Xem 1-20 trên 1321 kết quả Forests
  • Forest Laboratories là công ty cổ phần được thành lập năm 1956. Trụ sở chính của công ty ở tại địa chỉ 909 Third Avenue, New York, Hoa Kỳ. Giám đốc điều hành hiện tại là ông Howard Solomon. Hiện nay, Forest có khoảng 5.600 công nhân. Forest là công ty dược, chuyên sản xuất và bán những loại thuốc kê đơn và thuốc không kê đơn. Thuốc chủ yếu là trị các bệnh như trầm cảm, Alzheimer, đau thần kinh, tăng huyết áp, hen suyễn, bệnh tiêu hóa…...

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  • Remote sensing has been defined as the detection, recognition, or evaluation of objects by means of distant sensing or recording devices. In recent decades, remote sensing technology has emerged to support data collection and analysis methods of potential interest and importance in forest management. Historically, digital remote sensing developed quickly from the technology of aerial photography and photointerpretation science. In forestry, information extracted visually from aerial photographs is well-understood, well-used, and integrated with field surveys.

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  • Vietnam is mostly located in the tropical region; Hilly and mountainous regions account for Hilly and mountainous regions account for ¾ of of VietnamVietnam’’s total natural land;s total natural land; Vietnam has coastal lines more than 3,000 km Vietnam has coastal lines more than 3,000 km long;long;High diversity of forests: tropical rain forest in High diversity of forests: tropical rain forest in most region, submost region, sub-tropical forest in the north and tropical forest in the north and at high altitudes, mangrove forest along at high altitudes, mangrove forest along coastlin...

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  • Research in tropical forestry is confronted with the task of finding strategies to alleviate pressure on remaining forests, and techniques to enhance forest regeneration and restore abandoned lands, using productive alternatives that can be attractive to local human populations. In addition, sustainable forestry in tropical countries must be supported by adequate policies to promote and maintain specific activities at local and regional scales.

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  • Forests are an integral part of global sustainable development. The World Bank estimates more than 1.6 billion people to be dependent on forests for their livelihoods with some 300 million living in them. The forest product industry is a source of economic growth and employment, with global forest products traded internationally is estimated at $327 billion. The Food and Agriculture Organization (FAO) estimates that every year 130,000 km² of the world's forests are lost due to deforestation.

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  • The concept of forest sustainability dates from centuries ago, although the understanding of sustainable forest management (SFM) as an instrument that harmonizes ecological and socio-economic concerns is relatively new. The change in perspective occurred at the beginning of the 1990s in response to an increased awareness of the deterioration of the environment, in particular of the alarming loss of forest resources. The main and most striking cause of this deterioration is the deforestation occurring in some areas of the world.

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  • Sustainable forest management (SFM) is not a new concept. However, its popularity has increased in the last few decades because of public concern about the dramatic decrease in forest resources. SFM is generally implemented using criteria and indicators (C&I) that define forest management standards, and several countries have established their own sets of C&I within the framework of different international or regional processes. Nevertheless, none of the C&I systems have been universally accepted and future research should consider the current and future indicators....

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  • Forests play a major role in global carbon (C) cycle, and the carbon density (CD) could reflect its ecological function of C sequestration. Study on the CD of different forest types on a community scale is crucial to characterize in depth the capacity of forest C sequestration.

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  • Report by the Comm. on Climate and Tropical Forests, which was formed in 2009 to ensure effective protection of tropical forests primarily as part of U.S. climate change policies, but also through engagement in internat. agree. The intent has been to create actionable, politically viable recommend. that can inform and guide the U.S. in its legislative and diplomatic negotiations on this issue. Contents: Summary for Policy Makers; Climate Change and Tropical Forests; Financing Forest Emission Reductions; International Cooperation; Designing U.S.

