Structure and function of oak forest ecosystem of north - eastern India I. Biomass dynamics and net primary production

  • E.J. Singh Department of Life Sciences, Manipur University, Imphal-795003, India
  • P.S. Yadava Department of Life Sciences, Manipur University, Imphal-795003, India
Keywords: Oak forests, biomass, non-photosynthetic to photosynthetic ratio, net primary production, northeast India

Abstract

  The paper elucides with biomass dynam­ics and net primary productivity in two sites of oak forests in north-eastern India. The allometric rela­tionship of age and dbh (diameter breast height) in different important trees with respective biomass (i.e. bole, branch, twig and leaf) were computed and the r2 values were highly significant. The total non-photosynthetic to photosynthetic biomass ratio de­creased with the increase of age. The accumulation of biomass in the photosynthetic parts ranged from 1 to 3 times in age series of 12 tree species. Of the total aboveground forest biomass, tree acounted for 98.33%, shrub 1.09% and herb 0.58%. The mean and current annual production of tree species varied from 0.1 to 5.0 t ha-1 and 0.6 to 4.8 t ha"1 respectively. Production fefficiency in terms of net production per unit weight of leaf or per unit area of leaf varied from 0.70 to 1.22 kg net production m2 leaf area per year. The biomass accumulation ratio in tree layer ranged from 7.57 to 8.99. The total net production in both forests ranged from 27.84 t ha-1yr-1 to 28.32 t ha-1 yr-1.
Published
1994-12-01
How to Cite
Singh, E., & Yadava, P. (1994). Structure and function of oak forest ecosystem of north - eastern India I. Biomass dynamics and net primary production. Oecologia Montana, 3(1-2), 1-9. Retrieved from http://om.vuvb.uniza.sk/index.php/OM/article/view/34
Issue
Vol 3 No 1-2 (1994): Oecologia Montana
Section
Standard articles

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