نتایج جستجو برای: plantation forest
تعداد نتایج: 111345 فیلتر نتایج به سال:
The aim of this study was to investigate vegetation composition in broadleaved and conifers plantations in 220 ha of Loblloly pine (Pinus taeda), alder (Alnus glutinosa( and poplar (Popolus deltoides) hardwood plantations and its comparison with natural forests in Bibiyanlu protected forest park, Astara. A total of 60 sampling plots of 1000 m2 were taken using randomly-systematic method with1...
Intensive land expansion of commercial oil palm agricultural lands results in reducing the size of peat swamp forests, particularly in Southeast Asia. The effect of this land conversion on macrofungal biodiversity is, however, understudied. We quantified macrofungal biodiversity by identifying mushroom sporocarps throughout four different habitats; logged peat swamp forest, large-scale oil palm...
Several factors contribute to the extinction of populations in fragmented habitat but key ones include habitat loss and disruptions to connectivity. Aspects of the ecology of greater gliders (Petauroides volans), along with observations of their response to native forest clearance at a site in southeastern Australia, lead to the prediction in the 1960s that the species would not persist in the ...
Timberlands in Mississippi are owned by a diverse group of landowners: industrial owners, timberland investment management organizations (TIMOs), non-industrial private forest (NIPF) landowners, and public landowners. The objectives of each type vary, resulting in different management of their properties. This variation influences the intensity of their management and harvest decisions, which i...
China's forests are characterized by young age, low carbon (C) density and a large plantation area, implying a high potential for increasing C sinks in the future. Using data of provincial forest area and biomass C density from China's forest inventories between 1994 and 2008 and the planned forest coverage of the country by 2050, we developed a stage-classified matrix model to predict biomass ...
Javanese teak forest constitutes more than 35% of world teak forests. It provides employment and livelihood to millions of people. This paper describes the use of systems dynamics to mimic the value chain of teak from forest to final furniture market using phases of conceptual design, model specification, model evaluation and model uses. The model comprises Perhutani plantation teak, community ...
This case study reviews the Brazilian experience since the mid-1990s with certification of natural and plantation forests at corporate and community levels. Discriminating world markets, corporate social responsibility, and image concerns stimulated certification by the plantation segment. Initial certifications were carried out according to FSC standards, using criteria adopted by a national t...
Tropical timber plantations provide a variety of environmental services, including recovery of biodiversity on degraded lands. For example, plantations can speed forest successional processes by improving microsite conditions and attracting seed dispersers, thus promoting woody regeneration. Timber species have been hypothesized to differ in understory recruitment success. In the present resear...
The 21”’ century continues a trend of rapid growth in both international trade of forest products and a concern for forests. These two trends are connected. Forces causing trade growth are linked to the loss of native forest resources in some countries and the accumulation of nonnative forest resources in other countries. Factors increasing trade include relaxation of trade barriers, income gro...
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