Examples of methods you could use to test for a relationship between vegetation and amount of light include the following:
- Physically cut and weigh all the vegetation within a small plot of land and compare it with the amount of solar radiation the area received.
- Expose plants in a laboratory setting to differing amounts of solar radiation, and compare their growth.
- Choose a specific location on the satellite maps, and quantify the amounts of vegetation and UV exposure there. Compare the two quantities on a graph.