Please see the Understanding i-Tree document for a summary of methods including those for hydrology effects. Please see the i-Tree Glossary if you need additional definitions. Note that Avoided Runoff Value refers to the monetary value of the avoided runoff ecosystem service.

This depends on the goals of your project. If both data sets represent random samples from the same area then they can be combined into a single project. The only way to combine projects is to export the tree and plot data from one project and import that data into the other project. We have a video...

The estimate of canopy cover will apply to the area you generated your random plots within. That estimate does rely on the fact that the plot selection was truly random. Any violations of that assumption will impact your results. If you are interested in accurate estimates of tree canopy cover the i...

The population data is used to estimate the relative number of people exposed to cleaner air due to trees. The population density is the value that is actually used in that calculation. Unless the population density is significantly lower near the parks you measured then there is no need to adjust t...

Hi Abby,
I didn't see your email come through to support (info@itreetools.org). You may want to try creating a packed project from the "File" menu in i-Tree Eco then send us the .zip file that is created.
Thanks,
Jason

I haven't seen that error before. Please make sure that i-Tree Eco is installed locally on your computer and not in a cloud location. Also, make sure that the .ieco file you are working with is on your local machine and not in a cloud location. If both of those conditions are met and you are still r...

Hi Abby,
You'll have to send us your project at the i-Tree support email info@itreetools.org so that we can take a look.
Thanks,
Jason

Thanks for your question. The crown size parameters are grouped together in i-Tree Eco because they all used exclusively to create the estimate of leaf surface area which drives many of the ecosystem service estimates in i-Tree. Our science development team decided that it made sense to require eith...

I haven't seen that before. We got your project at the support email and I'll have our developers take a look.
Thanks,
Jason

Hi Vincent,
That size project isn't too big and it seems like your computer should be able to handle the Forecast model run. You can send a packed copy of your project to our support email info@itreetools.org and we can take a closer look.
Thanks,
Jason

Hi, This typically happens for one of two reasons. 1. You may be using an outdated version of i-Tree Eco. Please click on the "Software Update" button under the Support tab within i-Tree Eco to ensure that you are using the latest version. 2. Your computer is running out of memory when run...

Hi Luca, i-Tree Forecast is not an individual tree model. It groups trees into cohorts by species and size. You can get the cohort level outputs as a detailed SQLite database if click on the "Browse" button and select a location for that file at the bottom of the Configuration Summary scre...

I checked in with the developers and the good news is that a select all toggle will appear in the next update we release for i-Tree Eco (v6.0.33). We are currently doing internal testing of that update and I would expect it to be released in the next month or so. That select all toggle that you see ...

This issue is on our developers to do list. It will be addressed as time an funding allows. I know that this isn't at the top their list of issues and new features as it impacts relatively few users.
Sorry for the inconvenience.
-Jason

This issue is on our developers to do list. It will be addressed as time an funding allows. I know that this isn't at the top their list of issues and new features as it impacts relatively few users.
Sorry for the inconvenience.
-Jason