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Deforestation In British Columbia
The deforestation in British Columbia has occurred at a heavy rate during periods of the past, but with new sustainable efforts and programs the rate of deforestation is decreasing in the province. In British Columbia, forests cover over 55 million hectares, which is 57.9% of British Columbia's 95 million hectares of land. The forests are mainly composed (over 80%) of coniferous trees, such as pines, spruces and firs. Environmental Issues Deforestation has negative impacts on British Columbia's environment and diversity even though it is necessary for population expansion and benefits for the Canadian economy. Carbon emissions and greenhouse gases Carbon emissions from deforestation is an important issue to look at with the increasing problem of global warming. Currently, about 4% of B.C.′s total green house gas (GHG) yearly emissions are from deforestation, which is quite a low percentage compared to B.C.'s total GHG emissions, and works out to be about 6,200 hectares of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evans Peak Cropped
Evans may refer to: People *Evans (surname) * List of people with surname Evans Places United States * Evans Island, an island of Alaska * Evans, Colorado * Evans, Georgia * Evans County, Georgia * Evans, New York *Evans Mills, New York *Evans City, Pennsylvania * Evans, West Virginia Elsewhere * Évans, in France *Cape Evans, in Antarctica Creeks * Evans Creek (Peters Creek), a tributary of Peters Creek in California *Evans Creek (Tuscarawas River), a stream in Ohio * Evans Creek (Devils River), a stream in Texas Businesses and organizations * Robert B. Evans, founder of Evans Industries *Evans (retailer), of the United Kingdom *Evans Cycles, a United Kingdom bicycle retailer *Bob Evans Restaurants, a chain operated by Bob Evans Farms, Inc. of the United States *H. C. Evans, a defunct manufacturer of casino, amusement park and fairground equipment in the United States *D'Addario (manufacturer), a drumhead manufacturer also known as "Evans" Transportation * Evans station ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boreal Forest Of Canada
Boreal may refer to: Climatology and geography *Boreal (age), the first climatic phase of the Blytt-Sernander sequence of northern Europe, during the Holocene epoch *Boreal climate, a climate characterized by long winters and short, cool to mild summers * Boreal ecosystem, an ecosystem with a subarctic climate in the Northern Hemisphere * Boreal forest, a biome characterized by coniferous forests * Boreal Sea, a Mesozoic-era seaway Companies and organizations *Boreale, a Quebec microbrewery * Boreal Mountain Resort, a ski resort in the Lake Tahoe area of California *Boreal Norge, a Norwegian public transport operator * Collège Boréal, a francophone college in Ontario, Canada Other uses * Boreal (horse), a racehorse * Carlo Boreal, a fictional character in Philip Pullman's ''His Dark Materials'' trilogy *'' Le Boreal'', a French cruise ship * Borealism, the exoticisation of the northern regions of the Earth and their cultures See also * Boreal forest of Canada, a region cove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sustainable Development
Sustainable development is an organizing principle for meeting human development goals while also sustaining the ability of natural systems to provide the natural resources and ecosystem services on which the economy and society depend. The desired result is a state of society where living conditions and resources are used to continue to meet human needs without undermining the integrity and stability of the natural system. Sustainable development was defined in the 1987 Brundtland Report as "Development that meets the needs of the present generation without compromising the ability of future generations to meet their own needs".United Nations General Assembly (1987''Report of the World Commission on Environment and Development: Our Common Future'' Transmitted to the General Assembly as an Annex to document A/42/427 – Development and International Co-operation: Environment. As the concept of sustainable development developed, it has shifted its focus more towards the econom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precautionary Principle
The precautionary principle (or precautionary approach) is a broad epistemological, philosophical and legal approach to innovations with potential for causing harm when extensive scientific knowledge on the matter is lacking. It emphasizes caution, pausing and review before leaping into new innovations that may prove disastrous. Critics argue that it is vague, self-cancelling, unscientific and an obstacle to progress. In an engineering context, the precautionary principle manifests itself as the factor of safety, discussed in detail in the monograph of Elishakoff. It was apparently suggested, in civil engineering, by Belindorde Bélidor, Bernard Forest, La science des ingénieurs, dans la conduite des travaux de fortification et d'architecture civile, Paris: Chez Claude Jombert 1729 in 1729. Interrelation between safety factor and reliability is extensively studied by engineers and philosophers. The principle is often used by policy makers in situations where there is the poss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prescribed Burning
A controlled or prescribed burn, also known as hazard reduction burning, backfire, swailing, or a burn-off, is a fire set intentionally for purposes of forest management, farming, prairie restoration or greenhouse gas abatement. A controlled burn may also refer to the intentional burning of slash and fuels through burn piles. Fire is a natural part of both forest and grassland ecology and controlled fire can be a tool for foresters. Hazard reduction or controlled burning is conducted during the cooler months to reduce fuel buildup and decrease the likelihood of serious hotter fires. Controlled burning stimulates the germination of some desirable forest trees, and reveals soil mineral layers which increases seedling vitality, thus renewing the forest. Some cones, such as those of lodgepole pine and sequoia, are pyriscent, as well as many chaparral shrubs, meaning they require heat from fire to open cones to disperse seeds. In industrialized countries, controlled burning ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larva
