Lab 4: Carver, Massachusetts Farm Loss using Rater Data

  For this project, we each had a different town in Massachusetts and we had to calculate the farm loss using Raster Data.  We had a guest speaker Maggie Payne from the NRCS office in Wareham, Massachusetts.  Using data that was collected in 2010, we can see newer data that was collected and see the farm loss in the last 7 years.  The first step was to select a town.  After that, we then had to use the Extract by Mask tool and clips the raster data that we used for this project.  Then I had to extract the data so I was only working with the prime farmland loss in Carver.  In the data set, there us a map unit that had to be joined with my one combined class.  The count number measured in meters had to be multiplied by 100 then converted to square kilometers.  After that, I had to use the Extract by Mask tool again and combine the raster data.   After completing that, we had to figure out the count.  The count number is measured in meters and had to be multiplied by 100 and then converted to square kilometers.  Having done that, I then had to unjoin the map unit data and rejoin the data again to the final raster data set.  Finally, I had to calculate the farmland loss in Carver .  The way you figure that out is to figure the count out again multiply it by 100 and convert it to square kilometers.

Tables 1 & 2

Map of Farm Loss in Carver, Massachusetts