[1]XU Li,LIU Yu,ZHANG Zhongqi,et al.Variation of Soil Compaction and the Impacts of Hydrological Connectivity on Shrub-Grass Mosaic Slope[J].Research of Soil and Water Conservation,2020,27(05):133-137,146.
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Variation of Soil Compaction and the Impacts of Hydrological Connectivity on Shrub-Grass Mosaic Slope
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 05
Page number:
133-137,146
Column:
目次
Public date:
2020-08-20
- Title:
- Variation of Soil Compaction and the Impacts of Hydrological Connectivity on Shrub-Grass Mosaic Slope
- CLC:
- S152; K903
- DOI:
- -
- Abstract:
- In semi-arid areas, the vegetation distribution inlaid with grass and shrubs will significantly change this pattern. Hydrological connectivity is an effective indicator for erosion risk. Therefore, the hydrological connectivity concept is used to characterize the shrub-grass mosaic hillslope. And then the response of the soil compaction on the hillslope to the hydrological connectivity was explored. A hillslope with shrub-grass mosaic, which is typical in the Luhe River Basin, was selected as study site to investigate the impact of vegetation pattern and hydrological connectivity on the variation of soil compaction. Soil compactness of 93 points for shrub and grass patches respectively was surveyed on the hillslope. The results showed that at the same slope position, soil compactness of shrub patches was lower than that of grassland patches, the maximum difference of soil compactness between shrub patches and grass pattches was 23.66 kg/cm2, and the minimum difference was 1.49 kg/cm2; the soil compactness of shrub and grassland increased first and then decreased from the upslope to the foot of the slope; the soil compactness of shrub soil decreased with the increase of flow accumulation, while soil compactness of grassland increased with the increase of flow accumulation. Difference in capacity of sediment retention and regulation of livestock movement routes are important causes for the spatial variation of soil compactness, as well the soil compactness difference between shrub patches and grass patches.
- References:
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Last Update:
2020-08-25