 200 and 710 ind. /ha. The un-palatable R. arboreum and R. campanulatum showed the maximum seedling density (90-230 ind. /ha and 190-330 ind. /ha) whereas, remaining other species had poor regeneration. R. campanulatum seedling were present 6-20m outside from the actual position of krumholtz and showed an upward movement from actual treeline limit encroaching into alpine meadows.



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