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Vijay Rawat , J. D. S. Negi

Abstract

Climate inter alia is the strongest ecological factor in determining the primary production. Eucalyptus terelicornis (Mysore Gum) is most widely planted species in India. In the present paper an attempt has been made to assess the primary production of the species in different agroecological regions of India. Depending on length of growing period (LGP) and precipitation, country has been divided into six agroecological zones and available data on biomass production has been stratified into different agroecological zones. In general biomass varied from 11.9 t/ha in three year old plantation to 146 than in 9 year old plantation in moist regions. In dry tropical region it varied from 5.65 t/ha in 5 year plantation to 135.5 t/ha in 9 year old plantation. In dry tropical regions biomass accumulation was more in cooler areas as compared to warmer areas. Where water is not the limiting factor comparatively higher mean annual temperature of around 25°C seems to produce higher biomass. A higher share of leaf biomass was observed in dry region. The ischolar_mainl/shoot ratio was also higher in dry tropical region.

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Vijay Rawat , J. D. S. Negi

Abstract

Climate inter alia is the strongest ecological factor in determining the primary production. Eucalyptus tereticornis (Mysore Gum) is most widely planted species in India. In the present paper an attempt has been made to assess the primary production of the species in different agroecological regions ofIndia. Depending on length of growing period (LGP) and precipitation, country has been divided into six agroecological zones and available data on biomass produetion has been stratified into different agroecological zones. In general biomass varied from 11.9 t/ha in three year old plantation to 146 t/ha in 9 year old plantation in moist regions. In dry tropical region it varied from 5.65 t/ha in 5 year plantation to 135.5 t/ha in 9 year old plantation. In dry tropical regions biomass accumulation was more in cooler areas as compared to warmer areas. Where water is not the limiting factor comparatively higher mean annual temperature of around 25°C seems to produce higher biomass. A higher share of leaf biomass was observed in dry region. The ischolar_main/shoot ratio was also higher in dry tropical region.

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Vijay Rawat , Dhan Singh , Pankaj Kumar

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Vijay Rawat , Sudhir Singh

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Vijay Rawat , Dhan Singh , Pankaj Kumar

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Climate change is a phenomenon of completing over time scale of hundred , thousands and millions of years. The features like increased flooding , landslide and storm damage , increased death from heat strokes , failure of traditional agricultural system through drought are all scenarios , which could be due to climate change. Global warming may also have serious implications for forest ecosystems , especially for plantations and the matching of tree species with sites , which may be affected by changed climatic conditions. Forests play an important role in sequestration of carbon globally. The study of potential impact of climate change on existing forest ecosystem is inevitably required for the further mitigation to the problem. The present paper examines the impact of global climate change on forest biodiversity.

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Vijay Rawat , Laxmi Rawat

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Few global issues have received more attention than climate change in recent years. Amidst all the discussion about the greenhouse effect one fact is certain; atmospheric CO₂ levels are rising. Forests are both source and sink of carbon dioxide. Carbon can be managed by increasing the efficiency of primary energy conversion and end use so that fewer units of primary fossil energy are required, secona approach is to substitute lower-carbon or carbonfree energy sources. Carbon sequestration could represent a third approach, which can be defined as the capture and secure storage of carbon in a system. United Nations Framework Convention on Climate Change (UNFCCC) through its Kyoto Protocol attempts to stabilize the emission of green house gases wherein emission and capture of Carbon dioxide through Land Use, Land Use Change and Forestry (LULUCF) has been recognized. A new set of definitions related to forestry for the implementation of the Kyoto Protocol has been finalized. Plantation forestry and trees out side forest offers enormous opportunity for carbon capture in India. Assuming that the present forest cover of the country will sustain itself with annual increase in area of plantation, regeneration of degraded forests and afforestation programmes and it is expected that Indian forests will continue to act as net C sink in future. Considerable amount of carbon credits can also be earned through the carbon sequestered by these plantations under the provisions of Kyoto Protocol.

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Laxmi Rawat , Vijay Rawat

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The course of annual, monthly and seasonal rainfall of New Forest has been discussed along with its variability, frequency, intensity over a period of 60 years (1931-1990). Annual rainfall at decadal intervals and 2 blocs of 30 years, extremes of rainfall recorded, variability of rainfall - monthly and seasonal; rainfall frequency -monthly and seasonal, rainfall intensity -annual, monthly and seasonal; temporal variation of frequency of rainy days have been analysed and discussed.

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Vijay Rawat , J. D. S. Negi

Abstract

No abstract

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