Rocky Mountain Landscape Simulator

Transcription

1 Rocky Mountain Landscape Simulator GIS Database Cover Age Elevation Etc. Wildlife Habitat Suitability Models Initial Condition T1 T2 T3 FRAGSTATS Analysis Disturbance Scenarios Disturbance Processes Anthro Natural Time Step (10 yrs) Successional Processes Managed Natural

2 Grid-based Spatially explicit Process-based (phenomenological) Stochastic P Model Characteristics

3 Spatial scale: Grain (anything) Extent (10,000's - 1 million ha) P Model Characteristics

4 P Model Characteristics Temporal scale: Grain (1-20 yr timestep) Extent (100's - 1,000's yrs) Old Growth Spruce-Fir Forest

5 P GIS Database Geotiff raster database Derived from any source, but typically from Forest Service GIS data, supported by systems such as NRIS, INFRA, and FACTS, or National sources such as LandFire; Does not require detailed stand inventory data! Model

6 Model P All Modules Cover Condition Condition-age Age Elevation Slope Aspect Streams Roads P Optional Layers Landscape buffer Riparian zones Disturbance zones Management zones Watersheds Compartments Timber suitability Rocky Mountain Landscape Simulator P Input Data Road proximity Ownership Roadless areas Fire polygons Relative elevation Treatment boundaries

7 Rocky Mountain Landscape Simulator P Output Data Model Cover-condition Covcond-reclass/rescale Condition Age Condition-Age Disturbance ID Disturbance susceptibility Age since disturbance (low, high, and any mortality) Disturbance frequency (low and high mortality) Management type Management priorities Treatment type Shelterwood stage Age since management Age since treatment

8 P Succession Succession transitions State-based transition rules Patch-based Branching EARLY1.ALL (A, 11001) pathways Probabilistic Conditioned on any spatial attributes Northern RM Dry-Mesic Montane Mixed Conifer Forest-Ponderosa Pine-Douglas fir >30 yrs Natural succession Disturbance-mediated succession MID1.OP (C, 32001) >70 yrs MID1.CL (B, 22001) >120 yrs >120 yrs LATE1.OP (D, 33001) >150 yrs LATE1.CL (E, 23001)

9 P Natural Disturbance Processes P Generic disturbance process that can be parameterized for a wide variety of disturbance agents, e.g.: wildfire pinyon decline pine beetle douglas-fir beetle spruce beetle spruce budworm drought

10 P Natural Disturbance Processes Climate modifier Initiation Spread Termination Mortality Disturbance transitions Missionary Ridge Fire, CO; June 2002; 20,093 ha; PP/WMC/CMC/AS/SF

11 P Natural Disturbance Processes Climate modifier: Palmer Drought Severity Index Data range from -6 (dry) to +6 (wet); based on tree ring growth data Rescaled and inverted for use in RMLANDS

12 P Natural Disturbance Processes Initiation, spread & termination: Climate modifier Susceptibility Spatial context (relative position, spread barriers) Event modifier (size constraint) Spotting Simulated Wildfire Spread

13 P Natural Disturbance Processes Initiation, spread & termination: Climate modifier Susceptibility Spatial context (relative position, spread barriers) Event modifier (size constraint) Spotting Simulated Spruce Budworm Spread

14 Mortality: Severity level (low vs high) based on percent of overstory killed Rocky Mountain Landscape Simulator P Natural Disturbance Processes

15 P Natural Disturbance Processes Disturbance transitions State-based transition rules Cell-based Branching pathways Probabilistic Conditioned on any spatial attributes EARLY1.ALL (A, 11001) Northern RM Dry-Mesic Montane Mixed Conifer Forest-Ponderosa Pine-Douglas fir >30 yrs Natural succession Disturbance-mediated succession MID1.OP (C, 32001) >70 yrs MID1.CL (B, 22001) >120 yrs >120 yrs LATE1.OP (D, 33001) >150 yrs LATE1.CL (E, 23001) Retrogression disturbance Non-state changing disturbance

16 P Vegetation Treatments P Clearcut P Shelterwood P Group cut P Thinning (overstory) P Mastication (understory) P Prescribed fire P Matrix thin & group cut P Thin & burn P Thin & masticate P Masticate & burn P Hand cut, pile & burn P Matrix thin, group cut & burn P Thin, masticate & burn P Thin, hand cut pile & burn P Clumpy P Clumpy & burn

17 P Vegetation Treatments

18 P Vegetation Treatments Initiation Spread Disturbance transitions