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The island of Hispaniola was first colonized by humans 6,000 years ago and the population size was likely more than one million when the European colonists first arrived in 1492. [6] Those original inhabitants used trees and caused extinctions of birds and mammals. [11] [12] Nonetheless, the greatest deforestation occurred after 1492. [8]
Pre-existing natural communities remained largely intact south of the glaciers, but saw an increase in dominance of pine and a now-extinct species of temperate spruce, (Picea critchfieldii). This area included many plant communities that rely on a lightning-based fire regime, such as the longleaf pine woodland. When the glaciers began to ...
The forest resources of the United States remained relatively constant through the 20th century. [3] The Forest Service reported total forestation as 766,000,000 acres (3,100,000 km 2) in 2012. [4] [5] [3] A 2017 study estimated 3 percent loss of forest between 1992 and 2001. [6]
The book, The Native Population of the Americas in 1492 (1976, 1992), which he edited, provided an influential estimate of the pre-Columbian population of the Americas, which he placed at between 43 and 65 million. Much of his research is concerned with how pre-1492 native peoples in the Americas modified their landscapes.
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]
This assisted in increasing the temperature within an igloo from around 2 °C (36 °F) to 10–20 °C (50–68 °F), thereby insuring a more comfortable existence for the inhabitants of the igloo from the fierce cold outside. With the addition of a kudlik the temperature could be raised even more.
The more trees that are removed equals larger effects of climate change which, in turn, results in the loss of more trees. [13] Forests cover 31% of the land area on Earth. Every year, 75,700 square kilometers (18.7 million acres) of the forest is lost. [14] There was a 12% increase in the loss of primary tropical forests from 2019 to 2020. [15]
[3] Earth offers enough room to plant an additional 0.9 billion ha of tree canopy cover. [4] Planting and protecting them would sequester 205 billion tons of carbon [4] which is about 20 years of current global carbon emissions. [5] This level of sequestration would represent about 25% of the atmosphere's current carbon pool. [4]