نتایج جستجو برای: plantations
تعداد نتایج: 7047 فیلتر نتایج به سال:
Expansion of oil palm plantations across the humid tropics has precipitated massive loss of tropical forest habitats and their associated speciose biotas. Oil palm plantation monocultures have been identified as an emerging threat to Amazonian biodiversity, but there are no quantitative studies exploring the impact of these plantations on the biome's biota. Understanding these impacts is extrem...
T. Schlichter and L. Montes (eds.), Forests in Development: A Vital Balance, DOI 10.1007/978-94-007-2576-8_5, © Springer Science+Business Media B.V. 2012 Abstract South American tree plantations expand at a rate of 5,000 km 2 /year favored by increasingly globalized markets and local economic conditions. The main hydrological impacts of these plantations involve shifts in (a) the partition of p...
ITC Limited Bhadrachalam Paperboards Division has successfully implemented a major research and development project begun in 1989 with a view to improving the productivity and profitability of plantations and making farm forestry an attractive land use option. The major research and development emphasis has been on genetic improvement of planting stock and improvement in the “package of practic...
Prediction equations based on 130 sample trees from thinned and unthinned loblolly pine (Pinus taeda L.) plantations in central Louisiana re presented for the green and dry weights of aboveground tree components. Sample trees ranged from 2 to 21 in. dbh, 18 to 94 ft in height and from 9 to 55 yr in age. Significant differences in partial stem weight between trees from thinned and unthinned stan...
this research was carried out in order to quantify throughfall (tf) and interception loss (i) and to compare the chemical composition of tf, i.e. lead (pb) and cadmium (cd) as well as electrical conductivity (ec) and ph beneath pinus eldarica and cupressus arizonica plantations and the open field rainfall. the research was accomplished in the chitgar forest park, a semi-arid polluted urban area...
Changes in the quality of water reaching forest floor are of the most important consequences of native and exotic tree species plantations for rehabilitating the derelict areas of the Caspian forests. The aim of this study was to compare the chemical composition of throughfall in plantations of Persian maple (Acer velutinim Bioss) and Turkish Pine (Pinus brutia Ten) in Darabkola Forest, Sa...
This study surveyed the exposure to pesticides among farmers in Chiang Mai’s highland agricultural area. Ethnic Hmong farmers, living in Baan Buak Jan, Mae Rim District, Chiang Mai Province were selected as the study population. Pesticide-specific urinary metabolites were used as biomarkers of exposure to a variety of pesticides, including organophosphorus pesticides, synthetic pyrethroids and ...
Indonesia’s forestry sector is in a dilemma due to the long-standing disparity between high processing capacity of forest industries and the limited supply of timber. The supply crunch has led to over-harvesting in order to meet demand and resulted in a decline of natural forests. The Indonesian government seeks to revive the forestry sector and secure its long term survival through a massive t...
Consumers' Attitudes Towards the Development of Transgenic Forest Trees and their Products in Greece
This paper aims to examine the attitudes of the consumers in Greece towards the use of biotechnology in forest plantations and their potential purchases of forest transgenic products. Three groups of factors related the consumers’ attitude on the use of biotechnology in forest plantations with the potential purchases of transgenic forest products: (a) the potential negative environmental impact...
This paper examines idiosyncrasies of tea plantation culture and politics in relation to Sri Lankan national and popular cultural typologies, with special reference to female tea plantation workers. Tea production in Sri Lanka is heavily based on manual labour, and it is the largest industry that provides accommodation for employees and their families. In this paper, it is argued that politico-...
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