Indicator
Relative Abundance of Red Fir Forest In Seral Stages Other Than Mature
Basics
Relative Abundance of Red Fir Forest In Seral Stages Other Than Mature
Red Fir Forest
Outcome
Program
Each Unit (number)
VP8: Relative Abundance - Of the total amount of undisturbed vegetation in the Tahoe Basin: Maintain 15-25 percent of the Red Fir Forest in seral stages other than mature.
Relative proportion of yellow pine and red fir forest tree stands dominated by small diameter trees less than 10.9-inches diameter at breast height.
This Indicator is reported in the following LT Info areas:
Status

Estimated percent cover of red fir forest, displayed in light red on the chart, as tree size-class <11 inches diameter at breast height. Data is from LTBMU EcObject, a forest-wide Region 5 Remote Sensing Lab vegetation data set that incorporates Light Detection and Ranging (LiDAR) into the mapping process. It is created from a multi-resolution segmentation of LiDAR-derived tree approximate objects and a 1-m canopy height model, which were then aggregated by stand and tree-level ecologic relationships.(USDA 2017)

Data provided by the USDA Forest Service, R5 Remote Sensing Lab. Access detailed datasets on Tahoe Open Data, including, vegetation type summary, vegetation spatial data, and detailed vegetation attributes.

Name Options
Abundance Of Red Fir Forest In Seral Stages
General

Program Yellow Pine/Red Fir Abundance Monitoring

Approach

For this evaluation, stands dominated by trees less than 10.9-inches diameter at breast height (dbh) were enumerated from the following California Wildlife Habitat Relationship (CWHR) Types (CWHR, 2011) attributed in the U.S. Forest Service - Remote Sensing Lab Pacific Southwest Region TMU_Strata_07 map layer (published 2009). Every five years, the Tahoe vegetation map is updated with new satellite data (if available) and/or modeled and calibrated using field-based forest inventory and analysis data to assess the extent of different vegetation types and associated forest structure characteristics for the Region (USDA, 2009; Warbington et al., 2011).

Partners

Associated Programs data not provided.