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Investigating Land Cover Change In Crow Wing
CountyEmily Smoter and Michael Palmer
Remote Sensing of Natural Resources and the EnvironmentUniversity of Minnesota
Investigate and quantify percent land cover change in Crow wing County from 1985 to 2006.• With a special interest in the Brainerd area.• Brainerd is a major tourist destination.• Crow Wing County's population has increased by ~20,000 people from 1985-2006.• Brainerd's population has increased by 2,100 in the same amount of time
• With population increases and higher levels of tourism, we will expect to see an increase in urbanization, and overall loss of undeveloped land around Crow Wing County and the Brainerd area.
Project Objective
Increased development• Wildlife Habitat loss• Water infiltration Concerns
o Runoff due to increases in impervious surfaces
Implications of High Density Urban Land Cover
Area of Interest
• Crow Wing County Minnesota
1157 sq/miles
Landsat Imagery Acquired from USGS GloVis
Landsat 5 TMFalse Color IR
Aug 2006
Landsat 4 TMFalse Color IR
Aug 1985
Crow Wing County Vector Layer
• County Vector Image from MNGEO
• Clipped and geo referenced
Land Cover Classification
• 8 Classes1. Water
2. Wetland
3. Forest
4. Low Density Forest
5. Pasture/Grassland
6. Low Density Rural/Agriculture
7. Medium Density
8. Urban/High Density Development
Classifying Land Cover in ERDAS Imagine
1985 Unsupervised Classification 2006 Unsupervised Classification
1985 2006
Accuracy Assessment
Overall Accuracy: 78.10 %
Kappa Statistic: 0.724
Limits of Classification
Comparison and Analysis
Comparing Percent Change in Cover Type Class from 1985 to 2006
Conclusion
Analysis of land cover change confirmed that high density development increased by 138 percent.
• High density development increased around large lakes
• Density of Brainerd & surrounding area increased
• Agriculture, grassland, and low density rural decreased
Thank You
Questions - Comments
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