ASSESSMENT OF TREE BIOMASS WITH RESPECT TO SOIL HEALTH OF DIFFERENT TREE SPECIES ESTABLISHED IN ARBORETUM AT UAS GKVK BENGALURU
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Date
2018-08-30
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University of Agricultural Sciences, Bengaluru
Abstract
The study entitled “Assessment of tree biomass with respect to soil health of
different tree species established in arboretum at UAS GKVK Bangalore” was carried out
in 30 year old plantation at tree arboretum. The study involved assessment of growth,
above ground biomass production, carbon sequestration, nutrient accumulation in soil and
R/S ratio general micro flora of four different tree species. The results revealed that
among different tree species the maximum tree height was observed in Artocarpus
hirsutus (15.74 m) and maximum girth at breast height (147 cm), volume (1.93 m3),
above ground biomass (453.75 kg/tree), tree C sequestration (204.19 kg/tree) was
recorded for Ceiba pentandra. At depth of 0-15 cm and 15-30 cm, R/S ratio for Bacteria,
Fungal population and Actinomycetes population was found to be highest in Artocarpus
hirsutus. Maximum soil moisture was found in Ceiba pentandra (12.02 %) and (12.9 %)
and bulk density was found highest in Sterculia companulata (1.14 g/cm3) and (1.6
g/cm3) at depth of 0-15cm and 15-30cm respectively. At depth of 0-15 cm and 15 -30 cm,
Electrical conductivity (0.20 ds/m) and (0.19 ds/m), Organic carbon (2.38%) and (2.25%)
and Phosphorous (40.74 kg/ha) and (24.1 kg /ha) content was found highest in
Artocarpus hirsutus. The available nitrogen (287.31kg/ha) and (270.95 kg/ha), Potassium
(109.3 kg/ha) and (96.0 kg/ha) and pH (6.45) and (6.2) was found highest in Ceiba
pentandra at depth of 0-15 cm and 15 -30 cm respectively. Therefore study revealed
findings are useful in the field of environmental science.
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