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 Smithsonian: Reflections on Earth: Biodiversity and Remote Sensing Teacher Guide
Landsat TM image has a resolution of 30 m. A 1-ha plot (100 m x 100 m) would be equivalent to approximately 9 pixels (a square of 3 pixels by 3 pixels). School biodiversity plots are only 20 m2.) 5. Ask students what factors might affect the use of satell...
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Landsat TM image has a resolution of 30 m. A 1-ha plot (100 m x 100 m) would be equivalent to approximately 9 pixels (a square of 3 pixels by 3 pixels). School biodiversity plots are only 20 m2.) 5. Ask students what factors might affect the use of satellite images. (Cloud cover, for example, can reduce the detail obtained from a Landsat image.) EXTENSIONS 1. Repeat the above activity with a satellite image of your school site, (which should be available from the USGS web site) and a local topographic map
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http://www.nasm.si.edu/education/pubs/reflecttg.pdf#page=18
www.nasm.si.edu/education/pubs/reflecttg.pdf#page=18
Accurate land cover maps enable us to identify and preserve areas that have <span class="highlight">the</span> greatest potential contribution to long-term conservation <span class="highlight">of</span> biodiversity, and they target sites that will provide <span class="highlight">the</span> most useful information <span class="highlight">for</span> scientists and policymakers. According to <span class="highlight">the</span> National Aeronautics and Space Administration’s (NASA’s) education module, “Studying Earth’s Environment from Space,” land cover <span class="highlight">classification</span> <span class="highlight">using</span> remote sensing is <span class="highlight">based</span> on <span class="highlight">the</span> assumption that different types <span class="highlight">of</span> land cover have distinct
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http://www.nasm.si.edu/education/pubs/reflecttg.pdf#page=21
www.nasm.si.edu/education/pubs/reflecttg.pdf#page=21
Landsat TM <span class="highlight">image</span> has a <span class="highlight">resolution</span> <span class="highlight">of</span> 30 m. A 1-ha plot (100 m x 100 m) would be equivalent to approximately 9 pixels (a square <span class="highlight">of</span> 3 pixels by 3 pixels). School biodiversity plots are only 20 m2.) 5. Ask students what factors might affect <span class="highlight">the</span> use <span class="highlight">of</span> <span class="highlight">satellite</span> <span class="highlight">images</span>. (<span class="highlight">Cloud</span> cover, <span class="highlight">for</span> example, can reduce <span class="highlight">the</span> detail obtained from a Landsat <span class="highlight">image</span>.) EXTENSIONS 1. Repeat <span class="highlight">the</span> above activity with a <span class="highlight">satellite</span> <span class="highlight">image</span> <span class="highlight">of</span> your school site, (which should be available from <span class="highlight">the</span> USGS web site) and a local topographic map
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