基于三角隨機(jī)模擬和延拓盲數(shù)模型的水環(huán)境污染評(píng)價(jià)
[Abstract]:The water environment resource is the indispensable material foundation for the survival and development of human beings and all living things. With the increasing level of economic and social development in China, the pollution of water environment is becoming more and more serious, especially the pollution of heavy metals in rivers and eutrophication of lakes. As a basic work, water environmental assessment has become the premise and basis for the prevention and control of water pollution, and plays an important role and significance in the protection of water resources and the improvement of water environment. At present, there are many methods for evaluating heavy metal pollution and lake eutrophication in river sediments at home and abroad, but most of them are focused on deterministic or uncertain factors in the system. Because of the uncertainty of various objective and subjective knowledge, the water environment is a complex system with many uncertainties, such as randomness, fuzziness, grey and unascertained, which coexist or cross exist, and the source of information is uncertain. Types and properties are more complex and changeable. If this information is ignored in the evaluation process, it is likely to result in errors and decision-making errors. Based on the uncertain information such as randomness, fuzziness, grey and unascertained information in water environment system, this paper combines triangular fuzzy number with random simulation model, and combines triangular fuzzy number with blind number, respectively. The triangular stochastic simulation model and continuation blind number model are established and applied to the risk assessment of heavy metal pollution in Xiangjiang River and eutrophication of Dongting Lake respectively. The uncertain factors are analyzed and studied. In order to reduce the uncertain information existing in the evaluation process, so as to represent the pollution situation of the water environment in the evaluation area more objectively and realistically, and to provide more comprehensive, reasonable and true information for the prevention and control of the region. It provides a new idea and method for water environment assessment. In this paper, the evaluation model of sediment heavy metal pollution based on triangular stochastic simulation and the lake eutrophication comprehensive nutrition evaluation model based on extension blind number are compared with the conventional deterministic methods. The two models can get the corresponding interval value of heavy metal pollution index and comprehensive nutrition index, and their corresponding membership degree, so as to get their comprehensive pollution level. And can judge the relevant areas with the trend of deterioration, to a certain extent reduce the uncertainty in the evaluation process, can provide more reliable data information for decision makers, have better practicability and operability, more comprehensive, It truly reflects the pollution situation of the water body, thus taking the seriously polluted areas as the focus of monitoring and control object, and carrying out targeted prevention and control.
【學(xué)位授予單位】:湖南大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:X824
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 黃代中;萬(wàn)群;李利強(qiáng);汪鐵;盧少勇;歐伏平;田琪;;洞庭湖近20年水質(zhì)與富營(yíng)養(yǎng)化狀態(tài)變化[J];環(huán)境科學(xué)研究;2013年01期
2 張祥;黃堅(jiān);馬慧雪;;湘江長(zhǎng)沙段沉積物中重金屬污染評(píng)價(jià)[J];廣州化工;2012年23期
3 馬懿;周健;黃治久;楊云雷;王艷;;內(nèi)梅羅污染指數(shù)法綜合評(píng)價(jià)自貢市釜溪河水質(zhì)現(xiàn)狀[J];安徽農(nóng)業(yè)科學(xué);2011年25期
4 鐘振宇;陳燦;;洞庭湖水質(zhì)及富營(yíng)養(yǎng)狀態(tài)評(píng)價(jià)[J];環(huán)境科學(xué)與管理;2011年07期
5 陳麗莎;陳志良;肖舉強(qiáng);彭曉春;;湘江流域長(zhǎng)株潭段底泥重金屬污染評(píng)價(jià)[J];安徽農(nóng)業(yè)科學(xué);2011年08期
6 王靜;董肖麗;;模糊評(píng)價(jià)中最大隸屬度原則的改進(jìn)[J];河北水利;2011年02期
7 張建龍;解建倉(cāng);汪妮;孫博;申瑜;;再生水回用的改進(jìn)健康風(fēng)險(xiǎn)評(píng)價(jià)及土壤承載能力研究[J];水土保持學(xué)報(bào);2010年02期
8 王海東;方鳳滿;謝宏芳;;中國(guó)水體重金屬污染研究現(xiàn)狀與展望[J];廣東微量元素科學(xué);2010年01期
9 陳光怡;丁莉;張寅;亓萌;;地下水開(kāi)采可靠性的隨機(jī)模擬與三角模糊數(shù)耦合模型[J];安徽建筑工業(yè)學(xué)院學(xué)報(bào)(自然科學(xué)版);2009年06期
10 梁婕;謝更新;曾光明;郭生練;李曉東;石林;杜春艷;蔡青;;基于隨機(jī)-模糊模型的地下水污染風(fēng)險(xiǎn)評(píng)價(jià)[J];湖南大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年06期
相關(guān)博士學(xué)位論文 前3條
1 楊龍;密云水庫(kù)富營(yíng)養(yǎng)化閾值與外源磷素輸入響應(yīng)關(guān)系研究[D];首都師范大學(xué);2009年
2 李如忠;地質(zhì)環(huán)境與巢湖富營(yíng)養(yǎng)化控制機(jī)制研究[D];合肥工業(yè)大學(xué);2007年
3 李如忠;河流水環(huán)境系統(tǒng)不確定性問(wèn)題研究[D];河海大學(xué);2004年
相關(guān)碩士學(xué)位論文 前10條
1 唐曉嬌;基于盲數(shù)理論的水體沉積物重金屬污染評(píng)價(jià)模型[D];湖南大學(xué);2013年
2 陳書弈;湘江流域生態(tài)補(bǔ)償問(wèn)題研究[D];中南大學(xué);2013年
3 肖敏;湘江長(zhǎng)沙—湘潭段河床沉積物重金屬污染評(píng)價(jià)[D];湖南師范大學(xué);2012年
4 樊夢(mèng)佳;基于三角模糊數(shù)的河流沉積物重金屬評(píng)價(jià)研究[D];湖南大學(xué);2011年
5 祝慧娜;基于區(qū)間數(shù)的水環(huán)境健康風(fēng)險(xiǎn)模糊綜合評(píng)價(jià)[D];湖南大學(xué);2009年
6 羅輯;城市河流生態(tài)系統(tǒng)健康評(píng)價(jià)研究[D];湖南大學(xué);2009年
7 彭順珍;湘江流域水環(huán)境評(píng)價(jià)與防治研究[D];湖南師范大學(xué);2008年
8 齊姍姍;河流水環(huán)境不確定性規(guī)劃模型的研究與應(yīng)用[D];吉林大學(xué);2007年
9 王曉麗;河口沉積物采樣代表性研究[D];中國(guó)地質(zhì)大學(xué)(北京);2006年
10 金暢;蒙特卡洛方法中隨機(jī)數(shù)發(fā)生器和隨機(jī)抽樣方法的研究[D];大連理工大學(xué);2006年
,本文編號(hào):2429543
本文鏈接:http://sikaile.net/kejilunwen/huanjinggongchenglunwen/2429543.html