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. 2007 Aug 8;104(33):13268–13272. doi: 10.1073/pnas.0611508104

Table 1.

Characteristics of erosion rate distributions for the compiled data presented in Figs. 1 and 2

Measurement type Sample size, n Median, mm/yr Mean, mm/yr Standard error, mm/yr
Conventional agriculture 448 1.537 3.939 0.321
Conservation agriculture 47 0.082 0.124 0.022
Native vegetation 65 0.013 0.053 0.016
Soil production 188 0.017 0.036 0.004
Geological 925 0.029 0.173 0.029

Data sources are listed in SI.