Diversity Indices: By Stratum

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juanmijurado
Posts: 5
Joined: Wed Mar 03, 2021 5:49 am

Diversity Indices: By Stratum

Post by juanmijurado » Thu Apr 15, 2021 2:57 am

Hi all,

Is the report for the diversity indices by stratum only available for "plot sample" projects? Could it be generated for the "complete inventory" projects?

Thanks a lot,

Juanmi
Jason.Henning
i-Tree Team
Posts: 242
Joined: Fri Dec 21, 2012 7:45 am

Re: Diversity Indices: By Stratum

Post by Jason.Henning » Thu Apr 15, 2021 8:25 am

Hi Juanmi,
Unfortunately, the diversity indices can only be estimated for plot-based projects. This is because the diversity indices are density dependent. Complete inventory projects do not always have a defined area or may not measure all trees in the area of interest so there is no way to consistently estimate the density of trees for these projects. Depending on your project design you may be able to adapt the diversity metrics so that they would work for your project. Please see page 28 of this document for additional details on those calculations, https://www.fs.fed.us/nrs/pubs/gtr/gtr_nrs200.pdf. You would need to perform these calculation outside of i-Tree Eco.
Thanks,
Jason
A member of the i-Tree Team
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