基于投影寻踪法的水库富营养化评价——以深圳市铁岗水库与石岩水库为例

通过构建投影指标函数和采用遗传算法对投影方向进行优化,建立了基于投影寻踪法的水库富营养化评价模型,并应用于深圳市铁岗水库与石岩水库的富营养化评价。研究结果表明,铁岗水库的营养状态值为50.4~54.7,石岩水库为53.4~57.6,峰值出现在夏秋季,2个水库均达到轻度富营养化水平,石岩水库的富营养化程度相对较高。投影寻踪法的评价结果与线性插值评分法相近,但反映了不同评价指标对营养状态的贡献差异,更为科学合理,值得推广应用。

Eutrophication Assessment of Reservoirs Based on Project Pursuit Method:A Case Study of Tiegang Reservoir and Shiyan Reservoir in Shenzhen

An eutrophication assessment model based on project pursuit method is brought up in this paper.A projecting index function is constructed to reflect the characters of multidimensional data,and then a genetic algorithm is used to solve this projecting index function and get the optimal projecting direction.The projecting value of assessment samples can be calculated via projecting direction and finally be transferred to a composite nutritional status index.The model is applied to Tiegang Reservoir and Shiyan...