[1]ZHAI Hui,LI Guorong,LI Jinfang,et al.Effects of Rodent Mounds on Soil Wind Erosion in Alpine Degraded Grassland of the Yellow River Source Zone[J].Research of Soil and Water Conservation,2022,29(06):14-20.
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Effects of Rodent Mounds on Soil Wind Erosion in Alpine Degraded Grassland of the Yellow River Source Zone
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 06
Page number:
14-20
Column:
Public date:
2022-10-20
- Title:
- Effects of Rodent Mounds on Soil Wind Erosion in Alpine Degraded Grassland of the Yellow River Source Zone
- CLC:
- S157.1
- DOI:
- -
- Abstract:
- In order to clarify the characteristics and rules of rodent mound soil under wind erosion in alpine grasslands of the Yellow River Source Zone, the rodent mounds in the degraded grasslands area of Henan County in Qinghai Province was taken as the research object. The effects of the wind on the size, shape, soil water content and root content due to wind erosion on rodent mound soil under different wind speeds were carried out by field artificial simulated wind erosion tests. The results showed that the amount of soil wind erosion increased with the increase of wind speed on rodent mounds in alpine grasslands. The amount of soil loss was proportional to wind speed and the size of the rodent mound, and it increased 1.22～1.79 times when wind speed gradually increased from 6 m/s to 12 m/s. The amount of soil loss and the amount of soil wind erosion is different with the shape of rodent mounds under the same conditions. The degree of wind erosion on each of the three shapes of rodent mounds is in the order of hemispherical shape>concave-convex shape>flat shape, and the amount of soil loss of the hemispherical mounds was 35.5% and 92.6% higher than that of the concave-convex mounds and flat mounds respectively. The most sensitive period of the soil wind erosion rate on rodent mounds is the first 5 minutes. The amount of soil loss decreased with the increase of vegetation roots and soil water content, which indicates that these factors have an inhibitory effect on the amount of soil wind erosion, and they are important anti-erosion factors of the rodent mounds.
- References:
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Last Update:
2022-10-20