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- W2615697857 abstract "Research on the vertical migration of soil redistribution induced by tillage and the resultant effects on soil properties is limited for the slope land in non-mechanized agricultural areas. Both land-use types (uncultivated land and cultivated land) were selected in hilly areas of the Sichuan Basin, China to compare the vertical distribution of 137Cs and soil constituents and determine the vertical migration of soil constituents. The 137Cs data showed that vertical soil migration presented an increasing trend from the upper slope positions to the lower slope positions under the transport effect of tillage. The stratification ratio (SR) of soil constituents showed that the mixing effect of tillage resulted in the uniform distribution of soil organic matter (SOM), total nitrogen (TN), available nitrogen (AN), total phosphorus (TP), and available phosphorus (AP) across the soil profile. For SOM, TN, and AN, the vertical migration coefficients (VMCs) were less than 1.0 in the plough layer and more than 1.0 below the plough layer, suggesting that soil constituents were migrated downward from the plough layer to the subsoil（20-35 cm）due to tillage inversion at the middle and lower slope positions, but little migration due to tillage erosion at the upper slope positions. Vertical migration of soil constituents increased from the upper slope positions to the lower slope positions under the transporting effect of tillage. This shows that landscape positions exerted an important impact on the vertical migration of soil constituents. The study indicates that lateral and vertical soil redistribution by the inversion and transport effect of tillage causes the vertical migration of soil constituents and their lateral variability." @default.
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- W2615697857 date "2016-01-01" @default.
- W2615697857 modified "2023-09-26" @default.
- W2615697857 title "Vertical migration of soil constituents due to lateral soil movement under long-term tillage systems" @default.
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