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首页> 外文期刊>Journal of the American Water Resources Association >APPLICATION OF ROSGEN'S BANCS MODEL FOR NE KANSAS AND THE DEVELOPMENT OF PREDICTIVE STREAMBANK EROSION CURVES
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APPLICATION OF ROSGEN'S BANCS MODEL FOR NE KANSAS AND THE DEVELOPMENT OF PREDICTIVE STREAMBANK EROSION CURVES

机译：ROSGEN'S BANCS模型在堪萨斯州的应用及预测性的条纹侵蚀曲线的发展

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Sedimentation of waterways and reservoirs directly related to streambank erosion threatens freshwater supply. This study sought to provide a tool that accurately predicts annual streambank erosion rates in NE Kansas. Rosgen (2001, 2006) methods were employed and 18 study banks were measured and monitored from 2007 through 2010 (May-June). Bank profiles were overlaid to calculate toe pin area change due to ero-sional processes. Streambanks experienced varied erosion rates from similar Bank Erosion Hazard Index (BEHI)-Near Bank Stress (NBS) combinations producing R2 values of 0.77 High-Very High BEHI rating and 0.75 Moderate BEHI rating regarding predictive erosion curves for NE Kansas. Moderate ratings demonstrated higher erosion rates than High-Very High ratings and BEHI trend lines intersected at lower NBS ratings, suggesting a discrepancy in the fit of the model to conditions in the NE Kansas region. BEHI model factors were evaluated and assessed for additional influences exerted in the region. Woody vegetation adjacent to the stream seemed to provide the most variation in erosion rates. This study's findings allowed us to calibrate and modify the existing BEHI model according to woody vegetation occurrence levels along streambanks with high clay content. Modifications regarding vegetation occurrence of the BEHI model was completed and the results of these modifications generated new curves resulting in R2 values of 0.84 High-Very High BEHI and 0.88 Moderate BEHI ratings.
机译：与河岸侵蚀直接相关的水道和水库沉积物威胁着淡水供应。这项研究试图提供一种工具，可以准确预测堪萨斯州东北部的年河岸侵蚀率。从2007年到2010年（5月至6月），采用Rosgen（2001，2006）方法，对18个研究银行进行了测量和监测。覆盖堤岸轮廓以计算由于侵蚀过程而导致的脚趾销面积变化。对于类似堪萨斯州的预测侵蚀曲线，河岸经历了类似的河岸侵蚀危害指数（BEHI）-近河岸应力（NBS）组合不同的腐蚀速率，其R2值分别为0.77高-非常高BEHI和0.75温和BEHI。中度评级显示的腐蚀速率高于高极高级评级，并且BEHI趋势线在较低的NBS评级下相交，这表明该模型与东北堪萨斯州地区的拟合度存在差异。对BEHI模型因素进行了评估，并评估了在该地区施加的其他影响。溪流旁的木本植被似乎提供了最大的侵蚀速率变化。这项研究的发现使我们能够根据沿粘土含量高的河岸上的木本植被发生水平来校准和修改现有的BEHI模型。 BEHI模型有关植被发生的修改已完成，这些修改的结果生成了新曲线，得出R2值为0.84高-非常高BEHI和0.88中度BEHI等级。

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