V. K. Srivastava , A. M. Rai , R. K. Dixit , M. P. Oza , A. Narayana , E. S. Murty

Abstract

Mean crown diameter showed significant correlation with mean tree volume in man-made (Teak and Sal) and natural (dry and moist deciduous) forests. The value of correlation coefficient ("r") between mean crown diameter and mean tree volume was close to the value of "r" between DBH and mean tree volume. Regression equations were also developed and the predictive performance of the equations evaluated. It was concluded that mean crown diameter may be used to estimate mean tree vol ume in the above type of forests, as the growth of the tree is also reflected in the growth of the crown spread. Hence, it may be a good measure to estimate tree volume. It is therefore suggested that mean crown diameter may also be considered an important parameter in forest mensuration.

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K. Gurumurti , V. K. Srivastava

Abstract

Investigations on growth analysis in Pinus elliottii, which has high rate of productions revealed that there is a close correlation between total biomass, leaf area as well as leaf efficiency. The results suggest that during early stages canopy growth is vertical and subsequently horizontal. The leaf efficiency though increases with age, the rate of increase declines with age. Net assimilation rate shows a fluctuating trend and the mean NAR is much higher when compared to other conifers which explains the higher turnover of dry matter in this species.

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S. C. Sharma , V. K. Srivastava

Abstract

Distribution of organic matter in differenf tree components of 3,5,9, 11 and 13 years old plantations of Pinus patula has heen discussed. The total biomass ranges from 7 tonnes (3 years) to 194 tonnes (9 years) per ha with 82 to 87 per cent being contributed by the aboveground parts and 13 to 18 per cent by ischolar_main.

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O. N. Kaul , R. P. Singh , V. K. Srivastava , K. Gurumurti

Abstract

The distribution of organic matter in various tree components for 10, 20, 30 and 40 years old plantations of Pinus elliottii has been discussed. The total biomass ranges from about 169 tonnes (10 years) to 529 tonnes (40 years) per ha with 81 to 85 per cent being contributed by the above-ground parts and 19 to 15 per cent by the ischolar_mains.

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