Remote Sensing of Vegetation Change

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Remote Sensing of Vegetation Change

• Jesse Fujikawa
• Bernhard Preusser

Presentation for ESM266 Remote Sensing 5/21/2005
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Objectives

• Use remote sensing data to determine the extent
  of grassland conversion in California

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Methods

• Use NDVI to
• Identify seasonal changes in vegetation cover
• Identify conversion of natural vegetation

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Data Source

• Landsat 7
• Californias Central Valley
• Winter 1999 - Summer 2002

Data retrieved from http//casil-mirror1.ceres.c
a.gov/casil/gis.ca.gov/landsat7/
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Seasonal Variation NDVI
12/30/1999
06/29/2002

• Landsat 7 path/row 044033 Sacramento

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Seasonal Variation NDVI

• Change in NDVI from Winter to Summer
• Red Increase
• Blue Decrease

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Bakersfield Home of the Golf Course Man
12/16/1999
Change from 1999-2002
08/02/2002
Landsat 7 Path/Row 042035
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Density Slice
Change Detection Map
Density Slice of Change Detection Map

• Density Slice Legend Red, Dark Green, Blue and
  Yellow show decreases. Cyan is no change.
  Magenta, Maroon, and Sea Green show increases.

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Confirmation Google Maps
Image of Bakersfield from maps.google.com
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Conclusions

• If we had more data (and time)
• Seasonal comparisons within a year
• Interannual comparisons
• Land Use change over time