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Multi-scale Mapping Of Fire Regime Condition Class.

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Presentation on theme: "Multi-scale Mapping Of Fire Regime Condition Class."— Presentation transcript:

1 Multi-scale Mapping Of Fire Regime Condition Class

2 Why Map? Communication Guidebook characterizes FRCC but not spatially Spatially identify restoration opportunities

3 Why Develop a Tool? Most land managers lack GIS skills Many analytical tasks are repetitive Automation saves time, money, and reduces analytical errors Consistency & repeatability

4 Mapping Tool Objectives Compare existing condition to the reference condition Derive and spatially display departure indices Spatially identify restoration opportunities Report change necessary to mimic reference condition Conduct change detection between existing condition & proposed treatment ExcessiveSimilarDeficient Relative Amount

5 FRCC Mapping Tool Model inputs Spatial Data Biophysical setting (e.g., BpS) Existing condition of successional states (e.g., veg-fuel classes) Landscapes (e.g., reporting units) Tabular Data Reference condition table Landscape to BpS crosswalk Model outputs Spatial Data Veg-Fuel Class Percent Difference Veg-Fuel Class Relative Amount Veg-Fuel Condition Class: std level Veg-Fuel Class Departure Veg-Fuel Condition Class Landscape Departure Tabular Data Landscape Reports

6 Model Inputs Data Requirements –Continuous & consistent –Any scale (geographic extent & resolution) –Capable of discriminating BpS & Veg-Fuel classes Data Sources –Remote Sensing Satellite imagery Photo interpretation –Stand exam –Field-level mapping

7 Biophysical Settings (BpS)

8 Derivation of BpS PvtHfrBpS abgr1ms1PPDF1 abgr1ms2PPDF1 abgr1nlPPDF1 abgr2ms2DFIR2 abgr2sr1GFDF abgr3ms2GFDF abla1ms2SPFI1 abla2ms2SPFI1 abla2sr1SPFI1 abla3ms2SPFI1 abla3sr1SPFI1 abla4ms3SPFI2 abla4sr1SPFI2 drygrassiiMGRA1 dryshrubiiiMSHB1 fesidaiiMGRA2 fesscaiiMGRA1 lalyms3SPFI2 mesicshrubiiiMSHB1 pialms3SPFI2 Biophysical setting (PVT) Historical Fire Regime (HFR) 75 unique combinations in R1VMP PVT HFR

9 Vegetation-Fuel Class ( Structural Stage Class) Structure –Open –Closed Seral state –Early seral –Mid seral –Late seral

10 Derivation of Veg-fuel Class PVT HFR BpS Dominance type Size class Canopy cover class BpSDomSizeCanopyVegfuel PPDF1GFBgrass/forb a PPDF1IMXS0-5 in dbhhigha PPDF1IMXS0-5 in dbhlowa PPDF1IMXS0-5 in dbhmoderatea PPDF1IMXS10-15 in dbhhighb PPDF1IMXS10-15 in dbhlowc PPDF1IMXS10-15 in dbhmoderateb PPDF1IMXS15+ in dbhhighe PPDF1IMXS15+ in dbhlowd PPDF1IMXS15+ in dbhmoderatee PPDF1IMXS5-10 in dbhhighb PPDF1IMXS5-10 in dbhlowc PPDF1IMXS5-10 in dbhmoderateb } 4,500 combinations in R1VMP

11 Derivation of Veg-fuel Class - R1VMP SizeCanopy CoverVeg-fuel Class 0-5 in dbhallA – early seral 5-10 in dbh 10-15 in dbh high (>60%)B – mid-seral; closed 5-10 in dbh 10-15 in dbh low (10-25%) moderate (25-60%) C – mid-seral; open >15 in dbh low (10-25%) moderate (25-60%) D – late-seral; open >15 in dbhhigh (>60%)E – late-seral; closed **Except where PVT = PICO, PIFL, PIPO, PSME1

12 Landscapes Geographic units for deriving composition of veg-fuel classes for any given BpS Nested hierarchy; up to 3 levels Vary by BpS/Fire regime group HUC6HUC5 HUC4 HFR I and IIHFR IIIHFR IV and V

13 Landscapes (Reporting Units) Geographic units for deriving composition of veg-fuel classes for any given BpS Nested hierarchy; up to 3 levels Vary by BpS/Fire regime group HUC6HUC5HUC4 HFR I and II HFR III HFR IV and V

14 Reference Condition (HRV) Potential Natural Vegetation (BpS) Vegetation-fuel Class Composition Fire Regime Landscape Hierarchy CodeNameABCDE AAOWAlder-Ash (Oregon, Washington)22523221IV3 CAMECalifornia Mixed Evergreen1030152025I1 CHDFCedar-Hemlock_Douglas-fir10355545V3 CHPICedar-Hemock-Pine (Washington)15491530IV3 DFIR1Douglas-fir Interior Pacific Northwest10 204515I1 DFIR2Douglas-fir Interior Rocky Mountains1525202515III2 FHWO1Fir-Hemlock (Washington, Oregon), Forest152551045V3 GFDFGrand Fir-Douglas fir154510525III2 LPSCLodgepole pine-Subalpine CA201030 10III2 MCANSouthwestern Mixed Conifer10520605I1 Midpoint of HRV for veg-fuel classes Derived from VDDT Includes landscape hierarchy

15 Veg-Fuel Class Percent Difference The difference between existing veg-fuel class composition and the reference condition Indicates the veg-fuel classes that are most deficient to most excessive Most informative of all the indices Values: -100 to 100 Negative = too little; Positive = too much

16 Veg-Fuel Class Relative Amount Classification of the Percent Difference (lose information) Identifies excessive and deficient amounts of veg-fuel classes Suggests management scenarios –Maintain veg-class (similar) –Recruit veg-class (deficient) –Reduce veg-class (excessive) Trace Under RepresentSimilarOver Represent Abundant

17 Veg-Fuel Condition Class: Stand Level Classification of relative abundance Suggest management scenarios: –CC1 = maintain/recruit –CC2 = reduce –CC3 = reduce Useful for NFPORS reporting Percent Difference (%) Relative Abundance Std-level FRCC <25 Similar, Under Represented, Trace 1 25 to 75Over Represented2 >75Abundant3

18 Veg-Fuel Class Departure Signifies the overall departure across all vegetation-fuel classes within a BpS Values = 0 to 100 Useful for prioritizing BpSs for restoration

19 Veg-Fuel Condition Class (BpS-level) Classification of Veg-Fuel departure Stratified by BpS & landscape Represents the vegetation component of FRCC Vegetation-Fuel Departure (%) Vegetation-Fuel Condition Class <341 34 to 662 >663

20 Landscape Departure Area-weighted average of Veg- Fuel departure at lowest level of the landscape hierarchy Useful for prioritizing landscapes Values range between 0 and 100

21 Reports How much change is necessary to mimic the reference condition? What Veg-Fuel Classes need to be treated? Unique by landscape level

22 Where are we?? Completed 1 st round of beta-testing –Gila –Northern Region –Klamath Testing change detection Editing User Manual Release beta version in March

23 All models are wrong… …but some are useful. George E. P. Box

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