Download Crop Yield in North Dakota as a function of Precipitation

Crop Yield in North Dakota as a
function of Precipitation
Tyler McEwen
GIS in Water Resources
Term Project Presentation
12/7/2006
Presentation Overview
Introduction/Objectives
 Data Collection
 Data Manipulation/Computation
 Results
 Conclusions

North Dakota: Facts
•
•
•
•
Largest City: Fargo
Population 90,672
Total Population
636,677
Total Area
68,676 square miles
21.0 % Total Jobs From
Agriculture/Related Work
Original Objectives





Obtain soil survey for entire state!!
Join crops to soil type and Land Use/Land Cover
(LULC) data
Precipitation calculations and manipulations
Interpolate precipitation data
Create crop yield predictive model
Current Objectives





Join crop yield data to county shapefile
Perform precipitation calculations and
manipulation
Interpolate precipitation for 10 years of data
Create animations of crop yield versus
precipitation
Derive correlations
Data Sources
National Agricultural Statistics Service (NASS)
http://www.nass.usda.gov/
National Climate Data Center – Climate Data Online
http://cdo.ncdc.noaa.gov/CDO\
National Weather Service OST/SEC GIS Map Group
http://www.nws.noaa.gov/geodata/catalog/national/html/us_state.htm
InfoPlease.com
http://www.infoplease.com/ipa/A0108256.html
Precipitation Data




Approximated growing season dates
Growing Season (May – September)
Spring & durum wheat, corn, barley, sugarbeets,
flaxseed, soybeans, canola, sunflower, hay and
potatoes
Extrapolated precipitation data for growing
season
Data Collection
Data Collection
Data Manipulation/Calculation
Calculated total rainfall during crop
growing season
 Joined rainfall to precipitation stations
 Interpolated rainfall using Spline method

Precipitation Interpolation
Results

To the animations!
Conclusions
No correlation between precipitation and
crop yield…yet
 East vs. west correlation

Goals
Produce more animations
 Find correlation

Special Thanks
Grandfather
 Dr. Maidment
 Tyler Jansen
 Fellow students

Questions???