Upendra Prasad , S. N. Trivedi

Abstract

A precise estimate of parameters 't' and 'z' I e., the time taken to pass from class II to class I and the mortality per cent during this period respectively is needed to regulate yield according to Snythies Safeguarding Formula. No scientific estimate of 't' and 'z' for salai (Boswellia serrata) tree is available in Bihar. This paper specifies a quadratic regression equation between DBH and five-yearly increment in DBH, generates an 'age-diameter' table and estimates 't'= 30 years and 'z'=9% for salai trees in Daltonganj South Division of Bihar.

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S. N. Trivedi

Abstract

This paper discusses three models to incoporate the risk of illicit felling and applies them to predict the yield from Eucalyptus hybrid plantations in India for a spacing of 2 m × 2 m. The optimum rotations for different quality classes are discussed. The paper shows that losses concentrated by area are more serious than those removing the same proportion of cumulative volume with or without affecting the increment.

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S. N. Trivedi

Abstract

India is the biggest fuelwood producing country in the world. This article is an atempt to study the trend of production of fuelwood and other energy commodities in India over the years and tha role of the fuelwood in the rural energy budget as compared to some other countries. The articles throws light on the alarming situation of the fuelwood deficit, its effect on deforestation and emphasizes the need to chalk out a mere dynasis and extensive programme of fuelwood plantations.

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