S. Singh , R. M. Singhal

Abstract

Chemical composition and the proportion of primary minerals in the silt fractions were studied in the soils of Mussoorie Hills (U.P.), which have developed over different parent materials under varying climatic conditions and vegetation. The study reveals that the silt fraction of the soils developed over shales under oak contains a relatively lower proportion of heavy minerals and a higher proportion of light minerals as compared to those developed over limestone under conifers indicating thereby more podzolization and less illimerization in them. Alteration of kaolin into muscovite and accumulation of quartz muscovite and heavy minerals in the surface lowest and illuvial horizons respectively, of the former also indicate more podzolization and intense weathering in them as compared to latter which were rich in calcite, dolomite and other resistant minerals.

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

Abstract

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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