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Biomass Dynamics in Grasslands of Manipur
A. Thokchom, M. R. Khan, and P. S. Yadava
Abstract:
The aboveground live biomass in the grasslands of Manipur varied significantly, ranging from 220.74 g m-2 in January to 812.89 g m-2 in September. The growth patterns of seven dominant species observed at these study sites exhibited distinct variations in their peak biomass values. The amount of standing dead material was recorded as lowest in February, measuring 321.23 g m-2, and peaked in November at 864.14 g m-2. Litter biomass fluctuated between 78.46 g m-2 in August and 205.56 g m-2 in December, while belowground biomass ranged from 1,074.00 g m-2 in June to 1,622.62 g m-2 in November throughout the study period. Notably, the highest concentration of belowground biomass was found in the 0-10 cm soil layer, with variations ranging from 73.24% in February to 83.36% in May. The root-to-shoot ratio was observed between 0.73 and 2.05. The analysis of variance for live biomass, standing dead material, litter, and belowground biomass indicated highly significant differences across the various months.
Keywords: Aboveground biomass, Live biomass, Standing dead, Below ground biomass
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