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i‑Tree News
Tools for Assessing and Managing
Community Trees and Forests
In this issue:
In our ongoing effort to incorporate new science and locations into i-Tree, the upcoming release of the i-Tree 2021 suite offers several upgrades over the previous version that will affect several applications including i-Tree Eco, Design, MyTree and Planting. Below is a preview of the updates with links to learn more.

More Carbon Equations and New Wood Density Data - Eighty three carbon equations from across the globe and wood density data were added to the i-Tree database. This will produce more accurate carbon estimates based on more equations and a process of weighting wood densities between the actual species measured and the species equation used.
Find out more.

Carbon Storage and Sequestration for Tropical Locations - i-Tree Eco users conducting projects in tropical areas using Eco version 6.0.22 and newer will have the choice to receive carbon sequestration and carbon storage estimates based on equations derived specifically for tropical dry, moist, or wet areas.
Find out more.

Leaf Area, Leaf Biomass and New Shading Coefficients – We have updated the methods for leaf biomass and leaf area calculations. New shading coefficients have been added to the model. These changes will impact the benefits estimates being reported in Eco, including those in Forecast.

New Global Locations - The i-Tree User community has provided data through i-Tree Database to facilitate integration of numerous international cities throughout the world for automated processing in Eco.
Search your project location in the i-Tree Database.
Add to the i-Tree Database.

To see all the recent changes made to i-Tree Eco, please review the change log.
If you are currently working on inputting data into an i-Tree Eco project:
  • The software update will not affect your project configuration.
  • Before updating the software, retrieve all data collected using the mobile data collector, this will help ensure data is not lost

If you have submitted data and retrieved results:
  • Download all reports from current projects for archiving. This can help with understanding and communicating how the model updates affected previous estimates.
  • Document the software version these reports are from. You can find this information by opening an Eco project, going to the Support tab and click the About button.
Since i-Tree Eco is now used for underlying online tool processing, the additional carbon equations and new wood density data will affect the carbon storage and sequestration estimates produced by MyTree, Design, and Planting. Pollution removal and hydrology effects will also be impacted by the new methods for estimating leaf area, leaf biomass and new shading coefficients..

You may want to screen capture results from the current version of MyTree and download the report from Design and Planting. Documenting estimates from the current version of the online tools may help you understand and communicate how the model updates affected estimates.

Register now for the 2021 i-Tree Roundtable!

Please join us on Thursday, January 21, 2021, at 1 pm EST for the i-Tree Roundtable, our annual conversation with the i-Tree Team. This session will highlight updates to the i-Tree Eco database environment, and provide an opportunity to hear directly from our scientists and team about new improvements and future plans. This is a great chance to speak directly with the programmers, project managers and team members who are working to improve the i-Tree software suite.
i-Tree is a cooperative initiative among:
iTree Cooperative Partners - about link
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