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Strength of correlation (R squared): 0.531 (this correlation is weak)
Outliers:
United Arab Emirates,
Libya
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X Axis |
Y Axis |
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| Variable: |
Environment > NOx emissions per populated area |
Agriculture > Yield > Wheat |
| Plot Display: |
Logarithmic (base 10) |
Logarithmic (base 10) |
| Definition: |
NOx emissions per populated land area
Units: 1000 Metric Tons/Sq. Km. of Populated Land Area
Units: We obtained the total emissions for each country by summarizing emissions data, originally available as a grid map with 1 degree x 1 degree cells. Air pollution is generally greatest in densely populated areas. To take this into account, we used the Gridded Population of the World dataset available from CIESIN and calculated the total land area in each country inhabited with a population density of greater than 5 persons per sq. km. We then used this land area as a denominator for the emissions data. |
Yield of Wheat, Metric tons per hectare, 2003/2004 |
| Source: |
Intergovernmental Panel on Climate Change: Special Report on Emissions Scenarios, Data Version 1.1, B1Illustrative Marker Scenario with model IMAGE |
Production Estimates and Crop Assessment Division, FAS, USDA |
| Correlations: |
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