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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]
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]
In September 2019, the Plant-for-the-Planet app was released under an open-source license. It allowed users to register planted trees or to plant trees by donating to different tree-planting organizations around the world. [24] The foundation does not take any commissions for donations made through the campaign. [25]
The goal is to have them planted "no later than December 2022". [2] [3] As of September 5, 2024, the project has raised over $24,779,606 exceeding the fundraiser's goal to plant 20 million trees. As anticipated, more than 20 million trees have been planted. [11]
Major uses of forests include timber production, recreation, hunting, fishing, watershed and fisheries protection, wildlife habitat and biodiversity protection, and gathering nontimber products such as berries, mushrooms, and medicinal plants. [1] There are boreal forests in Alaska. [4] Forests in Hawaii and the U.S. territories are tropical. [5]
New World crops are those crops, food and otherwise, that are native to the New World (mostly the Americas) and were not found in the Old World before 1492 AD. Many of these crops are now grown around the world and have often become an integral part of the cuisine of various cultures in the Old World .
Planting trees in tropical climates with wet seasons has another advantage. In such a setting, trees grow more quickly (fixing more carbon) because they can grow year-round. Trees in tropical climates have, on average, larger, brighter, and more abundant leaves than non-tropical climates.
SEMPHY has become outdated. The authors now refer users to RAxML, which is superior in accuracy and speed. A hybrid maximum-likelihood – neighbor-joining method: M. Ninio, E. Privman, T. Pupko, N. Friedman SGWE Simulation of genome-wide evolution along phylogenetic trees Simulating genome-wide sequences forward time Arenas M., Posada D ...