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基于多元回归理论的太湖湖泛预警模型研究   总被引:1,自引:0,他引:1       下载免费PDF全文
Feculent and anaerobic water aggregation (FAWA) is a type of specific environmental disaster with characteristics of occurring abruptly,lasting in short duration,and causing serious consequences on the environment and ecosystems.Experiments choosing algal density as the investigated object were carried out to analyze the parameters using data analysis software SPSS,including the water quality,temperature,and algal density,in four monitoring sites of the Yixing part where FAWA happened historically.An early warning model using the multiple regression theory was constructed based on the algal cell density together with weather conditions and related algal density threshold when FAWA happened in the past years.Based on the current weather data and real time water quality parameters in the monitoring site,the model could be used to evaluate the risk grade of FAWA occurring in the monitoring region.  相似文献
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于2016年对宜兴市大气挥发性有机物(VOCs)和臭氧(O3)的变化特征进行了分析.结果表明,宜兴市O3年均值为62.92 μg/m3 ,其中冬季值最低(31.19 μg/m3),夏季值最高(94.96 μg/m3).φ(VOCs)为(11.00~42.45)×10-9,其中丙酮(12.7%)、乙酸乙酯(8.8%)和丙烯(3.3%)等在VOCs中占比位于前3位.各站点φ(甲苯)/φ(苯)>2,全年的φ(甲苯)/φ(苯)> φ(乙苯)/φ(苯)>φ(间、对二甲苯)/φ(苯).指出VOCs主要来源为有机溶剂和道路交通,并受到一定的外来输送影响.各站点φ(VOCs)/φ(NOx)为0.94~2.44,O3处于VOCs敏感区.  相似文献
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