Spatial and temporal changes of soil physical properties of an Andisol in southern Chile as a consequence of grazing and wetting and drying cycles

摘要

Weather, human activity and different soil management are factors that lead to spatial and temporal variations in soil physical properties. The aim of this study was to study the effects of grazing and wetting and drying (WD) cycles on some time-spacedependent physical properties of an Andisol (Duric Hapludand) in southern Chile. Temporal changes in soil water content (WC) influenced the penetration resistance (PR), and were also related to the aggregate strength (AS) and precompression stress (Pv).Soil compaction caused by livestock not only affected PR spatially, but also disturbed the pore continuity, thus reducing the air conductivity of the soil.