“BIOMASS, NET PRIMARY PRODUCTIVITY AND CARBON SEQUESTRATION IN LEGUMINOUS AND NON LEGUMINOUS TREE SPECIES IN RED LATERITIC SOIL IN CHHATTISGARH”
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Date
2006
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Indira Gandhi Krishi Vishwavidyalaya, Raipur
Abstract
Study entitled “Biomass, Net Primary Productivity and Carbon Sequestration in Leguminous and Non Leguminous Tree Species in Red Lateritic Soil in Chhattisgarh” was conducted during 2004-2005. Two leguminous (Dalbergia sissoo and Cassia siamia) and one non-leguminous tree (Tectona grandis) were under taken for the above study. The morphological growth characters viz., average GBH, total mean
height, clean bole height, crown width and crown length were recorded.
Average GBH for all species ranged between 11.62 and 18.59cm. The total
mean height ranged between 3.72 and 4.83 m. Clean bole height ranged
between 0.81 and 2.91 m. Crown width ranged between 1.80 and 4.00 m and
crown length between 0.81 and 3.55m.
The above ground biomass ranged between 1.75 and 4.89 t ha-1 for all the species. The highest above ground biomass was recorded in Cassia siamia (4.89 t ha-1), while the lowest was recorded in Tectona grandis (1.75 t ha-1). The higher proportion of above ground biomass was allocated to stem (3.08 t ha-1) followed by roots (1.51 t ha-1) and leaves (0.46 t ha-1). The below ground biomass ranged between 1.22 to 1.88 t ha-1 across all the species with height being 1.88 t ha-1 in Cassia siamia and lowest (1.22 t ha-1) in Dalbergia sissoo. The total tree biomass varied from 3.18 to 6.77 t ha-1 and also highest in Cassia siamia and lowest in Tectona grandis. The annual net primary production of trees varied from 1.03 to 1.91 t ha-1 yr-1 and
was highest in Cassia siamia (1.91 t ha-1 yr-1) followed by Dalbergia sissoo (1.31 t ha-1 yr-1) and Tectona grandis (1.03 t ha-1 yr-1). The storage of carbon ranged between 1354.74 and 3079.86 kg ha-1 for all the species. The maximum storage of carbon was in Cassia siamia (3079.86 kg ha-1) followed by Dalbergia sissoo (2333.37 kg ha-1) and minimum in Tectona grandis (1354.74 kg ha-1) .The carbon sequestration of the species varied from 434.63 to 867.96 kg ha-1yr-1, which was maximum under Cassia siamia and minimum under Tectona grandis. The bulk density under three species ranged between 1.11-1.16 g cm-3. The soil texture under all the three species was silt loam. The soil pH ranged between 7.38 to 7.63. The soil moisture ranged from 13.91 to 17.35 per cent. The organic carbon content in soil was 0.315 to 0.398 per cent. Total nitrogen ranged between 0.154 to 0.181 per cent total phosphorus in soil was 0.027 to 0.038 per cent across the three species and exchangeable potassium in soil ranged between 0.342 to 0.379 per cent. On short term basis it can be concluded that the leguminous tree species are superior over the non leguminous tree plantation in red lateritic soil in Chhattisgarh.
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