نتایج جستجو برای: forest degradation
تعداد نتایج: 254568 فیلتر نتایج به سال:
To investigate the dynamics and relative drivers of cellulose degradation during litter decomposition, a field experiment was conducted in three individual ecosystems (i.e., forest floor, stream, and riparian zone) of an alpine forest meta-ecosystem on the eastern Tibetan Plateau. Four litter species (i.e., willow: Salix paraplesia, azalea: Rhododendron lapponicum, cypress: Sabina saltuaria, an...
The Cacheu Mangroves Natural Park (PNTC) was established in the year 2000 with the objective of protecting the coastal forests of Northern Guinea-Bissau, which have been subject to deforestation and are at risk. Concomitantly, the need to find sustainable financial revenues to support forest conservation motivated the development of projects that explore avoidance of deforestation and forest de...
Cutting tools are widely used in manufacturing processes and drilling is the most commonly used machining process. Although drill-bits used in drilling may not be expensive, their breakage can cause damage to expensive work piece being drilled and at the same time has major impact on productivity. Predicting drill-bit breakage, therefore, is important in reducing cost and improving productivity...
In an effort to discover anaerobic bacteria capable of lignin degradation, we isolated "Enterobacter lignolyticus" SCF1 on minimal media with alkali lignin as the sole source of carbon. This organism was isolated anaerobically from tropical forest soils collected from the Short Cloud Forest site in the El Yunque National Forest in Puerto Rico, USA, part of the Luquillo Long-Term Ecological Rese...
Recognition of the importance of forests for local livelihoods, biodiversity and the climate system has spurred a growing interest in understanding the factors that drive forest-cover change. Forest transitions, the change from net deforestation to net reforestation, may follow different pathways depending on a complex interplay of driving forces. However, most studies on forest transitions foc...
Restoring forest landscapes is critical in the face of continued global forest loss and degradation. In this article, we explore some challenges underlying the delivery of global commitments to restore forest landscapes. We propose that three fundamental questions need to be resolved upfront for the effective implementation of Forest Landscape Restoration and related commitments: (1) What socia...
Forest loss and degradation remains a leading environmental problem. The long history of sustainable forest management has often failed to meet expectations—constrained by funding, governance, capacity and competing interests. Initiatives from the climate change policy arena are opening new ways for a broader mainstreaming of forest management, specially through foreign aid mechanisms towards R...
land cover change constitutes one of main way of alteration of soil organic matter in both quantitative and qualitative terms. the goal of this study was to compare the carbon stock and the isotopic signature of the organic matter in the soil of areas with different land use, covered with forest and grass (pasture). the study area is located at sorocaba, sp, brazil. using un-deformed soil sampl...
Forests in Mongolia have been severely degraded by forest fi re and exploitive logging. This study investigated changes in vegetation and soil properties after forest fi re or clearfelling. Microclimate conditions such as temperature and relative humidity (RH) changed drastically after forest fi re or logging; temperature increased 1.6-1.7 oC on average, whereas RH decreased up to 15.7 percent ...
The concept of forest resource extraction versus conservation has been a relevant topic discussion at present. Anthropogenic activities have direct and indirect impacts on ecosystem. These varies with the extend human interaction as well culture those people rely forests. term “forest-dependent people” refer to who utilise benefits It includes indigenous communities living legally within forest...
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