Franklin Delano Roosevelt's environmental work is very closely related to the study of Environmental Science. He did much work dealing with the conservation of nature, as well as improving human interactions with nature.
Deforestation One of the main causes of erosion during the Dust Bowl was deforestation, since there were no roots to hold the soil together. Roosevelt's Civilian Conservation Corps organized the planting of millions of trees, both to help prevent erosion and to return natural tree cover.
Soil (and Atmosphere) The mid-1930s Dust Bowl of the American midwest occurred because of poor soil conditions, which were due to bad agricultural practices, a severe drought, and deforestation. Franklin Delano Roosevelt, however, was very resourceful and intelligent, so he helped resolve this issue while also creating jobs for the unemployed. Roosevelt created programs that taught farmers correct practices for achieving good soil, created better irrigation systems, and planted trees to help prevent erosion. Eventually, FDR's programs helped put an end to the Dust Bowl and made future dust bowls less likely. By doing so, FDR also helped reduce pollution in the atmosphere that results from many small dirt particles being lifted into the air during a dust bowl.
Hydrosphere The Tennessee Valley Authority (TVA) was a group that Franklin D. Roosevelt created during the Great Depression to provide jobs and do good to the environment. The most known accomplishment of the TVA was the restoration of a hydroelectric power plant in the Tennessee River Valley. This meant that humans could use the energy of flowing water in the hydrosphere to provide electricity, rather than depend on fossil fuels that harm the environment when burned.