Basics
Upper Montane Zone
Upper Montane Old Growth
Outcome
Program
% (%)
VP14: 60 percent of the Upper Montane zone (between 7,000 and 8,500 feet elevation) must be in a later seral or old growth condition. The Upper Montane zone will contribute 30 percent (45,900 acres) of forested lands towards VP12.
Percent of subalpine, upper montane and montane zone stand acres that are dominated by late seral or old growth characteristics (tree size >24” dbh)
This Indicator is reported in the following LT Info areas:
Status

Estimated acres of conifer stands dominated by trees greater than 25-inches dbh (“old growth” forest stands) in Upper Montane elevation zones in the Tahoe Region. Stands in urban/developed are not included in calculations towards threshold standard attainment. Some forest types remain unclassified resulting in the N/A column. 

Name Options
Upper Montane Old Growth
General

Program Late Seral and Old Growth Forest Monitoring

Approach

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 (FIA) data to assess the extent of different vegetation types and associated forest structure characteristics for the Region (USDA, 2009; Warbington et al., 2011). For this analysis, California Wildlife Habitat Relationship (CWHR) vegetation types associated with large diameter trees were queried and enumerated from the most recently available vegetation map (U.S. Forest Service - Remote Sensing Lab Pacific Southwest Region: TMU_Strata_07 [published 2009]).

Partners

Associated Programs data not provided.