| How can stream bank erosion be predicted on small water courses? Verification of BANCS model on the Kubrica watershed |
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| 引用本文： | Zuzana Allmanova,Maria Vlckov,Martin Jankovsky,Michal Allman,Jan Merganic.How can stream bank erosion be predicted on small water courses? Verification of BANCS model on the Kubrica watershed[J].国际泥沙研究,2021,36(3):419-429. |
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| 作者姓名： | Zuzana Allmanova Maria Vlckov Martin Jankovský Michal Allman Jan Merganic |
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| 作者单位： | Department of Forest Harvesting;Department of Forestry Technology and Constructions |
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| 基金项目： | This research was supported by the Slovak Research and Development Agency(APVV)[Grant No.18e0305]“Utilisation of progressive methods for evaluation of forest logging impacts on forest ecosystems and road network”and by Slovak Scientific Grant Agency VEGA[Grant No.1/0241/20]“Optimization and environmental impact of logging technologies in close to nature forest management”. |
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| 摘 要： | The current paper deals with the evaluation of the BANCS erosion prediction model and its two componentsethe Bank Erosion Hazard Index(BEHI)and Near-Bank Stress(NBS)indices.To construct the erosion prediction curves,18 experimental sections were established on the Kubrica Stream,district of Trencín,Slovakia.Each section was assessed through the NBS index and BEHI index and real annual bank erosion was measured using erosion toe pins.Subsequently,the relations between the BEHI and real annual bank erosion was assessed through regression and correlation analyses.The relation proved to be moderately strong,with the correlation coefficient(R)reaching 0.47.Further,the relation between the NBS index and real annual bank erosion was evaluated,which was also moderately strong,with R=0.65.Based on the measured data,two erosion prediction curves were constructed,the first for moderate BEHI,with R=0.69 and coefficient of determination(R2)of 0.47 and the second for high BEHI with R=0.74 and R2=0.55.The prediction curves were based on data from one year of measurements and can,therefore,be used only for discharges that occurred within that year and in the region where the model was developed.In the current case,according to runoff Curve Numbers(CN),the real culmination discharge was Q=1.88 m3/s,which is roughly equivalent to 1.5-year recurrence interval flow(Q1.5).
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| 关 键 词： | Bank erosion Bank assessment for non-point source consequences of sediment(BANCS) Bank erosion hazard index Near-bank stress index Erosion prediction curves |
| 收稿时间： | 19 May 2020 |
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