A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle. The larva's appearance is generally very different from the adult form (''e.g.'' caterpillars and butterflies) including different unique structures and organs that do not occur in the adult form. Their diet may also be considerably different. Larvae are frequently adapted to different environments than adults. For example, some larvae such as tadpoles live almost exclusively in aquatic environments, but can live outside water as adult frogs. By living in a distinct environment, larvae may be given shelter from predators and reduce competition for resources with the adult population. Animals in the larval stage will consume food to fuel their transition into the adult form. In some organisms like polychaetes and barnacles, adults are im ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Climate Change
In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to Earth's climate. The current rise in global average temperature is more rapid than previous changes, and is primarily caused by humans burning fossil fuels. Fossil fuel use, deforestation, and some agricultural and industrial practices increase greenhouse gases, notably carbon dioxide and methane. Greenhouse gases absorb some of the heat that the Earth radiates after it warms from sunlight. Larger amounts of these gases trap more heat in Earth's lower atmosphere, causing global warming. Due to climate change, deserts are expanding, while heat waves and wildfires are becoming more common. Increased warming in the Arctic has contributed to melting permafrost, glacial retreat and sea ice loss. Higher temperatures are also causin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spruce Budworm
''Choristoneura'' is a genus of moths in the family Tortricidae. Several species are serious pests of conifers, such as spruce and are known as spruce budworms. Species *'' Choristoneura adumbratanus'' (Walsingham, 1900) *''Choristoneura africana'' Razowski, 2002 *'' Choristoneura albaniana'' (Walker, 1863) *''Choristoneura argentifasciata'' Heppner, 1989 *''Choristoneura biennis'' Freeman, 1967 *''Choristoneura bracatana'' (Rebel, in Rebel & Rogenhofer, 1894) *'' Choristoneura carnana'' (Barnes & Busck, 1920) *''Choristoneura chapana'' Razowski, 2008 *''Choristoneura colyma'' Razowski, 2006 *'' Choristoneura conflictana'' (Walker, 1863) *''Choristoneura diversana'' (Hubner, 814-1817 *'' Choristoneura evanidana'' (Kennel, 1901) *''Choristoneura expansiva'' X.P.Wang & G.J.Yang, 2008 *''Choristoneura ferrugininotata'' Obraztsov, 1968 *'' Choristoneura fractivittana'' (Clemens, 1865) *'' Choristoneura freemani'' Razowski, 2008, western spruce budworm *''Choristoneura fumiferana'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Pine Beetle
The mountain pine beetle (''Dendroctonus ponderosae'') is a species of bark beetle native to the forests of western North America from Mexico to central British Columbia. It has a hard black exoskeleton, and measures approximately , about the size of a grain of rice. In western North America, a recent outbreak of the mountain pine beetle and its microbial associates has affected wide areas of lodgepole pine forest, including more than of forest in British Columbia. The outbreak in the Rocky Mountain National Park in Colorado began in 1996 and has caused the destruction of millions of acres/hectares of ponderosa and lodgepole pine trees. At the peak of the outbreak in 2009, over were affected. The outbreak then declined due to better environmental conditions and the fact that many vulnerable trees had been already destroyed. Mountain pine beetles inhabit ponderosa, whitebark, lodgepole, Scots, jack, limber, Rocky Mountain bristlecone, and Great Basin bristlecone pine tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invasive Species
An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species adversely affect habitats and bioregions, causing ecological, environmental, and/or economic damage. The term can also be used for native species that become harmful to their native environment after human alterations to its food webfor example the purple sea urchin ('' Strongylocentrotus purpuratus'') which has decimated kelp forests along the northern California coast due to overharvesting of its natural predator, the California sea otter ('' Enhydra lutris''). Since the 20th century, invasive species have become a serious economic, social, and environmental threat. Invasion of long-established ecosystems by organisms is a natural phenomenon, but human-facilitated introductions have greatly increased the rate, scale, and geographic range ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protected Area
Protected areas or conservation areas are locations which receive protection because of their recognized natural, ecological or cultural values. There are several kinds of protected areas, which vary by level of protection depending on the enabling laws of each country or the regulations of the international organizations involved. Generally speaking though, protected areas are understood to be those in which human presence or at least the exploitation of natural resources (e.g. firewood, non-timber forest products, water, ...) is limited. The term "protected area" also includes marine protected areas, the boundaries of which will include some area of ocean, and transboundary protected areas that overlap multiple countries which remove the borders inside the area for conservation and economic purposes. There are over 161,000 protected areas in the world (as of October 2010) with more added daily, representing between 10 and 15 percent of the world's land surface area. As of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gordon River Clearcut
Gordon may refer to: People * Gordon (given name), a masculine given name, including list of persons and fictional characters * Gordon (surname), the surname * Gordon (slave), escaped to a Union Army camp during the U.S. Civil War * Clan Gordon, aka the House of Gordon, a Scottish clan Education * Gordon State College, a public college in Barnesville, Georgia * Gordon College (Massachusetts), a Christian college in Wenham, Massachusetts * Gordon College (Pakistan), a Christian college in Rawalpindi, Pakistan * Gordon College (Philippines), a public university in Subic, Zambales * Gordon College of Education, a public college in Haifa, Israel Places Australia *Gordon, Australian Capital Territory *Gordon, New South Wales * Gordon, South Australia *Gordon, Victoria * Gordon River, Tasmania * Gordon River (Western Australia) Canada * Gordon Parish, New Brunswick * Gordon/Barrie Island, municipality in Ontario *Gordon River (Chochocouane River), a river in Quebec Scotland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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