Soil testing lab
In this lab we measured the soil temperature of many different biomes on campus. The five biomes we tested were Woodland, Desert, Meadow, Agrosystem, and Unmulched. We measured the soil temperature at the surface, 5cm deep, and 15cm deep. Below is a graph of all the data compiled.
The data showed that the mulch on each biome acted as insulation, trapping heat inside the ground. The best mulch with the highest sustainability and most insulation was the rice hulls in the Agrosystem.