Elector Frederick Augustus I of Saxony distributed Sylvicultura financial matters, a 400-page work on ranger service. Expanding upon the thoughts of Evelyn and French clergyman Jean-Baptiste Colbert, von Carlowitz fostered the idea of overseeing woodlands for supported yield. [5] His work impacted others, including Alexander von Humboldt and Georg Ludwig Hartig, in the end prompting the advancement of the study of ranger service. This, thus, affected individuals like Gifford Pinchot, the main top of the US Forest Service, whose way to deal with backwoods the board was driven by the possibility of insightful utilization of assets, and Aldo Leopold whose land ethic was persuasive in the improvement of the ecological development in the 1960s.[5][6]