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Seasonal variation in biomass and energy of small roots in tropical dry deciduous forest varanasi india

Singh, K.P.; Singh, R.P.

Oikos 37(1): 88-92

1981


ISSN/ISBN: 0030-1299
DOI: 10.2307/3544077
Accession: 006374147

Seasonal variation in small root (< 25 mm diameter) biomass and energy in 2 stands of tropical dry deciduous forest showed that roots < 6 mm diameter constituted 43-71% of the peak biomass during the rainy season. The calorific value increased with root diameter. Seasonal fluctuations in the calorific values occurred, with the lowest obtained during the rainy season. The mean biomass across the year was 6467-7627 kg ha-1 dry wt (2730-3144 .times. 104 kcal ha-1). The net production was 2412-2785 kg ha-1 yr-1 (759-838 .times. 104 kcal ha-1 yr-1), representing a flow of about 0.13% of annual usable solar radiation (.apprx. 0.5% during the rainy season). The annual root biomass replacement was estimated to be 37%. The small root weight in these forests was compared with that of other tropical forests.

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