Pacific Northwest Cooperative Ecosystem Studies Unit (CESU)

Combining Landsat and LiDAR Remote Sensing Data to Refine Fire Management Objectives for Forest Structural Heterogeneity in Yosemite National Park

Project ID: J8W07100018

Federal Agency: National Park Service

Partner Institution: University of Washington

Fiscal Year: 2010

Initial Funding: $68,150

Total Funding: $68,150

Project Type: Technical Assistance

Project Disciplines: Biological

National Park: Yosemite National Park

Principal Investigator: Lutz, Jim

Agreement Technical Representative: Smith, Gus

Abstract: This is a collaborative project to use two types of remotely sensed data and field data to determine whether fire management projects and managed wildfires meet the Fire Management Plan objectives for forest “canopy gaps” in Yosemite National Park (YOSE). LiDAR data will be acquired for a 92 km2 study in YOSE to determine the structural heterogeneity of different forest types in the study area. Forest heterogeneity is the vertical and horizontal distribution of plant biomass that is shaped by fire regime, change in fire regimes, time since fire, and other factors such as land use, disease, and drought. The LiDAR data will present a three dimensional “picture” of the forest as seen from above. Once the LiDAR data are acquired and analyzed, this information will be combined with other remote sensing data (e.g., Landsat) and geospatial data of previous fires to determine how fires impact forest heterogeneity by forest type. Other factors, including time since fire and fire severity, will be analyzed to determine the impact of fire severity on forest structure and how time influences forest succession in terms of structure. Lastly, animal movement patterns derived from other studies conducted on sensitive species such as California spotted owls, northern flying squirrels, and fishers will be analyzed to determine how forest structural heterogeneity influences spatial use by vertebrates.

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