[1]ZHANG Yuhua,ZHOU Beibei,CHEN Xiaopeng,et al.Effect of Nano Carbon on Soil Moisture Movement Characteristics in the Loess Slope Based on Hydrus Simulation[J].Research of Soil and Water Conservation,2020,27(01):132-138.
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Effect of Nano Carbon on Soil Moisture Movement Characteristics in the Loess Slope Based on Hydrus Simulation
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 01
Page number:
132-138
Column:
Public date:
2020-02-20
- Title:
- Effect of Nano Carbon on Soil Moisture Movement Characteristics in the Loess Slope Based on Hydrus Simulation
- CLC:
- S152.72
- DOI:
- -
- Abstract:
- Soil and water loss in the Loess Plateau is serious, and nano carbon can play a good role in regulating water and soil loss on the loess slope. Therefore, this paper analyzed the influence of nano carbon on rainfall erosion on sloping land in loess area by combining the simulated rainfall and the Hydrus model on the field. The relevant parameters are determined by the model to provide a basis for controlling soil and water loss in the loess area and applicability of the evaluation model. The specific results are as follows. Nano carbon can increase the rainfall infiltration on slope soil, increase the soil capacity to accommodate rainfall, and the greater the amount of nano-carbon is applied, the better soil infiltration increases. while the application rate is 1.0%, the cumulative infiltration of bare land, caragana, medlar, soybean, and corn increased by 17%, 5%, 12%, 6%, and 7%, respectively. The simulation results of Hydrus can effectively reflect the effect of nano carbon on the rainfall infiltration on the slope. the Hydrus fitting results are highly reliable through the analysis of the influence of the correlation coefficient R2, the average absolute value error MAE and the root mean square error RMSE. Nano carbon has a great influence on the process of soil water infiltration according to comparing and analyzing the hydraulic parameters of soil fitting. The change of hydraulic parameters has a significant linear relationship with the amount of nano carbon, the suction hd (slope is 41～146), the shape factor n(slope is 0.381～2.573), and the saturated hydraulic conductivity Ks(slope is 0.023～0.064)show the increasing trend with the increase of nano carbon application rate.
- References:
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Last Update:
2020-02-25