Informatics Publishing Limited

Dhan Singh , Rajiv K. Srivastava , V. P. Khanduri

Abstract

Medicinal plants have attracted considerable interest in recent years. Commcrcial enterprises and local dwellers are regularly exploiting natural heritage of these mcdicinal plants. There is an urgent need of conservation of these valuable medicinal plants through cultivation. Poor marketing structure in the country is the primary challenge towards its promotion and cultivation. In Uttaranchal, attention has been given to conservation/cultivation and its open trading system by the government. The present paper highlights the cultivation and opcn trading aspects of medicinal plants in the State.

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Rajiv K. Srivastava , Dhan Singh

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Forest ecosystems are influenced by a variety of factors , both natural and human induced , which ultimately led to change in biodiversity and consequently changes the climate of existing system. Climate warming due to anti-environmental human activities has resulted a threat to biodiversity. Forest fire is one of the major factors , which influence the forest ecosystem and climate of the entire region. One factor may not solely responsible for any change in climate. This is a complex system in which biota; plants in particular , interact with climate and with atmospheric gases. Forests play an important role in sequestration of carbon globally. The study of impact of forest fire on existing forest ecosystem is inevitably required for the further mitigation to the problem. The present paper examines the impact of forest fire on climate change and forest biodiversity.

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Rajiv K. Srivastava , Dhan Singh , V. P. Khanduri

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Biological transformation of carbon is a primary mechanism for removing carbon from the atmosphere. Standing stock of vegetation plays a major role in carbon sequestration at present as well as in the future. This biospheric carbon sequestration is essentially a huge natural biological scrubber for all emission sources of carbon. An estimated value of 2GtC is removed from the atmosphere each year by the earth's mantle of vegetation. Forest fires the world over due to ever increasing population pressure, release stored carbon into the atmosphere in large quantities every year. Forest fires not only damage the forest wealth but also release huge amount of the secured storage of carbon in the form of forests into the atmosphere. The present paper examines the carbon sequestration and consequences of forest fire carbon emission to the climate.

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Rajiv K. Srivastava

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Elephant (Elephas maximus), the most important wild animal found in the Eastern Ghats facing mounting problems by the way of biotic interference. In this paper biotic interference, other problems and their effects in two most crucial corridors (Vethalakkal-Badanavadi, RF and Vethalakkal-Marandahalli) of elephants in the Eastern Ghats have been studied in detail. These corridors have never been studied so far, nor highlighted in the past. This is the first time the corridors rout were studied in details. The area is situated in and around Hogenakkal at the border of Tamil Nadu and Karnataka. Adverse impact faced by the elephants in these corridors of monoculture, fragmentation and poaching have also been studied.

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Rajiv K. Srivastava

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The Nilgiri Biosphere, which is having countless micro flora, fauna and the germplasm of various rare, threatened and endemic species, is facing continuous pressure by one way or the other. The greatest pressure on forest is by way of forest fire, which is not only retarding the growth of existing standing vegetation but also not allowing new recruits to emerge out on the forest floor. If the process is not checked, many of the endemic flora and fauna will disappear from the biosphere reserve even before its documentation is completed.

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Rajiv K. Srivastava

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Rajiv K. Srivastava

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Rajiv K. Srivastava

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Rajiv K. Srivastava

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Terminalia chebula is a highly valuable forestry species, not only for its timber value, but even more so for its medicinal and commercial value as tannin. Its natural regeneration by seed is poor due to its hard mesocarp, thick shell and poor formation of kernel and vegetative propagation through quite successful, requires juvenile period for fruiting. To over come time difficulty its cleft grafting was tried and was successful in getting good graft plants in good time. These were also well branched, gave suitable branchlet for approach grafting which was also very successful and opens new horizon's for the formation of a clonal bank for this species. This new technology will also help farmers in obtaining sustained income gains as well.

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Rajiv K. Srivastava , K. Sivasubramaniam

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Rajiv K. Srivastava , K. Chidambaram , G. Kumaravelu

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Impact of forest fire and biotic interference on bio-diversity of the Eastern Ghats due to human interference and man-animal conflict have been discussed.

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Rajiv K. Srivastava

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Sholas are relics of extinct vegetation which are now confined to a few pockets in the world. Sholas are probably one of the most valuable treasures of the hills as the prime water shed and as shelter for wildlife. They are considered 'living fossil' (Gupta, 1968) for their sheer antiquity and virtual non-regeneration. Even asthetically they are unmatched. Once destroyed, is difficult for them to reestablish in adverse factors such as frost (Ranganathan, 1938), wind and drought for which they are prone. Now due to plantations raised by Forest Department in grassland. Sholas are again in the process of re-establishing slowly in the areas from where once they disappeared.

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