Sunday, December 14, 2014

GIS I LAB 5: Choice Project

Introduction: 

With this lab I wanted to map the ideal land in Eau Claire County to build a community greenhouse on. The product will show the agricultural land, within 5 miles of a k-12 school, and within 100 yards of a major road. I would hope to show this map to a town committee that would be interested in pursuing a neighborhood garden.  I would use this information to choose which towns to speak with. I can also use this as a starting point to further my selection for greenhouse locations, for example, if more criteria become important in deciding which land could sustain a greenhouse, I could continue improving this map.

Data Sources: 

I got my data from our 2009-07-13_EauClaire geodatabase and from the City of Eau Claire Geodatabase. I manipulated zoning boundaries data, reality property information, school locations, major road maps, and county boundaries data to get to my conclusions. A concern I have about my data has to do with the school locations that I used. I set a single Buffer around any school in Eau Claire County. Maybe separating these schools into elementary, middle, and high school and then setting a buffer around those locations individually would have been a better choice for this data. This would allow me to choose a location where there are a variety of school levels within a close range. Instead of maybe running into an issue where I choose a land plot that only has one school near it versus a land plot that is close to many schools, therefor allowing more schools easy access to the greenhouse as a learning space.

Methods: 

Using the Join, Buffer, Erase, and Intersect tools, I was able to answer the question, where is the best land plot in Eau Claire County to build a community greenhouse? I had available to me, Realtor Property, Parcels in Eau Claire County, School Locations from 2013-14, and the Major Roads throughout the county. I was able to come up with all the suitable areas for the greenhouse in Eau Claire County. 




Results: 

My result was a map of the agricultural land, within 5 miles of a k-12 school, and within 100 yards of a major road in Eau Claire County.



Evaluation: 

I enjoyed the freedom of this project. I found it a lot easier to construct my map when I knew what the final product should be, from the beginning. This made choosing what tools and settings to use to get to the end product much easier because I knew what I needed to accomplish to get there. I would love if I could have spent more time on this project. If we had 2 weeks rather than just one then we could have developed our projects more. Otherwise, I thought this was a wonderful application of the work I have been doing all semester.

Saturday, December 13, 2014

GIS I LAB 4: Vector Analysis with ArcGIS

Goal:

Use various tools in ArcGIS to determine suitable habitat for Bears in Marquette County, MI based on varying criteria gathered in varying techniques.

Objectives:

  • Make a map showing the locations of Black bears in Marquette County.
  • Using the locations provided, find the land cover in which bears frequent the most.
  • Determine if stream location is an important criteria to consider for bear habitat. 
  • To find suitable bear habitat in Marquette County based on two criteria.
  • Find all areas of suitable bear habitat within areas managed by the Michigan DNR.
  • Then illuminate the land close to Urban Areas.
  • Create a map showing Suitable Bear Habitat.
  • Make a data Flow Model of the steps used to obtain the end results.

Background:

Students apply past knowledge of techniques taught throughout this course in a Real world example of determining where the ideal Bear Habitat for Bears would be in Marquette County, MI. 

Methods:

In order to obtain the data necessary to begin our lab students needed to create event themes from X Y coordinates that were in a non- spatial database.

The data we gathered was the exported as a feature class. This data was locations of Bears in Marquette County, MI. Next we wanted to Detirmine what type of habitat was supporting these bears sighted in the county. To do this, students manipulated the Landcover layer to show the type of cover the bears preferred. Using a spatial operation and the Union tool, students were able to create a layer of the location of the top three Landcover types that bears prefer.

The next task was to determine if stream location was an important habitat characteristic for the bears in Marquette County.  More than 30% of the bear locations were within 500 meters of a stream which biologists consider to be an important characteristic. So, students used the Buffer tool on the stream layer in order to make a layer of the land in Marquette county that is within 500 meters of a stream. By dissolving these areas together and intersecting them with the Popular landcover for bears layer, you have the locations suitable for Bear Habitat in Marquette County.

Another characteristic for Bear habitat was then added, the political boundries of the DNR Management lands. The intersect tool was used to add the DNR land layer to the current Bear Habitat Layer that students created. Using Dissolve the locations all joined together to show a layer of the suitable Bear Habitat inside of DNR Managed Land.

Students then made a layer of the urban areas in Marquette County by selecting all the Urban Areas in the Landcover layer and adding a 5 km Buffer around them.

The Erase Tool was used with the layer of the suitable Bear Habitat inside of DNR Managed Land and the layer just created.

Lastly, students had to create a cartographically pleasing map of their final products.

Results:

Students results were a map of all the Land suitable for Bear Habitat inside of Marquette County, MI. Further, the locations of Land suitable for Bear Habitat inside DNR Managed land at least 5 km from an Urban Area in Marquette County, MI. 

Figures:

 
  

Sources:

Landcover is from USGS NLCD
http://www.mcgi.state.mi.us/mgdl/nlcd/metadata/nlcdshp.html
DNR management units
http://www.dnr.state.mi.us/spatialdatalibrary/metadata/wildlife_mgmt_units.htm
Streams
http://www.mcgi.state.mi.us/mgdl/framework/metadata/Marquette.html