SHI Zhengle, ZHANG Jianjun, SHEN Mingshuang, et al. Effects of Gully on Soil Water Content in the Catchment Area Above in the Loess Region of Western Shanxi Province[J]. 2022, 36(3): 71-76.
DOI:
SHI Zhengle, ZHANG Jianjun, SHEN Mingshuang, et al. Effects of Gully on Soil Water Content in the Catchment Area Above in the Loess Region of Western Shanxi Province[J]. 2022, 36(3): 71-76. DOI: 10.13870/j.cnki.stbcxb.2022.03.011.
Effects of Gully on Soil Water Content in the Catchment Area Above in the Loess Region of Western Shanxi Province
We selected catchment area above typical gully in the loess region of western Shanxi Province to study effects of gully on soil water content in the catchment area above in the Loess Plateau. The soil water content in a profile of 10 m was measured by soil core method and we discussed the soil moisture status of different landforms in the catchment area. The results showed that:(1) The soil moisture status in the catchment area was affected by the distance from the gully and the landform. (2) Soil water storage at 1 m from the head of the gully was significantly lower than that at 3 and 6 m. Soil water storage was higher in the depression than in the slope. (3)The shallow soil water content of 6 sampling points changed sharply with time
and the deep layer had little changes. (4)The horizontal influence distance of gully on soil water content in catchment area was 1~3 m
for gully in catchment area
7 m for influence depth. It was suggested that drought-tolerant shrubs and herbs with low water consumption should be densely planted near the gully to increase the surface roughness and reduce the water flow velocity. And the plant roots could hold the soil and increase the anti-impact property to control gully erosion.
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