Which impact followed the degradation of terrace walls following depopulation after European contact, in the Andes?

💡 Explanation

When terrace walls degrade, soil erosion accelerates, increasing sediment deposition because the terraces no longer trap the eroded material, leading to sedimentation of the irrigation system. Therefore increased sediment occurs, rather than reduced salinity, enhanced fixation, or improved infiltration which result from very different mechanisms ."

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