Vegetation Mapping using MSN Analysis in INFORMS. INFORMS INtegrated FORest Management System MSN Most Similar Neighbor Analysis. Overview. Use MSN to create a current wall to wall vegetation layer utilizing NRIS FSVeg, DEM and Landsat data.
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INtegrated FORest Management System
Most Similar Neighbor Analysis
A project-level landscape analysis framework.
Most Similar Neighbor (MSN)
A powerful application used to impute available ground-based inventory data to non-inventoried units.
Forest Service Field-Sampled Vegetation database.
Forest Vegetation Simulator (FVS)
An individual-tree, distance-independent growth and yield model.
Calibration is the process of finding the correct combination of global and sampled data for each FVS variant.
Global Data = Data that is available for all polygons (i.e. slope, aspect, Landsat, etc.).
Sampled Data = Data that is available for sampled polygons (i.e. stand exams) or other vegetation sampling (i.e. range data, fuels plots). Examples include Basal Area, Trees per Acre, QMD, Volumes, etc.
Where MSN is calibrated by FVS Variant
Not Done Yet
Forests In Progress
Polygon shading represents maximum 30-minute burn area predicted for the next week.
By double-clicking on a polygon, current burning condition graphs will be displayed.
This is based on the actual vegetation grown to this point in time. This is based on weather and soil inputs.
2-3 years of previous daily weather variables are used to grow the plants to their current condition. This is done primarily using soil water budgets.
This is a photo taken during sampling.
Imputed stands have a photo from the reference stand associated with the record.
Click the photo link to see an sample photo of the area.
Produced with each MSN run is the MSN Report. It is a text file summarizing the key elements of the MSN run. These are the attributes in the vegetation map.
Gray = Reference (sampled) stands
Green = OK Quality (Imputed)
Red = Poor Quality (Imputed)
Yellow = Non-Veg (rocks, lakes, etc.)
Brown = Non-Forest (grass, shrubs, etc.)
NRV_MSN_FOR_USE Reference Stands
NRV_MSN_FOR_USE Imputed Stands
Red = MSN Imputed Stands
Blue = FSVeg Stand Exams
Yellow = No Data
The results from FVS and MSN are used to generate current and future vegetation layers for each decade in the simulation.
Fuel Model – Same Year
A wall-to-wall base vegetation layer is built for each decade in the simulation. This layer contains information such as basal area, stand height, qmd, canopy cover and more.
Fuels Reduction Thinning Treatment