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Lightning and humans burned the understory of longleaf pine every 1 to 15 years from Archaic periods until widespread fire suppression practices were adopted in the 1930s. Burning to manage wildlife habitat did continue and was a common practice by 1950.
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.
Of all the United States, southeastern flora has been least changed in composition during the last 20,000 years. During the Last Glacial Maximum about 18,000 years ago, when the glacial front extended south to the approximate location of the Ohio River, preexisting natural
Prosopis laevigata mesquite near the Chichimeco dam, in Jesús María, Aguascalientes, Mexico. Mesquite is a common name for some plants in the genus Prosopis and Neltuma, both of which contain over 40 species of small leguminous trees. They are native to dry areas in the Americas. They have extremely long roots to seek water from very far ...
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.
Map of wood-filled areas in the United States, circa 2000 [1]. In the United States, the forest cover by state and territory is estimated from tree-attributes using the basic statistics reported by the Forest Inventory and Analysis (FIA) program of the Forest Service. [2]
Native ash species, including white ash (pictured), have been declining rapidly this century due to predation by the emerald ash borer. [1]Silvics of North America (1991), [2] [3] a forest inventory compiled and published by the United States Forest Service, includes many hardwood trees.
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.