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针对农村河道水质恶化和污泥淤积问题,以南方地区典型农村河道为例,提出了包括水质修复和护岸工程措施在内的河道整治方案,并引入主成分分析-投影寻踪分类模型(PCA-PP模型)优选和评价不同河道整治方案。结果表明,利用PCA将多个同类型指标转化为单个指标,有效避免了同类型指标占据过多权重的问题。PCA-PP模型在优选过程中,充分保留了原始数据信息,结果客观,原理科学,具备很好的应用价值和推广前景。竹炭+植物护岸的河道整治方案水质净化效果好,工程造价低廉,综合效益最优,为其他地区的农村河道治理提供了参考。
Aiming at the problem of deterioration of water quality and sludge deposition in rural rivers, taking the typical rural rivers in southern China as an example, a plan of river rehabilitation including water quality restoration and revetment engineering measures is put forward. The principal component analysis - projection pursuit classification (PCA- PP model) to optimize and evaluate different river regulation programs. The results show that the use of PCA will be more than the same type of indicators into a single indicator, effectively avoiding the same type of indicators overweight problem. PCA-PP model in the preferred process, the full retention of the original data and information, the results objective, scientific principle, with good application value and promotion prospects. Bamboo charcoal + phytoremediation of the river bank rehabilitation program water purification effect is good, the project cost is low, the best overall efficiency, for other areas of rural river management provides a reference.