i-Tree Urban Forest Assessment Applications
The 2014 version of i-Tree offers several urban forest assessment applications including i-Tree Eco, i-Tree Streets and i-Tree Vue. i-Tree Design and i-Tree Canopy are accessible online assessment tools.
Based on years of US Forest Service research and development, these innovative applications provide urban forest managers and advocates with tools to quantify ecosystem services and benefit values of community trees at multiple scales. The ability to articulate the significance of community trees in terms of pollution mitigation, storm water run-off reduction, carbon sequestration and storage and more has allowed i-Tree users to improve tree management, plan strategically, increase community awareness, engage decision makers and build new partnerships.
Click on the "Learn more" links to further explore the i-Tree Applications or see the new Guide to Assessing Urban Forests.
i-Tree Eco provides a broad picture of the entire
urban forest. It is designed to use field data from complete inventories or randomly
located plots throughout a community along with local hourly air pollution and meteorological
data to quantify urban forest structure, environmental effects, and values to
i-Tree Streets focuses on the
benefits provided by a municipality's street trees. It makes use of a sample
or complete inventory to quantify and put a dollar value on the street trees'
annual environmental and aesthetic benefits. Streets also describes urban
forest structure and management needs to help managers plan for the future.
i-Tree Hydro (beta)
i-Tree Hydro (beta) is a newer application
designed to simulate the effects of changes in tree and impervious
cover characteristics within a watershed on stream flow and
water quality. Recent improvements extend Hydro's applicability to non-watershed areas.
Users can select a U.S. city and simulate water flow and water quality changes qualitatively by modeling
tree and impervious cover changes.
i-Tree Vue allows you to make use of the freely available National Land
Cover Database (NLCD) satellite-based imagery to assess your community's land cover, including tree
canopy, and some of the ecosystem services provided by your current urban forest. The effects of
planting scenarios on future benefits can also be modeled. The NLCD maps are only available for
locations within the United States.
i-Tree Design is a simple online tool
that provides a platform for assessments of individual or multiple trees at the parcel level. This
tool links to Google Maps and allows you to see how tree selection, tree size, and
placement around your home effects energy use and other benefits. The Design application is available
for addresses in the United States and now Canada.
i-Tree Design Fact Sheet (pdf)
i-Tree Canopy offers a quick and easy way
to produce a statistically valid estimate of land cover types (e.g., tree cover)
using aerial images available in Google Maps. Canopy has been expanded to include calculations
of the value of the canopy in reducing air pollution and capturing atmospheric carbon. Canopy can be used by urban forest
managers to estimate tree canopy cover, set canopy goals and to monitor canopy change over time.
In addition, Canopy estimates can be used for data requirements in the i-Tree Hydro model and elsewhere
where land cover data are needed.
i-Tree System Requirements