Xem 1-15 trên 15 kết quả Mangrove forests
  • 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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  • 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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  • The Mekong River Delta in Vietnam can be considered as a large tropical wetland, in which two typical eco-forest wetlands can be distinguished: the inland Melaleuca forest wetlands and the coastal mangrove forest wetlands. Their main functions are the provision of forest commodities, the regulation of the water balance and biodiversity conservation. However as elsewhere under human pressure their existence is under the threat of forest fires and deforestation. Their protection requires the implementation of a multi-level national or sub-national planning policy.

    pdf0p haivan 16-03-2009 128 19   Download

  • Due to demands placed on natural resources globally and subsequent deterioration of the environment, there is a need to source and develop appropriate technology to satisfy this requirement. For decades mankind has largely depended on natural resources such as fossil fuels to meet the ever increasing energy demands. Realizing the finite nature of these resources, emphasis is now shifting to investigating alternate energy source governed by environmentally friendly principles.

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  • This Minor Field Study (MFS) was performed by Teresia Lindberg and Anna Nylander, who are both studying Eco-toxicology at Uppsala University in Sweden. The report is a Master´s thesis for Teresia Lindberg. The Swedish International Development Agency (Sida) finances a number of so-called Minor Field Studies for students or young people to carry out a research project in a developing country. The study usually takes place in one of Sida´s target countries and is part of a local Sida-sponsored aid programme.

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  • The last decade has contributed significantly to the development of research on the biogeochemistry of tropical mangrove ecosystems. Also obvious during the last decade is the continued and dramatic destruction of natural tropical mangrove resources in Southeast Asia (Fig. 1.1). The naturally high productivity of tropi- cal mangroves has traditionally been exploited for a wide variety of purposes, both as sources of forestry or fisheries products and they have also been used for human settlement (Hatcher et al., 1989; Platong, 1998).

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  • Rừng ngập mặn (MNC) của huyện Hậu Lộc đã xảy ra cho các lứa tuổi. Khu vực này Thời gian một số WS rừng lên đến hàng trăm mẫu Anh, và phân phối trong lò nướng thông thường của Xuân Lộc Hải Lộc, Lộc Hòa, và Đa Lộc. Tuy nhiên, Theo khai thác quá mức, đặc biệt là từ dưới chuyển đổi của rừng ngập mặn và tôm vào trang trại cua đã xảy ra ở Xuân Lộc, Hòa Lộc và Lộc Hải, diện tích rừng ngập mặn huyện ĐÃ giảm đáng kể.

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  • In Mekong delta, mangrove forest distributes along the coastline of 700 km and it is a homeland for mud crab in tropical areas. The mud crab becomes potential to be alternative species from failed shrimp farming. Particularly, mud crab hatchery has been introduced and operated recently at Bac lieu, Tra vinh, Soc Trang, Ben Tre, Kien giang and Ca mau provinces. However, the survival from zoea stage to crablet stage 1 is low at approximately 5%. In addition, like shrimp rearing, the mud crab hatchery is using antibiotic as major treatment to prevent bacteria and fungi.

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  • Mô tả ba loài tuyến trùng biển sống tự do thuộc bộ Monhysterida tại rừng ngập mặn ở cửa sông Mê Công, Việt Nam. Loài mới Daptonema brevisetoum sp.nov. về hình thái học tương đối giống loài Daptonema setosum (Butschli, 1874) song khác biệt với loài trên bởi có các lông cứng vòng ngoài cùng trên đầu ngắn hơn (15% so với 50-70% chiều rộng vùng mô ở D. setosum), gai sinh dục cũng ngắn hơn (49Mm so với 61-64 Mm ở loài D.

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  • The young alluvial soils show little profile development although they are sometimes stratified. With the exception of about 800 ha of sand to loamy sand soils in one area, textures vary from sandy loam to uniform clay, with the finer textures tending to occur toward the mangrove and in the flood-prone area between the Meme and Mokoko Rivers. Although there is evidence of flooding and seasonal waterlogging from several other rivers that traverse the plain, these soils rarely show evidence of strongly reducing conditions within 1.5 m of the surface.

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  • Global warming and changes in climate have already had observed impacts on natural ecosystems and species. Natural systems such as wetlands, mangroves, coral reefs, cloud forests, Arctic and high latitude ecosystems are especially vulnerable to climate‐induced disturbances. Enhanced protection and management of biological resources and habitats can mitigate impacts and contribute to solutions as nations and communities strive to adapt to climate change. Biodiversity is the foundation and mainstay of agriculture, forests, and fisheries.

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  • Centre for Applied Research in Remote Sensing and GIS, College of Science, VNU 2 Norwegian Mapping Authority, Norway. 3 University of Social and Human Sciences of Ho Chi Minh City 4 Earth Remote Sensing Data Analysis Centre, Tokyo, Japan. 5 VTGEO, Institute of Geology, Vietnam Academy of Science and Technology ABSTRACT. The Mekong Delta in the south of Vietnam is a highly dynamic landscape with rapid changes in land use. Costal forests of mangrove (Rhizophoraceae, Sonneratiaceae and Avicenniaceae) and the more inland Melaleuca forests are changed into shrimp ponds and rice fields.

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  • The proposed Camdev II I developments are in the Boa Plain which occupies 177 km2 in the Bamusso Sub-division of Ndian Division of South West Province. It is a flat crescent-shaped coastal plain north-west of Cameroon Mountain. To the west are mangrove swamps, to the east mainly the hills of the Mokoko River Forest Reserve. In the north the Meme River is the boundary and the crescent narrows to a point in the south near the village of Njangassa. There is a general downward slope of about 0.5% toward the mangrove swamps in the west. It is estimated that 90%...

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  • Forests cover about 30 percent of total land area, but they store about 50 percent of the Earth’s terrestrial carbon (1,150 GtC) in plant biomass, litter and debris, or in the soil. About 20 percent of total GHG emissions are caused by deforestation and land use changes but in tropical regions emissions attributable to land clearance are much higher, up to 40 percent of national totals. Reducing deforestation and degradation (REDD) is the forest mitigation option with the largest potential for maintaining carbon stocks in standing forests over the short term.

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  • In response to climate change, many countries are likely to invest in even more infrastructure for coastal defenses and flood control to reduce the vulnerability of human settlements to climate change. Increased water shortages will increase demand for new irrigation facilities and new reservoirs. Similarly, natural ecosystems can reduce vulnerability to natural hazards and extreme climatic events and complement, or substitute for, more expensive infrastructure investments to protect coastal and riverine settlements.

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