Essay On Amazonian Forests
he majority of the 7 million km2 of the Amazon Forest is constituted by a dry land forest ("Floresta de Terra Firme"). This is a forest that is never flooded, spread
across a great plain of up to 130-200 metres of altitude, up to the bottom of the mountains. This great plain corresponds to the sediments left by the lake "Belterra", which occupied the greatest part of the Amazon basin during the Miocene and the Pliocene, between 25 thousand and 1.8 million years ago. The silt and clay deposited in this old lake have been submitted to a gentle mass elevation movement, while the Andes rose and modern rivers began to excavate their beds. Thus the three kinds of Amazonian forests have appeared: the highland forests of the Andes, the dry land forests and the flooded river forests, both the last ones in the Brazilian Amazon.
The climatic fluctuations of the Pleistocene Age were a repeated succession of cold / dry - hot / humid - hot / dry climates. The last cold / dry phase dates......
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Approximate Word Count: 2222
Approximate Pages: 9 (250 words per double-spaced page)
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Essay On Amazonian Forests
Essay on Amazonian Forests. he majority of the 7 million km2 of the Amazon Forest
is constituted by a dry land forest ("Floresta de Terra Firme"). ...
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