Search found 231 matches
- Mon Feb 22, 2021 10:23 am
- Forum: Eco/UFORE
- Topic: How does ECO extrapolate field plot data to the entire study area?
- Replies: 1
- Views: 228
Re: How does ECO extrapolate field plot data to the entire study area?
i-Tree Eco uses plot-based stratified sampling statistics. It does not rely on any remotely sensed data. In essence it calculates the values of interest per unit area from each plot (e.g. trees per acre). It then averages those values to come up with an estimate for each stratum by averaging those p...
- Fri Feb 19, 2021 3:24 pm
- Forum: Eco/UFORE
- Topic: Object ID Issue
- Replies: 2
- Views: 78
Re: Object ID Issue
Hi Lindsey, That ID field has to be controlled by i-Tree Eco because they are linked to the underlying database structure. Likely what is happening is you may have a duplicate ID or the IDs may be out of order which causes a conflict in the database and Eco subsequently renumbers the rest of the rec...
- Thu Feb 18, 2021 3:56 pm
- Forum: Canopy
- Topic: Tree Benefit Estimates
- Replies: 4
- Views: 407
Re: Tree Benefit Estimates
Hi Paul, Our development team is working on creating full methods documentation for the UK and Sweden adaptation. In the meantime I went ahead and posted a preliminary draft of a document summarizing the data sources that facilitated those expansions. You can find that on our website under the "Meth...
- Wed Feb 17, 2021 10:18 am
- Forum: Eco/UFORE
- Topic: Blanks in Datasets iTree Eco
- Replies: 2
- Views: 69
Re: Blanks in Datasets iTree Eco
Thanks for the question. Unfortunately, i-Tree Eco cannot handle partial data for some trees in a given inventory. When you turn on any of the recommended variables during project set-up you must provide all of those variables for each of your trees. When you activate only species and dbh the softwa...
- Wed Feb 17, 2021 9:39 am
- Forum: Design
- Topic: Changes in Design Numbers
- Replies: 1
- Views: 263
Re: Changes in Design Numbers
Hi Karen, Thanks for the question. It is tough to say exactly what is going on here. It could simply be that the differences in the sizes and species of the trees are enough to account those differences in results. It could also be due to changes in the underlying model. We generally try to incorpor...
- Wed Jan 27, 2021 10:21 am
- Forum: Database
- Topic: The problem about the precipitation data
- Replies: 1
- Views: 286
Re: The problem about the precipitation data
Hello, Please email your precipitation data file and the verification results to info@itreetools.org. Without your data it is difficult to diagnose the issue. It could potentially be that you are submitting the data for a leap year but using the template for a non-leap year. Thanks for your question...
- Fri Jan 22, 2021 3:09 pm
- Forum: Canopy
- Topic: Tree Benefit Estimates
- Replies: 4
- Views: 407
Re: Tree Benefit Estimates
Hi, The benefits estimate will be less reliable in Canada. The benefits are estimated by county here in the US. The benefit estimates they rely on measurements of tree leaf area in each county based on the US national forest inventory (FIA), local pollution data, local weather data, and human popula...
- Mon Oct 12, 2020 8:58 am
- Forum: Eco/UFORE
- Topic: Sample plot size distribution per stratum
- Replies: 4
- Views: 809
Re: Sample plot size distribution per stratum
Thanks for your question. The area of the stratum does not impact the appropriate number of plots. The number of plots will directly impact the sampling error of your project and if you want to minimize that sampling error you would need to place more plots in strata that have high variability. This...
- Mon Oct 12, 2020 8:47 am
- Forum: Eco/UFORE
- Topic: Plot based land cover class estimation
- Replies: 1
- Views: 242
Re: Plot based land cover class estimation
Thank you for your questions. 1. The land cover classes of a given plot should be determined in terms of percentage, according to the users guideline. However, I couldn't see any mechanism how to estimate the land cover classes at plot level during the field survey. Does it mean estimation based on ...
- Tue Sep 29, 2020 5:38 am
- Forum: Database
- Topic: Adding Weather Stations to add precipitation data
- Replies: 1
- Views: 979
Re: Adding Weather Stations to add precipitation data
Unfortunately, we cannot accept new weather station data at this time. The weather station data has very strict formatting requirements and requires information about hourly wind speed, mixing heights, and cloud cover that are not readily available from most weather stations. For more information ab...
- Tue Aug 11, 2020 12:21 pm
- Forum: Eco/UFORE
- Topic: Eco v6 crashed or stopped working
- Replies: 6
- Views: 19133
Re: Eco v6 crashed or stopped working
There is an issue with a recent automatic Microsoft update that is causing this problem. Essentially, there is an entry in the computer's registry for the 32-bit version of the MS Database Engine however the update removes or disallows the 32-bit version. This issue will be resolved in the next rele...
- Thu Jul 30, 2020 3:16 pm
- Forum: General
- Topic: Social cost of carbon
- Replies: 7
- Views: 10912
Re: Social cost of carbon
UPDATE: 7-30-20 The current cost of carbon used in i-Tree Canopy and i-Tree Eco is $170.55/ton of C and this has been updated with the 2019 PPI which was down 1.1% from 2018. We consider this to be in 2020 dollars as it is using the latest available PPI. User's can check on the latest default carbon...
- Thu Jul 09, 2020 8:44 am
- Forum: Eco/UFORE
- Topic: Significance of Crown Measurements
- Replies: 1
- Views: 783
Re: Significance of Crown Measurements
Hi Charlotte, This can be difficult to answer and varies depending on your tree population. If your trees are similar to the ones used to create the models that estimate crown parameters based on dbh then there will be little impact on average. However, for any single tree the differences may be lar...
- Tue Jul 07, 2020 12:22 pm
- Forum: General
- Topic: Trouble Uploading Data for Report
- Replies: 4
- Views: 1663
Re: Trouble Uploading Data for Report
Hi Charlotte,
Yes, please email your spreadsheet and your packed project to info@itreetools.org. You can create a packed project from the "file" menu in i-Tree Eco then send along the .zip folder that is created.
Thanks,
Jason
Yes, please email your spreadsheet and your packed project to info@itreetools.org. You can create a packed project from the "file" menu in i-Tree Eco then send along the .zip folder that is created.
Thanks,
Jason
- Mon Jul 06, 2020 12:19 pm
- Forum: General
- Topic: Trouble Uploading Data for Report
- Replies: 4
- Views: 1663
Re: Trouble Uploading Data for Report
Hi Charlotte, The limitations on the "crown: base height" are that it must be greater than 0 and less than the "crown: top height". Additionally, if you have selected to collect "crown size" parameters you must supply valid values for "top height", "base height", "width" (in both directions), and "p...