Jasbir Singh , Kuntala N. Barua

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Jasbir Singh , Anup Chandra , Hem Chandra Saikia , G. Thakuria

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A socio-economic study was conducted in four villages of Karbi Anglong District of Assam. Cent percent households were surveyed. Sex ratio (females per 1000 males) was found very high among the shifting cultivators. Literacy rate and annual income and saving is very low among the shifting cultivators. It is revealed that overall socio-economic condition of the shifting cultivators is very poor. Better educational levels and adequate efficient infrastructural facilities will provide impetus to the positive growth of socio-economics of the shifting cultivators. In addition to this, sustainable land use system like agro-forestry and forest based industry, cash crops, etc. can be introduced in the jhum area. It will not only improve the ecology of the area but also will help in upliftment of shifting cultivators.

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Jasbir Singh , I. P. Borah , A. Boruah

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The present study highlights the physico-chemical properties of soils under three different plant communities. In natural forest the soil was sandy loam in texture and was more acidic in nature in comparison to jhum fallow. Total N, available P, organic C and exchangeable Ca, Mg and K were found to be high in natural forest followed by bamboo forest and jhum fallow respectively. The concentration of all the nutrients were fairly high in upper soil layers and gradually decrease with soil depth. Due to the high rate of leaching, exchangeable calcium in lower soil depths was found to be high in bamboo forest and jhum fallow.

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Jasbir Singh , G. N. Gupta , K. G. Prasad

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Present paper envisages information on the influence of climate, soil and topographic factors for the growth and distribution of three important tree species namely Anogeissus latifolia, Terminalia tomentosa and Tectona grandis in Mudumalai Forest Division of Tamil Nadu. T. tomentosa was found suitable in regions having > 1525 mm of annual rainfall, whereas A. latifolia and T. grandis performed well in the relatively lesser rainfall areas as well. T. tomentosa prefers very deep soils (> 120 cm) whereas good growth and density of T. grandis and A. latifolia were recorded on moderately deep soils. Density and growth of T. grandis was higher on medium textured soils whereas the density of A. latifolia was not affected by coarse textured soils. Higher growth and density of T. tomentosa was associated with poor P₂O₅ K₂O and Mg contents of the soil. A. latifolia and T. grandis were found on soil rich in Ca and Mg. Soils rich in organic carbon and CEC occurred under better growth and density of teak.

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Jasbir Singh , K. G. Prasad , G. N. Gupta

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Present work was an attempt to study the influence of climatic, physiographic and edaphic factors on the growth and distrihution of Teak (Tectono grandis) in the eastern slope of western ghats. Based on soil analytical and teak density data obtained during the survey of Mudumalai Wildlife sanctuary and Coimbatore Forest Division in Tamil Nadu it was observed that, in general, teak prefers moderately deep, well drained. Medium textured soil, moderate temperature and gentle slopes. The data also suggest that high to very high teak density sites have relatively higher organic carbon; exchangeable calcium and cation exchangeable capacity.

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