Factor Analysis on Quantity of Discharged Pollutants in Wastewater in Major Cities

The research performed statistical analysis on 186 data concerning the amount of discharged industrial wastewater, the amount of oxygen demand of industrial wastewater, the amount of ammonia and nitrogen discharged from industries, the amount of urban discharged domestic sewage, the amount of daily life chemical oxygen demand, and the amount of domestic ammonia and nitrogen to explore source of pollutants from wastewater and guarantee urban water quality.Factor analysis was then performed with SPSS according to discharge quantity of pollutants. The results should that the major pollutants are from domestic sewage it is expected scientific suggestions be proposed on water quality in our country.

Factor Analysis on Air Quality of Key Environmental Protection Cities

Statistical analysis was performed on 678 data of 6 key indices on air pollution in 113 key cities on basis of China Statistical Yearbook in 2015.Besides,factor analysis was then performed with SPSS17.0 to make overall assessment on air quality in different cities.The results showed that air pollution is quite severe in varying degrees in different cities and the research is expected to provide references for air pollution control in key environment protection cities.

聚类主成分分析在城市废气中污染物排放量分析中的应用

本文对《中国统计年鉴—2014》中31个省、市、自治区6种主要污染物排放量工业二氧化硫、工业氮氧化物、工业烟(粉)尘、生活二氧化硫、生活氮氧化物、生活烟尘共186个数据进行统计分析。根据污染物的排放量,利用软件进行聚类分析,主成分分析将31个地区的主要污染物的排放量进行分类,具体结果见表二和表三,找出影响城市空气质量的最主要的污染物。以此期望对改善我国主要城市的空气质量给出合理的建议。

我国国民经济发展与科技发展的典型相关分析

以我国31个重点城市为主要研究对象,借助软件应用典型相关分析法来探讨国民经济发展状况和科技发展的关系。研究结果表明国民经济发展中第二产业地区生产总值和资本形成总额起主导作用,科技发展中经费和人员全时当量起主导作用。国民经济的发展与科技发展呈正相关关系。因此,注重经济发展的同时应加大经济在科技发展方面的投入,使经济更好的促进科技的发展,同时,让先进的科技引领经济更快的进步。