resource and environmental issues. example of environmental issues deforestation environmental...
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Resource and environmental issues
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Example of Environmental issues Deforestation Environmental Impacts of Mining Global Warming “Tragedy of the commons”—overfishing a
nd other
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Deforestation
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Jungle burned for agriculture in southern Mexico
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Logging in Malaysia.
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Environmental impacts caused by deforestation Burning forests and decay of wood after
logging contribute to the release of greenhouse gases
Loss of biodiversity Forests are important parts of hydrologic
cycle in nature
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Mining
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Chuquicamata, the largest open pit copper mine in the world, Chile
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Iron hydroxide precipitate stains a stream receiving acid drainage from surface coal mining.
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Environmental impacts of mining Land/soil erosion Formation of sinkholes, Loss of biodiversity in the area Contamination of groundwaters by chemic
als from the mining process and products. Abandoned mines can still pose safety haza
rds such as deadly gases
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Chemicals used for mining Sodium cyanide for extraction of gold Sulphuric acid for extraction of copper fro
m copper oxides If these chemicals are not handled properly,
serious environmental impacts may occur to the neighbouring environment
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Global Warming
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Environmental Effects ofGlobal Warming Melting of permafrost and polar ice Rising sea level Spread of pests and disease Ecological impacts (e.g. disturbed life
cycle of flora-fauna)
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This image is of the Easton Glacier on Mount Baker in the North Cascades of Washington taken in 2003. It shows the terminus position of the glacier in 1985 as well.
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“Tragedy of the Commons” Free access and unrestricted demand for a finite resour
ce ultimately dooms the resource through over-exploitation.
Release of carbon dioxide into the atmosphere is one example. As everyone can release carbon dioxide into the atmosphere with little personal consequence, people tends to care very little about limiting its emission.
Overfishing in the open sea is another example. If everyone with a fishing boat can fish as much as they like, they will eventually drive the fish stock to commercially extinct.
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State of Global Fisheries The FAO State of World Fisheries and
Aquaculture 2004 report estimates that in 2003, of the main fish stocks or groups of resources for which assessment information is available, "approximately one-quarter were overexploited, depleted or recovering from depletion… and needed rebuilding.“
edible fish are endangered in 14 of the world's 16 major fishing areas
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This is another example
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If anyone can throw charms onto the wishing tree (a shared resource) without caring the consequence, the tree will eventually collapse.
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Any solution? Some suggested that overexploitation of a r
esource can be solved by proper management of the property right to use the resource.
Licensing and tradeable quota are some possible financial instruments.
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Question If there is another wishing tree, how should
it be managed?