Understanding i-Tree: 2021 summary of programs and methods
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General Technical Report NRS-200-2021. Madison, WI: U.S. Department of Agriculture, Forest Service, Northern Research Station. 100 p.
i-Tree is a suite of computer software tools developed through a collaborative public-private partnership. These tools are designed to assess and value the urban forest resource, understand forest risk, and develop sustainable forest management plans to improve environmental quality and human health. This report provides details about the underlying methods and calculations of these tools, as well their potential limitations. Also discussed are the history of i-Tree, its future goals, and opportunities to facilitate new science and international collaboration.
This report is a revision to one previously published in 2020 (https://doi.org/10.2737/NRS-GTR-200). It reflects updates to procedures and values.
The appendixes can be accessed through the links below.
Keywordsair pollution removal; carbon sequestration; computer modeling; economic valuation; ecosystem services; forest inventory; forest risk; urban forestry
Nowak, David J. 2021. Understanding i-Tree: 2021 summary of programs and methods. General Technical Report NRS-200-2021. Madison, WI: U.S. Department of Agriculture, Forest Service, Northern Research Station. 100 p. [plus 14 appendixes]. https://doi.org/10.2737/NRS-GTR-200-2021.