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i-Tree is a collection of urban and rural forestry analysis and benefits assessment tools. It was designed and developed by the United States Forest Service to quantify and value ecosystem services provided by trees including pollution removal, carbon sequestration, avoided carbon emissions, avoided stormwater runoff, and more. i-Tree provides baseline data so that the growth of trees can be ...
It models individual tree growth as a function of average stand characteristics. Each of the regional variants is based on FIA plots within the region. The model is designed to produce reasonable approximations of forest growth which agree with the -3/2 thinning law and a basal area maximum.
Further, the Forest Service fought fires on 2.996 million acres (12,120 km 2) of land in 2007. [15] The Forest Service organization includes ranger districts, national forests, regions, research stations and research work units and the Northeastern Area Office for State and Private Forestry. Each level has responsibility for a variety of functions.
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There are different tools available to complete these assessments. i-Tree is a set of tools cooperatively created and maintained by the USDA Forest Service and other organizations. i-Tree Eco is commonly used for bottom-up approach assessment, and uses the field data collected by the user to quantify value and benefits of the trees. [101]
Three forest stands Stand dynamics stages during succession.. A forest stand is a contiguous community of trees sufficiently uniform in composition, structure, age, size, class, distribution, spatial arrangement, condition, or location on a site of uniform quality to distinguish it from adjacent communities.
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] Tree volumes and weights are not directly measured in the field, but computed from other variables that can be measured. [3] [4]
They live primarily in trees and use their long, heavy tails for balance. Mostly nocturnal, Margays hunt in trees and eat birds, eggs, fruit, and small mammals. Female Margays produce a litter of ...