[1]SUN Zhenting,HU Xia,LI Zongchao,et al.Correlations Between Soil Physical-Chemical Proprieties and Soil Splash Erosion Rate[J].Research of Soil and Water Conservation,2017,24(03):53-58.
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Correlations Between Soil Physical-Chemical Proprieties and Soil Splash Erosion Rate
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 03
Page number:
53-58
Column:
Public date:
2017-06-28
- Title:
- Correlations Between Soil Physical-Chemical Proprieties and Soil Splash Erosion Rate
- Keywords:
- soil splash erosion; soil physical-chemical proprieties; soil permeability; aggregation; soil particle
- CLC:
- S157.1
- DOI:
- -
- Abstract:
- Soil splash erosion is the beginning of soil erosion process, and results in soil particle dispersion and migration when the raindrop directly blows topsoil. To study the correlations between soil physical-chemical proprieties and soil splash erosion rate, we measured soil splash erosion rate based on artificial simulated rainfall splash erosion experiment, and used SPSS 20.0 software to analyze the Pearson correlation coefficient between the soil physical-chemical properties and soil splash erosion rates. The results show that soil permeability, dispersion rate, aggregation and soil particle have a great influence during the rainfall; soil permeability has negative effects on erosion rate in the whole duration of rainfall; the dispersion rate has a significant negative impact on the soil erosion rate when rainfall duration is 15 minitues; the correlation between aggregation and soil splash erosion rate changes from positive correlation when T=15 min to significantly positive correlation when T=20 min; soil particles are strongly correlated with soil splash erosion rate, and the relationship is more complex. Compared to the other four kinds of grain size, < 0.002 mm soil particle has the greatest impact on soil erosion rate, and has a significant positive effect during the latest two rainfall events. 0.2 ≤ D < 2 mm or 0.02 ≤ D < 0.2 mm soil particle has a significant negative correlation on soil erosion rate when T=15 min and T=20 min, respectively. The correlation of soil erosion rate with soil particle sizes may be related to the soil crust.
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