CAJ | 학술논문

针对粤西海域海洋水质评价这一问题，依照GB 3097-1997《国家海水水质标准》建立一个由400个站位组成、每个站位包含13个水质指标信息的假设随机样本，利用逐步判别分析法，在随机样本的13个水质指标中按其对水质分类判别能力的大小进行筛选，最终选出化学需氧量、石油类、镉、总磷、总氮这5个具有显著判别能力的指标，并利用这5个指标建立判别函数及水质分类图版，进而克服水质指标数据引入过多对水质评价模型的不利影响。利用上述水质分类图版对粤西海域2010年40个站位的水质状况进行了评价，对比海洋与渔业环境监测站的水质分类结果，其正确率为95％，说明该水质分类图版具有良好的实际应用效果，可作为解决利用多水质指标信息综合评价海洋水质这一问题的有效方法。
침대월서해역해양수질평개저일문제，의조GB 3097-1997《국가해수수질표준》건립일개유400개참위조성、매개참위포함13개수질지표신식적가설수궤양본，이용축보판별분석법，재수궤양본적13개수질지표중안기대수질분류판별능력적대소진행사선，최종선출화학수양량、석유류、력、총린、총담저5개구유현저판별능력적지표，병이용저5개지표건립판별함수급수질분류도판，진이극복수질지표수거인입과다대수질평개모형적불리영향。이용상술수질분류도판대월서해역2010년40개참위적수질상황진행료평개，대비해양여어업배경감측참적수질분류결과，기정학솔위95％，설명해수질분류도판구유량호적실제응용효과，가작위해결이용다수질지표신식종합평개해양수질저일문제적유효방법。
To evaluate the marine water quality of West Guangdong Prcvince ,China ,an assumptive random sample comprising 400 stations (at each station there are 13 water quality indicators ) is established according to the Na-tional Water Quality Standards (GB 3097-1997) .The 13 indexes are filtered with a stepwise discriminant analysis method in terms of their water quality discriminant ability .Five indicators with distinguishing discriminant ability are picked out .T hey are a chemical oxygen demand ,oil ,cadmium content ,total phosphorus and total nitrogen .A discriminant function and a water quality classification plate are thereafter established with these five indicators . The method avoides introducing too many indicators to have adverse impact on the water quality evaluation model . T he above w ater quality classification plate is applied to evaluating the marine w ater quality of 40 stations in West Guangdong Province in 2010 .Compared with the result provided by Zhanjiang Oceanic and Fishery Environmental Monitoring Station ,it is found that the matching rate of 40 stations in this area is 95% .It indicates that the plate has a good application effect .It can be used as an effective way to evaluate the marine water quality by using multi-indicators .