Notice of RetractionEffects of enclosue on soil and water loss in the hilly areas of regosols in Sichuan Basin, China

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

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Enclosure is one of the most important measures used for soil and water conservation and has been implemented since the 1970s in Sichuan Basin, China. To understand the impact of enclosure on soil and water loss, soil loss and runoff were monitored in erosion plots on steep slopeland in a hilly area of the Sichuan Basin in the period 1983-2007 under three treatment regimens: enclosure, nonenclosure, and farming. The soil and water loss moduli per unit rainfall measured with the factor ER (rainfall kinetic energy × rainfall) better minimized the effects of rainfall variation on soil and water loss, because the variation coefficients for the soil and water loss moduli per unit ER were smaller than those calculated per unit R (rainfall). The most effective conservation practice was enclosure, which reduced the erosion rate per unit ER by 62.52% and 77.80%, respectively, compared with the rates under non-enclosure and farming. After enclosure had been implemented for seven years, soil and water loss were reduced to nearly zero and were maintained there. These results suggest that the efficiency of enclosure in controlling soil and water loss is not only the highest but also the most stable of the practices studied. Therefore, among the three typical control measures used to control soil and water loss, enclosure is the best conservation practice in the studied area.