本文選題：赤潮　切入點(diǎn)：控制因子　出處：《中國海洋大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年12期 　論文類型：期刊論文

【摘要】：本文以渤海為例,建立了赤潮發(fā)生關(guān)鍵控制因子的識別方法,主要包括文獻(xiàn)因子檢索匯總、備選因子篩選、備選因子關(guān)聯(lián)性分析、影響因子獨(dú)立性、變動性分析、關(guān)鍵控制因子的識別等環(huán)節(jié)。通過對1990—2009年20年間與渤海赤潮發(fā)生相關(guān)要素進(jìn)行關(guān)聯(lián)性分析,熵值法和變異系數(shù)法分析要素的波動性,通過靈敏度分析,將主成分分析和層次分析結(jié)合起來確定關(guān)鍵控制要素。結(jié)果顯示,有14個(gè)要素累計(jì)貢獻(xiàn)率達(dá)到了90%,命名為備選因素�；跈M向和縱向關(guān)聯(lián)性分析,保證了有9個(gè)可以量化的要素,通過變異性系數(shù)和熵值法計(jì)算要素的權(quán)重,表明N/P、DIN、DIP、COD和降水具有較強(qiáng)的信息分辨能力�；谥鞒煞址治龊蛯哟畏治龅慕Y(jié)果,渤海赤潮發(fā)生的關(guān)鍵控制要素主要是DIN、DIP和N/P。它表明在渤海海域赤潮頻發(fā)的主要原因可能與養(yǎng)分的輸入,尤其是過量的氮養(yǎng)分輸入所造成的營養(yǎng)結(jié)構(gòu)失衡有關(guān)。因此,一些措施例如增加控制污染,減少陸源養(yǎng)分輸入和減輕水體富營養(yǎng)化程度為渤海赤潮的治理和預(yù)測提供了依據(jù)。
[Abstract]:In this paper, taking the Bohai Sea as an example, the identification method of the key control factors for the occurrence of red tide is established, which mainly includes literature factor retrieval summary, alternative factor selection, alternative factor correlation analysis, influence factor independence, variability analysis, etc. Identification of key control factors. Through the correlation analysis between 1990 and 2009 and the occurrence of red tide in Bohai Sea, entropy method and coefficient of variation method are used to analyze the volatility of the elements, and the sensitivity analysis is used. Combining principal component analysis and hierarchical analysis to identify key control elements. The results show that 14 elements have cumulative contribution rates of 90, named as alternatives, based on horizontal and vertical correlation analysis, Nine quantifiable elements are guaranteed. The coefficient of variability and the entropy method are used to calculate the weights of the elements. It is shown that N / P DINDINDIPCOD and precipitation have strong information resolution ability, based on the results of principal component analysis and hierarchical analysis. The key controlling factors of red tide in Bohai Sea are DINDIP and N / P. it indicates that the main cause of red tide frequency in Bohai Sea is probably related to nutrient input, especially the imbalance of nutrient structure caused by excessive nitrogen input. Some measures, such as increasing pollution control, reducing terrestrial nutrient input and reducing water eutrophication, provide basis for the control and prediction of red tide in the Bohai Sea.
【作者單位】： 中國海洋大學(xué)海洋化學(xué)理論與工程技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室化學(xué)化工學(xué)院;南京大學(xué)生命分析化學(xué)國家重點(diǎn)實(shí)驗(yàn)室化學(xué)化工學(xué)院;
【基金】：國家重點(diǎn)研發(fā)項(xiàng)目(2016YFC1402101) 國家基金委-山東省聯(lián)合基金項(xiàng)目(U1606404) 國家減災(zāi)中心項(xiàng)目:“渤海典型赤潮災(zāi)害預(yù)防及減災(zāi)技術(shù)預(yù)研”資助~~
【分類號】：X55

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