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During the Last Glacial Maximum about 18,000 years ago, the glacial front in the eastern United States extended south to the approximate location of the Missouri and Ohio River. These glaciers destroyed any vegetation in their path, and cooled the climate near their front.
Although the major modern community types were flourishing in the Southeast by 10,000 years BP, and the climate was similar to that today, the understory flora had not yet come to resemble modern herbaceous floras. Mixed hardwood forests dominated the majority of the upper Coastal Plains, Piedmont, and lower mountain regions. Southern pine ...
On April 10, they entered the “Chesupioc” Bay and landed alongside “faire meddowes and goodly tall trees.” [8] Finally on April 26, 1607, the London Company reached Virginia, and declared their settlement Jamestown in honor of the King. [9] Almost immediately the London Company began sending shipments of trees back to England.
The Trees of North America. For the purposes of this category, "North America" is defined in accordance with the World Geographical Scheme for Recording Plant Distributions (WGSRPD), which calls it Northern America , namely as one of the nine "botanical continents".
It has been estimated that before European settlement, forests in the United States mainland covered nearly 1 billion acres (4,000,000 km 2). [1] Since the mid-1600s, about 300 million acres (1,200,000 km 2) of forest have been cleared, primarily for agriculture during the 19th century.
For the 300 years following the arrival of Europeans, land was cleared, mostly for agriculture, at a rate that matched that of population growth. [7] During the 19th century, while the U.S. population tripled, the total area of cropland increased by over four times, from seventy-six million to three hundred nineteen million acres.
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