Sunday, October 3, 2010

Project 2: GIS and Landscape Design: Part 2 Analyze



Project 2 in GIS 4930 Special Topics in GIS focuses on GIS and Landscape Design/Management. The scenario involves using a GIS to answer questions related to Small Business Environmental Stewardship Assistance Act of 2010 which encourages communities to plant trees in urban neighborhoods in order to revitalize communities.

In the preparation phase ortho-images of Marin City, CA were reclassified to identify three distinct classes of ground cover - Trees, Grasses and Impervious Surfaces. Once reclassification was completed using ArcGIS Spatial Analysis tools, the analyze phase focused on looking at calculating percent tree cover, carbon storage and carbon sequestration for five selected neighborhoods within the city area. The analysis performed is a good demonstration of the way a GIS can be used to derive quantitative spacial information about an area from a basic image.

Using the reclassified image, each neighborhoods ground cover classifications were extracted allowing for the calculation of the area, acreage and percent of total coverage for each class of land cover. The data from those calculations was used to calculate estimated carbon storage and carbon sequestration values for each neighborhood based on CITYGreen methods and equations. The result is the posted map which shows each of the five neighborhoods statistics allowing for the easy determination of which areas in Marin City are more likely to benefit from tree planting programs.

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