S. N. Rai , S. K. Chakrabarti

Abstract

The aggregate demand for the year 1996 of fuelwood for the country was 201 million tonnes i.e. 213.8 kg per capita, per year for a population of 940 million. Similarly the demand of timber was 92 million m³ i.e. 0.098 m³ or 3.5 cft per capita per year. The current sustainable production of fuel wood from forests is 17 million tonnes and from farm forestry and other areas 98 million tonnes. There is net deficit of 86 million tonnes of fuel wood, which as a compulsion is being removed from the forests. The situation regarding timber (at current productivity) is not grave but moratorium on fellings and market demands creates pressure. The paradox is that forests produce 70 per cent timber and 30 per cent fuel wood, while the demand for wood is around 70 per cent as fuel wood and 30 per cent as timber. This really exacerbates the situation. The forests have at least 5 times more pressure on them for fuel wood and small timber than what they can withstand, as a matter of sustained productivity.

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S. K. Chakrabarti , K. S. Gaharwar

Abstract

In this study, volume factors for Shorea robusta (Sal) growing in different parts of the country have been calculated. An effort has been made to establish statistical relationship between the dependent variable (V/D²), where V is the average volume and independent variable, reciprocal of diameter midpoint (D) for the country as a whole by using the Method of Leaf Squares. Volume of Sal can be estimated by using this relationship.

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S. K. Chakrabarti , K. S. Gaharwar

Abstract

In this study, volume factors for Bijasal growing in different parts of the country have been calculated. An effort has been made to estahlish statistical relationship between average volume and diameter class midpoint at breast height (or the country as a whole. By using the method of Least Squares, a linear relationship between the logarithm of average volume and logarithm o f diameter class midpoint at breast height has been established. Volume of Bijasal can he estimated by using this relationship.

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S. K. Chakrabarti , K. S. Gaharwar

Abstract

The Forest Survey ofIndia has been carrying out inventory surveys for estimating the growing stock of various species and has developed a number of local volume equations based on ground inventory. An effort has been made to establish statistical relationship between average volume and diameter mid-point for country as a whole. Two relationships have been established by using Method of Least Squares. One is linear and the other is parabolic relationship. Volume of teak can he estimated by using parabolic relationship. However, for lower diameter classes (upto 30 cm) linear relationship can also be used to calculate the volume.

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