Galina N. Fet [email protected]
description
Transcript of Galina N. Fet [email protected]
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Galina N. Fet [email protected]
Image Processing for Conifer Forest Detection in Tien-Shan Mountains.
Marshall University, Department of Physical Sciences
Geobiophysical Modeling Graduate Program
May 18, 2006
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STUDY AREA
Environmental MonitoringNatural Resources Exploration and ConservationInternational Tourism Development
TIEN-SHAN MOUNTAINS, KYRGYZ REPUBLIC
Google Earth
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STUDY OBJECTIVES
imagery classification: vegetation and non-vegetation feature extraction
vegetation classification and
mappingusing ground data and imagery
species database compilation for
Internet distribution
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VEGETATION COMPLEXITY
Juniper or Spruce clear stands or mix
FOREST => THAN 75 %
Dwarf Juniper and shrubs
Riparian mountain forests with Spruce
Grasslands and mountain meadows with Juniper or dwarf Juniper
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FOREST TYPE
GROUND CONTROL
POINTS DATA AND SPECIES GEODATABASE
DIGITAL ELEVATION
MODEL
SATELLITE IMAGERY AND
ROCESSING SOFTWARE
INCREASE QUALITY AND ACCURACY
PRODUCE ELEVATION LAYER
EXTRACT ELEVATION CONTOURS AND WATERSHEDS
BAND COMBINATION ASESSMENT AND
STATISTICS
3D VISUALIZATION
SPATIAL STATISTICS AND SURFACE ANALYSIS
IMAGE PROCESSING AND CLASSIFICATION
STEPS AND COPONENTS
PLANT ECOLOGY AND
BOTANY
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SPRUCE AND JUNIPER FOREST AT HIGH ALTITUDE
ELEVATIONS
2700 m
2000 m
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ELEVATION
RIPARIAN FORESTS:
SPRUCE AND JUNIPER
BIRCH AND SPRUCE
2000 M
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VEGETATION CONTORURS
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EXTRACTING VEGETATION
Legend
NDVI
Value
0
1-50
1 - 157
158 - 209
210 - 255
.
0 3,250 6,500 9,750 13,0001,625Meters±
ASTER BANDS 2,3
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R CLAY 5/7G OXIDE 3/2B VEGETATION 4/3
Bands 3,2,1,8
BAND COMBINATIONSLANDSAT7 ETM+ ASTER
Bands 7,4,1,8
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GEOLOGICAL FEATURES
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GEOLOGICAL PROCESS
ASTER IMAGERY
RGB SWIR6, NIR3, VNIR1
ICE CAPS - DARK BLUE
ROCKS AND SHALE - YELLOW
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TRAINING AREA
BANDS 531 5,4,2 ASTER ASTER NIR, VNIR AND THERMAL BANDS 4,3,13
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TRAINING AREA
ASTER BROVEY TRANSFORM
R 4/431, G 3/431, B 1/431
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SUPERVISED CLASSIFICATION
DIGITIZING CONTOURS
SPECTRAL SIGNATURES
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SUPERVISED CLASSIFICATION
SPRUCE FOREST mixed with two different species of junupers (Juniperus turkestanica – dwarf juniper and Juniperus semiglobosa),
SPRUCE-BIRCH forest with shrubs and other deciduous trees in the understory.
DWARF JUNIFER SHRUBLIKE FOREST in association with numerous and diverse shrubs in the understory
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SHUTTLE RADAR TOPGRAPHY MISSION
DATA (SRTM30)
30 M RESOLUTION OVER US
90 WORLD
16 M VERTICAL AND 20 M
HORIZONTAL ACCURACY
FREE FTP DONLOAD
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DIGITAL ELEVATION CONTOURS
0 2,100 4,200 6,300 8,4001,050Meters
Legend
el_nat18
elev_pks2
elev_400
River_str
SRTM CONTOURS
(RED)
TOPO MAP CONTOURS
(BLACK)
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ALA-ARCHA WATERSHED AND SRTM ELEVATIONS
0 5,100 10,200 15,300 20,4002,550Meters
Legend
Rivers
SRTM_u03_n042e074.tif
<VALUE>
4284 - 4724
3990 - 4283
3696 - 3989
3549 - 3695
3402 - 3548
3255 - 3401
3108 - 3254
2961 - 3107
2667 - 2960
2373 - 2666
2079 - 2372
1784 - 2078
1490 - 1783
1196 - 1489
902 - 1195
755 - 901
-32767 - 754
-32768
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ELEVATION ZONES OVERLAY
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VEGETATION CLASSIFICATION LAYER DRAPED OVER BAND LS543 COMBINATION
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VEGETATION CLASSIFICATION LAYER DRAPED OVER SRTM DEM
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USED SATELLITE IMAGE CLASSIFICATION AS A MAP BASE FOR CONIFER FOREST GEODATABASE
LANDSAT7 ETM+, ASTER, SRTM
MAPPED THE RESULTS OF BIOTIC SURVEY USSING MODERN GEOREFERENCING TECHNIQUES
DEMOSTRATED IMAGE PROCESSING TECHNIQUES AND CAPABILITIES TO RECOGNIZE LAND USE FEATURESWITH ARCGIS/ARCINFO SPATIAL ANALYST, 3D ANALYST
RESULTS
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The author is grateful to the American Association for Advancement of Sciences providing opportunity for research initiation through a travel grant. Photographs by the author, SMAK and Celestial Mountains Co.