基于偏最小二乘回归法的河流病因诊断

在分析河流健康外部影响因子的基础上,指出各因素之间存在严重的多重相关性,并应用一种能消除这种不良影响的多元统计方法--偏最小二乘回归法,建立了河流病因诊断模型.结合海宁市辛江塘的具体条件进行了河流病因诊断实例分析,结果表明:影响辛江塘河流健康的最主要的原因为工业污水排放量,其次为GDP,再依次为生活污水排放量、人口、农业污水排放量、环境保护投资指数、降雨量.提出了严格控制污染源,进一步完善污水管网建设,加大河道综合整治力度,完善河道管理体制的治理对策.

Reason diagnosis of river health based on partial least squares regression

Based on the analysis of the external factors for rive health,the severe multiple correlation among various factors was found.A multiple statistical method,partial least squares(PLS) regression method,was put forward to eliminate the adverse effect.A reason diagnosis model of river health was established.According to the existing conditions of Xinjiangtang River in Haining City,the reason diagnosis case was analyzed.The results indicate that the key factor to have effect on the health of Xinjiangtang is the...