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Leaf litter decomposition of dominant tree species of Namdapha National Park, Arunachal Pradesh, northeast India

Content Provider	Springer Nature Link
Author	Barbhuiya, Atiqur Rahman Arunachalam, Ayyanadar Chandra Nath, Prabhat Latif Khan, Mohammed Arunachalam, Kusum
Copyright Year	2007
Abstract	Rates of weight loss and nutrient (N and P) release patterns were studied in the leaf litter of the dominant tree species (Ailanthus grandis, Altingia excelsa, Castanopsis indica, Duabanga sonneriatioides, Dysoxylum binectariferum, Mesua ferrea, Shorea assamica, Taluma hodgsonii, Terminalia myriocarpa and Vatica lancefolia) of a tropical wet evergreen forest of northeast India. Nitrogen and phosphorus mineralization rate and decay pattern varied significantly from species to species. In general, the decay pattern, characterized by using a composite polynomial regression equation, exhibited three distinct phases of decay during litter decomposition—an initial slow decay phase (0.063% weight loss day−1), followed by a rapid decay phase (0.494% weight loss day−1) and a final slow decay phase (0.136% weight loss day−1). The initial chemical composition of the litter affected decomposition rates and patterns. Species like D. sonneriatoides, D. binectariferum, and T. hodgsonii with higher N and P content, lower carbon and lignin content, and lower C:N ratio and lignin:N ratio exhibited relatively faster decomposition rates than the other species, for example M. ferrea, C. indica and A. grandis. A slow decay rate was recorded for species such as M. ferrea, C. indica, and A. grandis. The initial N and P content of litter showed significant positive correlations with decay rates. Carbon and lignin content, lignin:N, and C:N showed significant negative correlations with decay rates. Soil total N and P, and rainfall, soil temperature, and soil moisture had positive correlations with decay rates. The rapid decomposition rates observed in comparison with other different forest litter decay rates confirm that tropical wet evergreen forest species are characterized by faster decomposition rates, indicating a faster rate of organic matter turnover and rapid nutrient cycling.
Starting Page	25
Ending Page	34
Page Count	10
File Format	PDF
ISSN	13416979
Journal	Journal of Forest Research
Volume Number	13
Issue Number	1
e-ISSN	16107403
Language	English
Publisher	Springer Japan
Publisher Date	2007-12-12
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Decay rate Lignin Litter decomposition Nitrogen Phosphorus Tropical wet evergreen forest Plant Ecology Plant Sciences Tree Biology Forestry Management Forestry
Content Type	Text
Resource Type	Article
Subject	Forestry

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