Vegetation Classification and Mapping Project Report - USGS

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Base Map Class Development overlay as the work area for the photo. Fiducial marks (representing a fixed basis of reference) were transferred to each transparent polyester sheet, along with the park code and photo number. A stereoscope was used to help distinquish topographic features with elevational differences and details of photo signatures. Each photo of the northern section and every other photo of the southern section was interpreted, and every other photo of the southern section. This decision was based on the preferences of each photointerpreter after ensuring that joining the northern and southern sets of transparent polyester sheets would not create problems in the final map. The ground reference data for photointerpretation was supplied by the field reconnaissance observations, classification relevés, and the 1996 sampling data. Cully and McTeague developed a list of provisional base map classes that represented the plant communities as seen in the aerial photography. They labeled the polygons using known and interpreted relationships among the photo signatures, the ground reference data, and the provisional base map classes. Adjustments were made to the provisional base map classes and to the plant community classification during this phase of the project. Adjustments consisted of ● adding map classes to the land use classification, based on observations during field reconnaissance ● including unique stands of plant communities into existing map classes ● expanding provisional map class concepts to include field observed plant communities Cully and McTeague identified each delineated map class with a numeric code referencing its provisional map class assignment and any modifiers applicable to the polygon. The modifiers, developed in coordination with the Northern Figure 8. Location of photointerpreters’ observation points at Petrified Forest National Park. Colorado Plateau Network (NCPN), indicated vegetation density (in percentage categories), pattern, and height (table 6) and were applied to the uppermost stratum of each plant community. The height modifier described the average height of the plant community represented by the polygon. A modifier was also used to describe the environmental condition surrounding the vegetation. Cully 25
Vegetation Classification and Distribution Mapping Report: Petrified Forest National Park Table 6. Modifiers applied to map classes to further characterize the vegetation of each map unit.. Modifier Modifier code Interpretation Density A Open Vegetation/Discontinuous (25-60% cover) B Dispersed Vegetation (10-25% cover) C Sparse Vegetation (2-10% cover) D Barren (
Page 1 and 2: National Park Service U.S. Departme
Page 3 and 4: Vegetation Classification and Distr
Page 5 and 6: The National Park Service, Natural
Page 10 and 11: Acronyms and Abbreviations AA ac AP
Page 12 and 13: Executive Summary The classificatio
Page 14: Acknowledgments Behind the authors
Page 31 and 32: Axis 3 Axis 2 Vegetation Classifica
Page 35 and 36: 20 Table 5. continued Plant communi
Page 39: Vegetation Classification and Distr
Page 55 and 56: 40 Table 13. Base map class summary
Page 61 and 62: 46 Table 16. Summary statistics for
Page 71 and 72: 56 Table 22. Summary statistics for
Page 75 and 76: Literature Cited ties: Terrestrial
Page 89 and 90: B2 Appendix B Plant Community 2003
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B4 Appendix B .continued Plant Comm
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Vegetation Classification and Distr
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Appendix C: Global and local plant
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Appendix C: Global and Local Plant
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Appendix D Plant species list The s
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D3 Appendix D continued Scientific
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Appendix E Plant community and map
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Appendix E: Plant community and map
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Appendix F Plant community and map
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F3 Appendix F continued Plant commu
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Appendix F continued Plant communit
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Vegetation Classification and Distr
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G4 B1 Cottonwood / Rubber Rabbitbru
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G6 B3 Blue Sage Dwarf-Shrubland Fig
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G8 B5 Copperweed - Alkali Sacaton S
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G10 B7 Drummond Goldenweed - Gallet
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G12 B9 Greasewood / New Mexico Salt
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G14 B11 Iodine Bush Shrubland Figur
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G16 B13 Sandsage Colorado Plateau S
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G18 B15 Tamarisk Shrubland Figure.G
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G20 B17 Winter-fat / Blue Grama Dwa
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G22 B19 Alkali Sacaton - Blue Grama
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G24 B21 Blue Grama Herbaceous Veget
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G26 B23 Galleta - Alkali Sacaton He
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G28 B25 New Mexico Saltbush / Alkal
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G30 B27 Russian Thistle Sand Dune V
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G32 B29 Arizona Siltbush Sparse Veg
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G34 B31 Slender Buckwheat Sparse Ve
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G36 B33 Airstrip Figure.G65..Photos
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G38 B35 Barren Wash Figure.G68..Gro
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G40 B37 Park Sites Figure.G71..Phot
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G42 B39 Residences Figure.G73..Phot
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G44 B41 Run-off Control Feature Fig
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G46 B43 Stock Ponds Figure.G77..Pho
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G48 B45 Vegetated Wash Complex Figu
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Appendix H: Accuracy Assessment Dat
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Table H-4. Contingency table: Manag
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The Department of the Interior prot
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Vegetation Classification and Mapping Project Report - USGS

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