“…This happens because the price of the product is increased by the amounts spent on repairing the damage that soil erosion causes on the farming Bennett (1933), Baver (1951), Marques et al (1961), Larson et al (1983), Clark (1985), Ervin and Mill (1985), Gardner and Barrows (1985), Fletcher (1985), Hertzler et al (1985), Crosson (1985Crosson ( , 2007, Crowder (1987), Moore and McCarl (1987), Foster et al (1987), Holmes (1988), Ribaudo et al (1989), Palmquist and Danielson (1989), , Robertson and Colletti (1994), Pimentel et al (1995), Alfsen et al (1996), Tenberg et al (1998), Pimentel and Kounang (1998), Marques (1998), Uri (1999Uri ( , 2000Uri ( , 2001, Gunatilake and Vieth (2000), Pretty et al (2000), Bandara et al (2001) land (represented by the shaded area in Figure 1). This off-site impact shifts C to C', generating a shift along curve D from point A to point B, so that the quantity produced drops from Q 1 to Q 2 , and the price increases from P 1 to P 2 (Figure 1).…”