ABOVE GROUND VOLUME AND CARBON STOCK IN DIFFERENT AGE GROUP PLANTATIONS OF TEAK (Tectona grandis Linn. f.) IN BHABAR AND SHIVALIK REGIONS OF UTTARAKHAND

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Date
2015-07
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College of Forestry, Ranichauri, V.C.S.G. Uttarakhand University of Horticulture and Forestry
Abstract
Above ground volume and carbon stock assessment in 27 different age group of teak plantations comprising five compartments, viz., Paniyali, Lalpani, Sigaddi, Sukhro and Saneh of Kotdwara and Kothari range, Kotdwara Forest Division, Pauri Garhwal, Uttarakhand was carried out with three sample plots of 0.1 hectare which were laid out arbitrarily on each age group of plantations of teak. Observations on growth parameters like total tree height, dbh and number of trees were recorded and average data per hectare was calculated for basal area, above ground volume and growing stock, biomass and carbon sink etc. Assessment of stand density and population structure under different diameter classes was influenced by different sites and age groups of teak plantations. Among five various compartments, in lower diameter class (10-20 cm) and middle diameter classes i.e., 20-30 cm and 30-40 cm the stand density and population structure was dominated in younger and middle aged plantation sites viz., S2 (Saneh-15B-29 years old), S4 Sukhro-2-31 years old), S6 (Sukhro-1 -32 years old), S8 (Saneh-12B), S7 (Paniyali 2A) and S7 (Paniyali 2A) at the age of 33 years old. Further in higher diameter classes (50-60 cm and 60-70 cm), stand density and population structure was very less or absent in all the plantation sites. While, the average above ground volume was ranged between 0.31 m3/tree to1.32 m3/tree was observed in Sigaddi-18 (S8) at the age of 33 and Saneh-15 (S27) at the age of 48 years, respectively. Similarly, the maximum and minimum values of growing stock under all the diameter classes were 817.94 m3/ha at in Sigaddi-18A (S26) at the age of 48 and 244.52 m3/ha in Sigaddi-18 (S8) at the age of 33 years. Above ground biomass (AGB), below ground biomass (BGB) and total biomass (TB) also significantly influenced by different sites and age group of teak plantations. The extent of increase in AGB (687.07 t/ha), BGB (171.77 t/ha) and TB (858.84 t/ha) in S26 (Sigaddi-18A) plantation site at the age of 48 was 70.10 % over S8 (Sigaddi-18B) in AGB (205.40 t/ha), BGB (51.35 t/ha) and TB (256.75 t/ha) at the age of 33 years. Further, the total carbon (TC) (429.42 t/ha) and CO2 (1575.97 t/ha) in was highest Sigaddi-18A (S26) plantation site at the age of 48 years. Whereas, the lowest TC (128.37 t/ha) and CO2 (471.13 t/ha) at the age of 33 years was observed in S8 (Sigaddi-18). The tree diameter (cm) showed highly significant positive correlation with volume (R2=0.903), total biomass with total carbon (R2=0.859). The variation in diameter could explain nearly 90.3 % of the variation in volume, 85.9 % variation in total biomass and total carbon. Therefore, the diameter can be a good predictor of volume, biomass and carbon sequestration in teak plantations. Among different age group and plantation sites of teak (Tectona grandis Linn. f.) in Bhabar and Shival regionsS(Sigaddiof-18A)Uttarakhand”plantationsiteattheageof 48 showed stand density 26 (743 N/ha), better total tree height (17.81 m), dbh (37.67 cm), basal area (44.77 m2/ha), above ground volume (1.10 m3/tree) and growing stock (817.94 m2/ha), biomass (858.84 t/ha), carbon sink (42942 t/ha) and CO2 (1575.97 t/ha) compared to other age group plantations of teak and sites.
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