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A. S. Rawat

Abstract

(1) Change in the undergrowth. After the first few years of burning, there were clear indications of the evergreen undergrowth, such as ferns and Piper spp., getting reduced, and it was expected that the annual burning would eventually eradicate these species, especially Pollinia ciliata (sau grass) which prevents the establishment of sal, and that Imperata arundinacea (thatch) would replace Pollinia; but the incidence of the thatch is small and it is replacing the sau grass in openings only. After about 15years of annual burning, most of the evergreen species still persisted. Burning did not lessen the number of climbers, nor did it kill them. They remained more or less the same in the burnt and unburnt plots, though slightly less luxuriant in the former. (2) Cost if Climber cutting. Only in the case of Buxa division was the cost of climber cutting significantly less for the burnt plots compared to the unburnt ones. This significant reduction in the cost may be due, to the mechanical advantage of the cleaner ground in the burnt plots which makes it easier to the labour to work in them. (-3) Rate of growth and volume increment of sal. Controlled burning did not produce any beneficial effect on the diameter and height increment of sal; in some cases it has rather produced, with regard to diameter, the reverse effect. On this evidence we may therefore state that burning is setting back the diameter development if sal plantations in Bengal to some extent. It makes the soil drier which perhaps leads to reduction in the rate of sal growth but height growth has remained unaffected. The present technique of clearfelling the climax forest, burning the debris and planting sal are perhaps responsible for the establishment and good growth of sal in the moist soils of the Bengal plantations.

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A. S. Rawat

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On the evidence of the results obtained from the data of 5 clearfelled sample plots of different ages, species and localities, the following conclusions may be drawn: 1. The present method of selection of sample trees for measurement in a sample plot, is a biased method which always gives higher figures than the actual values as well as those derived by random sampling both with and without stratification. 2. The current method (based on Schwappach's height and form factor curve method) may be replaced by stratified random sampling scheme which has given more satisfactory results than the former. 3. To estimate tree growth and volume of a sample plot by stratified random sampling design, with sufficient precision for all practical purposes, a sample should consist of at least 15 trees.

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A. S. Rawat

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A. S. Rawat

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S. N. Dabral , A. S. Rawat

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A. S. Rawat

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In this paper an attempt has been made to describe various methods for obtaining increased precision. Firstly the sampling technique explained and suggested for forest surveys, is stratified random sampling procedure which considerably reduces variability and enhances precision; secondly, the ratio method of estimation has been proposed when the areas of the sampling units are unequal and thirdly, to achieve this end, use may be made of corresponding values collected at some previous date when a hundred percent enumeration was carried out. With a view to illustrate the use of such techniques to working plan practices, solved examples are given and the method of analysis applied in each case explained step by step in Appendices I-III.

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V. J. Chacko , A. S. Rawat , G. S. Negi

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The results of point sampling conducted, probably for the first time in India, in 45.32 hectare chir stand of Champion Block, New Forest, using wedge prisms of basal area factors 10, 15, 20 and 25 in British units (2.296, 3.444, 4.591 and 5.739 in Metric units) are presented and compared with plot sampling of the same area. The study has demonstrated that prisms with B.A.F. 10 or 15 are most suitable for enumerating the stand. The results also indicate that point sampling based on 20 to 25 objectively selected sample points in 30 to 40 year old chir stands could furnish estimates of basal area per hectare and number of stem. per hectare with standard errors of 5 and 6 per cent of the true values Respectively.

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V. J. Chacko , A. S. Rawat , P. C. Dave , S. Singh

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This paper presents the results of the pilot survey conducted in Bori, Hoshangabad Forest Division, M.P., the second in the series of pilot surveys for bamboos conducted by the Statistical Branch, F.R.I. The terrain was quite hilly and undulating but the area was among the best bamboo producing areas of the Division. The results of the pilot survey have demonstrated that separate estimates for each compartment with a margin of error within 5% , could be obtained if a complete count of clumps is made and 1 %, clumps selected randomly are used for counting culms according to various age and end use classifications. The pilot survey has also demonstrated the usefulness of sub-sampling of sub-compartments when estimates are desired only for large areas comprising of a number of compartments.

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A. S. Rawat , M. Ahmad

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Nawa Bahar , Preeti Sharma , A. S. Rawat

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Diploknema butyracea is fast growing species belonging to family Sapotaceae. Seed germination and seedling growth parameters (collar diameter, height,number of leaves, leaf area, biomass and stock quality index) has been studied in field condition to evaluate the nursery technique for quality seedling production. The seed germination was found epigeal in nature (the cotyledons remain above the soil surface). The growth performance of seedlings in directly sown polybags was better in comparison to the transplanted polybags.

Keywords

Germination, Seedling Growth, Nursery Technique, Transplanted Polybags

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U. C. Gairola ¹, A. S. Rawat ¹

Affiliations
1 Department of Mathematics, H. N. B. Garhwal University, Campus Pauri, Pauri 246001, IN

Abstract

The main purpose of this paper is to establish the common fixed point theorem for non-continuous maps using the strict contractive condition of integral type under occasionally weakly compatible maps.

Keywords

Occasionally Weakly Compatible Maps, Strict Contractive Condition, Meir-Keeler Contraction Condition.

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