Environmental Problems in Temperate Deciduous Forests

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Temperate deciduous forests occupy broad belts of the Northern Hemisphere (temperate evergreen forests are often analogues in the Southern Hemisphere), especially in eastern North America, Europe and Asia’s Far East. Defined by a moderate climate and trees that lose their leaves for part of the year, these ecosystems have been significantly altered by human activity.


Clear cut forest
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Many of the world’s great tracts of temperate deciduous forest have experienced significant alteration through logging, conversion to agricultural land and urban development. Recovery of woods is widespread in places like the eastern United States, but species richness is often far less than prior to extensive clearing.


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Human industry within and adjacent to temperate deciduous forests may pollute air and water resources. Water pollution, according to the World Wildlife Fund, threatens the deciduous forests of the Northeast China Plain, while the substantial ecosystems of America’s Great Smoky Mountains National Park experience air pollution from population centers well away from the park’s forests themselves.

Exotic Organisms

Fungus on tree
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Species introduced to temperate deciduous forests by humans may become invasive and threaten native ecological systems. An exotic fungal blight stemming from Asia essentially obliterated the American chestnut from eastern deciduous forests, once a dominant tree there.

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