Environmental and Economic Impacts of Soil Erosion and Fertility Mining in Northern Tanzania

نویسندگان

  • Ephraim Nkonya
  • Andrew Barkley
  • Steve Hamilton
  • Daniel Bernardo
چکیده

This paper develops a soil conservation model that is relevant to smallholder farmers who applylittle or no fertilizer. Empirical results drawn from northern Tanzania imply that, ignoringfertility mining problem in model specification leads to overestimation of profits for farms thatapply little or no fertilizer. The model also shows that, the impact of output price on soilconservation efforts depends on the curvature of the soil erosion function.

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تاریخ انتشار 1999