[1]AN Juan,WANG Fu,WU Yuanzhi,et al.Effect of Land Use Types on Aggregate Stability for Cinnamon Soil in Earth-Rocky Mountainous Area of Northern China[J].Research of Soil and Water Conservation,2020,27(05):10-16.
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Effect of Land Use Types on Aggregate Stability for Cinnamon Soil in Earth-Rocky Mountainous Area of Northern China
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 05
Page number:
10-16
Column:
目次
Public date:
2020-08-20
- Title:
- Effect of Land Use Types on Aggregate Stability for Cinnamon Soil in Earth-Rocky Mountainous Area of Northern China
- Keywords:
- Le Bissonnais method; distribution of soil aggregates; mean weight diameter; relative slaking index; soil erodibility values.
- CLC:
- S152.4
- DOI:
- -
- Abstract:
- Land use type is one of the most important factors affecting soil aggregate stability. However, a less information is available for the effect of land use types on soil aggregate stability in the earth-rocky mountain areas of northern China. In this study, the distribution characteristics, stability, and erodibility of soil aggregate in four land use types of cultivated land, waste land, fallow land, and Flos lonicerae land(Lonicera japonica Thunb)were analyzed with the Le Bissonnais method. This method included three treatments, namely fast-wetting treatment(FW), wetting-stirring treatment(WS), and slow-wetting treatment(SW). The results showed that under FW treatment, the size distribution of soil aggregate for cultivated land, waste land, and fallow land was mainly concentrated on <0.5 mm aggregate, >0.2 mm aggregate for Flos Lonicerae land; under WS and SW treatments, >0.2 mm aggregate occupied the largest percentage of soil aggregate for the four land use types; difference in 2～5 mm aggregate was the most pronounced among the four land use types; the mean weight diameters of soil aggregates decreased the order: SW>WS>FW, and soil erodibility values(K)decreased in the sequence: FW>WS>SW; in addition, the relative slaking index(RSI)was significantly greater than the relative mechanical breakdown index(RMI), indicating that slaking was the mainly breakdown mechanism for soil aggregate, followed by mechanical breakdown. Regardless of treatments, the MWD of soil aggregate decreases in the order: Flos lonicerae land>fallow land>waste land>cultivated land. RSI and K decrease in the order: cultivated land>waste land>fallow land>Flos Lonicerae land. The above results indicate that planting Flos lonicerae can greatly improve soil aggregate stability, and strengthen resistance to soil erosion.
- References:
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Last Update:
2020-08-25