遗传投影寻踪回归模型在地下水环境脆弱性评价中的应用

摘要

利用大样本数据、投影寻踪、遗传算法、逻辑斯蒂曲线,建立了遗传投影寻踪等级评价模型（RAGA-PPGE）.以宁陵县地下水脆弱性评价为例,选取该区域14个监测点的14项监测指标作为评价因子,对宁陵县地下水脆弱性进行评价.通过与模糊综合评价法计算结果进行比较,遗传投影寻踪等级评价模型能够更真实客观地反映地下水脆弱性,具有很好的应用价值.%To avoid the non-uniformity of different index-based evaluation results and to improve the evaluation precision,a new projection pursuit grade evaluation model（RAGA-PPGE） is developed for the groundwater environmental vulnerability evaluation based on projection pursuit,genetic algorithm,logistic curve,and a great deal of sampled data created by Monte Carlo method from the assessment standards,and the detailed modeling steps were also given.Then the proposed model was applied to analyze the groundwater vulnerability in Ningling County.Compared with the results of fuzzy method,it shows that the proposed model is an effective and practical way for groundwater environmental vulnerability evaluation and it has good practical expectation.