نتایج جستجو برای: forest and pastures
تعداد نتایج: 16850860 فیلتر نتایج به سال:
HE white pine weevil (Pissodes strobi (Peck)) is one of the most destructive forest insect pests in the Northeast. By causing forked and crooked boles, extreme limbihess, and weaknesses in the wood itself, it has greatly reduced the usefulness and value of the injured white pine for all the more exacting needs of the lumbe• and building trades. This has been one .of the principal factors respon...
Brazil’s Midwest is composed of four biomes: the Cerrado, predominant in region; Pantanal, largest wetland world; Amazon, which occupies part Mato Grosso; and Atlantic Forest. The objective this study was to identify evolution occupation use land rural settlements Brazilian depending on biome location. A total 54 distributed biomes region were analyzed using direct observation Landsat images fr...
Cow and calf performance was determined in a 2-yr, 2 x 2 factorial, grazing experiment using Coastal or Tifton 85 (T85) replicated Bermudagrass pastures (4 pastures each; each pasture 4.86 ha), without or with aeschynomene creep-grazing paddocks (n = 4, 0.202 ha each, planted in May of each year, 13.44 kg/ha). On June 10, 2004, and June 8, 2005, 96 winter-calving beef "tester" cows and their ca...
The wet, warm West Coast climate favours tree production and pastures. Much of the land remains in indigenous forest under the control of Government agencies. In the more accessible parts of this land, and in land held under private ownership, we explore the feasibility of “farming” two examples of native biodiversity. Sphagnum moss production varies with location and differences in mesoand mic...
Land use has generally been considered a local environmental issue, but it is becoming a force of global importance. Worldwide changes to forests, farmlands, waterways, and air are being driven by the need to provide food, fiber, water, and shelter to more than six billion people. Global croplands, pastures, plantations, and urban areas have expanded in recent decades, accompanied by large incr...
We present an inventory of the amphibians and reptiles of the San Vito de Coto Brus region, including the Las Cruces Biological Station, in southern Costa Rica, which is the result of a survey of the herpetofauna occurring in mountain forest fragments, pastures, coffee plantations, and other disturbed areas. We found 67 species, included 26 species of amphibians and of 41 of reptiles. We descri...
On 4 and 8 January 2014, at the height of the austral summer, intense wildfires in forests and dry pastures occurred in the Melipilla sector, located about 70 km to the southwest of Santiago, the Chilean capital, affecting more than 6 million inhabitants. Low level winds transported the forest fire plume towards Santiago causing a striking decrease in visibility and a marked increase in the con...
grazing management plays an important role in the continuous and economicutilization of pastures. proper grazing management is a main factor for the accumulation ofplant litter which reduces soil erosion and increase the soil permeability to keep moremoisture in the soil. in current study, the effect of three different grazing intensities (low,moderate and high) along with the grazing gradient ...
Grazing height of limpograss pastures is thought to be important in determining pasture performance and cattle weight gains, but this has not been tested under continuous grazing. The objectives of this study were to determine the effects of grazing limpograss pastures (continuous grazing) to heights of 8, 16, or 24 in during two summers and providing a non-protein nitrogen supplement to yearli...
Regrowth of tropical secondary forests following complete or nearly complete removal of forest vegetation actively stores carbon in aboveground biomass, partially counterbalancing carbon emissions from deforestation, forest degradation, burning of fossil fuels, and other anthropogenic sources. We estimate the age and spatial extent of lowland second-growth forests in the Latin American tropics ...
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