“…At the same time, soil scientists were gaining a better understanding of the relationships between soil distribution and slope characteristics (e.g., soil landscape). In the 1950s, 1960s, and 1970s, regional soil landscape projects were carried out in various parts of the United States (Nettleton and Lynn, 2008a, 2008b; Fenton 2010), with the goal of understanding soil landscape relationships to improve the speed, utility, and accuracy of soil survey. These regional studies were critical in the birth and acceleration of modern soil survey (Indorante et al, 1996).…”