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  • The rain forest takes an immense breath and then exhales, once every four or five years, as a major global weather pattern plays out, usually heralded by El Nin˜o–Southern Oscillation. While this powerful natural cycle has occurred for many millennia, it is during the past decade that both the climate of Earth and the people living on it have had an increasing influence on the weather pattern itself, with many biological consequences. In Southeast Asia, as also in most of the Neotropics, El Nin˜o accompanies one of the most exuberant outpourings of nature’s diversity.

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  • Hau Loc is a coastal district, located in the northeast of Thanh Hoa Province. its total natural land is 14,367.19 ha, 1.170 hectares of alluvial sites is suitable for planting forest and raise sea food. the The County has authorized 27 units (26 communes and townships 1). the total population of the district The year 2009 is 163.971 people, with density of 11.4 people per km2. The County has five coastal communes (Rhodes, Minh Loc, Ngu Loc, Hai Hung Loc and Loc) locate in East to the natural area is 3442.25 ha (accounting for 23.

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  • Following a discussion of what the phrasethe Tropics means, this volume in the Biomes of the Earth series looks at characteristic geology, flora, fauna, and people living in tropical forests today.

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  • This book is designed to help forest owners, loggers, and others better understand the Forest Practices Rules and how they protect public resources, such as fish, water, wildlife, and state and municipal capital improvements. In it, you’ll find commonly encountered rules, with photographs and illustrations that show what these operations look like.

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  • In 1950, the United States Department of Energy (then the U.S. Atomic Energy Commission) began purchasing the land that became the present Savannah River Site (SRS). All residents were removed (figure A), and in 1951 the government closed the site to the public to begin work on production of nuclear weapons materials. At the time, abandoned agricultural fields dominated upland areas, and the SRS and the USDA Forest Service initiated an aggressive reforestation program.

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  • Ebook What can live in a forest? find out why the forest is a perfect habitat for animals like porcupines, bears, and deer, rabbit, bird, ants, squirrels, mice, frogs, bats, monkeys,... It is great book for children who like discover natural.

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  • Teach children to learn English is quite hard work and complex by young are not really conscious of learning as adults and most are very giddy. For children focused on lessons, teachers need teaching combined with the story of the visual image, you are invited to consult the text book "Hidden in the forest" below for additional documents for demand for learning and research.

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  • Community participation in forest management is one of the forest forms of management attracted attention at the national and local levels. in the history of Vietnam, forest communities have long existed in the community based forest. In recent years, such as forest management requirements, a number of other provinces Hoa Binh province and forest land allocation to the community (village or household ...) to manage and use long-term stability in forestry purpose. After that, the community became the owner of the CF...

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  • The science of forestry is a complex amalgamation of the biological, physical, managerial, social, and political sciences. Few, if any, forestry professionals are able to treat all aspects of forest science with complete authority. An edited book on forestry is thus the best method for conveying the science of forestry in one text.

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  • The vascular flora of the Research Forest in Yen Tu, Quang Ninh was assessed between 2005 and 2006. In the area under review, 721 species belonging to 425 genera and 154 families were identified. Among these species, these are 9 Lycopodiophyta, 34 Polypodiophyta, 8 Gymnospermae and 670 Angiospermae species (577 Dicotyledonae, 93 Monocotyledonae). The richest 3 families are Euphorbiaceae with 52 (7.2%) species, Asteraceae with 30 (4.2%) species and Moraceae with 30 (4.2%) species. The richest genus is Ficus L., (22 species) followed by Syzygium Gaertn., (8 species) and Dioscorea L.

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  • Forests play an important role in reducing erosion. In Vietnam, destroying natural forests in mountainous areas has caused serious environmental problems for sustainable development. Required forest areas for protection of soils from erosion in Vietnam are defined in this study. An algorithm of defining required forest area for soil erosion prevention is based on a comparison of soil loss prediction and its threshold of 10 ton ha-1yr-1 (soil loss tolerance) within the GIS environment. Soil loss is predicted from rainfall erosivity index, slope, porosity and...

    pdf14p dem_thanh 22-12-2012 22 3   Download

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