In India plantations of exotic tree species like populous debtoides, Acacia spp., Eucalyptus spp., Laucaena leucocephala and Prosopis juliflora etc were promoted to meet the increasing industrial and fuel demand. The exotic acacia and eucalyptus were introduced in Nilgiris Hills in 1858 where E. globules was planted along with E. Robusta.

The effects of Acacia tortilis, Eucalyptus camaldulensis, Dalbergia sissoo and Tecomella undulata based windbreaks, varying in their morphological characters, were assessed on wind regimes of downwind/leeward side on farmers' field in Jaisalmer district of arid Western Rajasthan.

An experiment on the influence of tree cover on physical properties of soil was carried out at Instructional Farm, ASPEE College of Horticulture and Forestry, Navsari (Gujarat) under twelve-years old plantation during the year 2002-2003. The soil samples were collected from three depths (0-30, 30-60, 60-90 cm).

Although soils are generally considered to wet readily, some are actually water-repellent at the surface. This communication presents the recent progress in relating the severity of water repellency to different soil management practices and land uses under the lower Himalayan region of India.

Jasrota Wildlife Sanctuary, with an area of 10.04 km2, is situated on the right bank of the Ujh river in district Kathua, J&K State. The mammals of Jasrota Wildlife Sanctuary represent 4.3% of the total mammals (372 species) recorded by Hossetti

The efficacy of spider as indicator of habitat conditions in Tarai Conservation Area was examined. To compare habitat specific spider communities, five vegetation types were sampled from March 2005 to August 2006 by using pitfall traps and other semi-quantitative collection methods along transects.

A study was conducted to estimate the soil organic carbon pool under Eucalyptus, Poplar, Shisham and Teak plantations in Haridwar and Dehra Dun, districts of Uttarakhand and Yamunanagar District of Haryana State.

THE RECENT move of the Tamil Nadu Forest Department to re-introduce largescale cultivation of eucalyptus trees in the state invites stiff resistance from environmentalists on the ground it would create ecological imbalance. Experts have always raised concern over the extensive cultivation of this species. "Monoculture of eucalyptus cannot be recommended," said Supraja Dharani, Tree Foundation. "If the intention of the forest department is to increase forest cover in the state, it should plant indigenous species of trees and maintain the bio-diversity of the region," she added.

A silent revolution has taken place in productivity and profitability of plantations through clonal Eucalyptus, with productivity more than double compared to seed route plantations. The clonal plantations under rain-fed conditions are safer investment, while the irrigated clonal plantations under agro-forestry models are more profitable as compared to agricultural crops.

India has growing shortages of timber and wood-based products. Agro-forestry plantations promoted by wood-based industries and raised by a large number of small farmers and imports play a major role in bridging the demand supply gap. Private sector companies like Wimco and ITC have played a major role in promoting technology based high yielding clonal plantations under agro-forestry on commercial scale.

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