environmental issues of swamps and tropical rain forests

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environmental issues of swamps and tropical rain forests

Post  Gloria H. on Thu Oct 23, 2014 11:55 am

topical rainforest-
More than half of Earth’s rain forests have already been lost forever to the insatiable human demand for wood and arable land. Rain forests that once grew over 14 percent of the land on Earth now cover only about 6 percent. And if current deforestation rates continue, these critical habitats could disappear from the planet completely within the next hundred years.
The reasons for plundering rain forests are mainly economic. Wealthy nations drive demand for tropical timber, and cash-strapped governments often grant logging concessions at a fraction of the land’s true value.
threats-
• Logging interests cut down rain forest trees for timber used in flooring, furniture, and other items.
• Power plants and other industries cut and burn trees to generate electricity.
• The paper industry turns huge tracts of rain forest trees into pulp.
• The cattle industry uses slash-and-burn techniques to clear ranch land.
• Agricultural interests, particularly the soy industry, clear forests for cropland.
• Subsistence farmers slash-and-burn rain forest for firewood and to make room for crops and grazing lands.
• Mining operations clear forest to build roads and dig mines.

swamps-
• Humans changing where water naturally flows in wetlands, by doing things like building dams. This can stop enough water from getting to wetlands, which can make the wetlands dry out.
• Water pollution in wetlands. When pollutants like chemicals get into wetlands, animals and plants that live there are killed.
• Humans introducing plants and animals that don’t belong in an area. These plants and animals may kill the other plants that are meant to be there.
• Natural disasters such as fires, floods, cyclones and droughts causing harm to wetlands. These natural disasters can change the vegetation and water flow in wetlands.

Gloria H.
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