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Published bySabina Bernadette Blake Modified over 6 years ago
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A Comparative Analysis of Urban Tree Canopy Assessment Methods in Minnesota
Remote Sensing of Natural Resources and Environment | FR | University of Minnesota Philip J Potyondy
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Digitize urban forest canopy cover using image classification remote sensing techniques and software over study areas.
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Digitize urban forest canopy cover using image classification remote sensing techniques and software over study areas. 24.71%
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Digitize urban forest canopy cover via technician photo interpretation over study area.
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Digitize urban forest canopy cover via technician photo interpretation over study area.
18.03%
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Digitize urban forest canopy cover via technician photo interpretation within stratified random sampled blocks.
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Definition of variables:
Village X (vX); Area of Village X = A vX Zone Q (zQ); Area of zQ = A zQ Study Block 1 (sb1); Area of sb1 = A sb1 Study Block 2 (sb2); Area of sb2 = A sb2 Study Block 3 (sb3); Area of sb3 = A sb3 Zone R (zR); Area of zR = A zR Study Block 4 (sb4); Area of sb4 = A sb4 Study Block 5 (sb5); Area of sb5 = A sb5 Zone S (zS); Area of zS = A zS Study Block 6 (sb6); Area of sb6 = A sb6 Study Block 7 (sb7); Area of sb7 = A sb7 Equations: Geographic Weight of Study Block 1 = (A sb1 /A zQ) Percent Canopy of Study Block 1 = C sb1 Estimated Percent Canopy of Zone Q = C zQ = [(A sb1 / A zQ) * C sb1] + [(A sb2 / A zQ) * C sb2] + [(A sb3 / A zQ) * C sb3] Estimated Percent Canopy of Zone R = C zR = [(A sb4 / A zR) * C sb4] + [(A sb5 / A zR) * C sb5] Estimated Percent Canopy of Zone S = C zS = [(A sb6 / A zS) * C sb6] + [(A sb7 / A zS) * C sb7] Estimated Percent Canopy of Village X = C vX = [(A zQ / A vX) * C zQ] + [(A zR / A vX) * C zR] + [(A zS / A vX) * C zS]
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Digitize urban forest canopy cover via technician photo interpretation within stratified random sampled blocks. 17.28%
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Calculate urban forest canopy using field collected tree canopy width measurements within stratified random sampled blocks.
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Calculate urban forest canopy using field collected tree canopy width measurements within stratified random sampled blocks. 16.32%
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Calculate urban forest canopy using randomly generated points within study area interpreted by a technician - iTree Canopy
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Calculate urban forest canopy using randomly generated points within study area interpreted by a technician - iTree Canopy 18.2%±3.88
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Exiting data Tree Species
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