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  本文關(guān)鍵詞：廈門灣及其鄰近海域富營養(yǎng)化特征分析與評價　出處：《國家海洋局第三海洋研究所》2014年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 廈門灣 鄰近海域 富營養(yǎng)化 評價體系

【摘要】：近岸海域富營養(yǎng)化是一個影響社會經(jīng)濟可持續(xù)發(fā)展的海洋生態(tài)環(huán)境問題，具有典型的學科交叉性。本文選取廈門灣及其鄰近海域作為研究對象，，參考國際上主流的第二代富營養(yǎng)化評價體系并結(jié)合我國近海富營養(yǎng)化研究現(xiàn)狀，構(gòu)建符合研究海域生態(tài)環(huán)境特點的富營養(yǎng)化評價體系，并對本海域富營養(yǎng)化特征狀況進行分析與評價，以便海洋管理部門對本研究海域富營養(yǎng)化進行實時監(jiān)控與管理。與此同時，應(yīng)用“NOWPAP”富營養(yǎng)化綜合評價體系與之進行比對，以期能更好地優(yōu)化和完善本文建立的富營養(yǎng)化評價體系�；谏鲜鏊枷�，本文的主要結(jié)論有： (1)2013年研究海域DIN平均含量總體較高，除8月份以外，其它月份均超過第四類海水水質(zhì)標準；研究區(qū)內(nèi)DIP平均含量同樣除8月份以外均超過第四類海水水質(zhì)標準，研究區(qū)內(nèi)COD和DO平均含量均處于一類海水水質(zhì)標準，Chla平均含量除8月份較高以外，其他月份相對較低。 (2)近30年來，研究海域DIN、DIP平均含量變化趨勢均呈不同程度的上升趨勢，與20世紀末期相比，西海域、九龍江口、東部海域、同安灣內(nèi)水體DIN平均含量分別增加了2.98倍、4.54倍、1.57倍以及4.29倍；DIP平均含量分別增加了2.07倍、1.71倍、1.31倍以及3.00倍。 (3)構(gòu)建符合本研究區(qū)的多參數(shù)富營養(yǎng)化評價體系，并應(yīng)用其對本研究海域富營養(yǎng)化狀況進行分析與評價，評價結(jié)果表明：本研究海域水體富營養(yǎng)化壓力等級為“中高”級，富營養(yǎng)化狀態(tài)評價等級為“中”級，富營養(yǎng)化趨勢評價等級為“中”級，其綜合富營養(yǎng)化評價等級為“中”級(2－3－3)。 (4)應(yīng)用NOWPAP富營養(yǎng)化綜合評價體系對本研究海域進行評價，評價結(jié)果表明：西海域內(nèi)四類評價指標的評價結(jié)果為“HI、HD、LN、LN”；九龍江口內(nèi)四類評價指標的評價結(jié)果為“HI、LN、LN、LN”；同安灣內(nèi)四類評價指標的評價結(jié)果為“HN、HI、LN、LN”；南部海域內(nèi)四類評價指標的評價結(jié)果為“HD、LN、LN、LN”；東部海域內(nèi)四類評價指標的評價結(jié)果為“HN、LI、LN、LN”；大嶝海域內(nèi)四類評價指標的評價結(jié)果為“LI、LN、LN、LN”。
[Abstract]:Eutrophication in coastal waters is a problem of marine ecological environment which affects the sustainable development of social economy and has a typical interdisciplinary nature. This paper selects Xiamen Bay and its adjacent sea area as the research object. Referring to the international mainstream of the second generation eutrophication evaluation system and combined with the status quo of offshore eutrophication research in China, the eutrophication evaluation system which accords with the characteristics of the ecological environment in the study area is constructed. And the eutrophication characteristics of the sea area are analyzed and evaluated, so that the marine management department can monitor and manage the eutrophication in real time. The comprehensive evaluation system of "NOWPAP" eutrophication is compared with it in order to optimize and perfect the eutrophication evaluation system established in this paper. Based on the above ideas, the main conclusions of this paper are as follows: (1) the average content of DIN in the study area in 2013 was higher than that in other months except August, and the water quality standards of 4th kinds of seawater were exceeded in other months. The average content of DIP in the study area also exceeded 4th kinds of seawater water quality standards except in August, and the average contents of COD and do in the study area were all in the first class seawater water quality standard. The average Chla content was relatively low in other months except August. (2) in the last 30 years, the average dip content in the studied sea areas showed an increasing trend to varying degrees, compared with the end of 20th century, the west sea area, the Jiulong River Estuary and the eastern sea area. In Tongan Bay, the average content of DIN increased by 2.98 times, 4.54 times and 4.29 times, respectively. The average content of DIP increased 2.07 times, 1.71 times, 1.31 times and 3.00 times, respectively. 3) to construct a multi-parameter eutrophication evaluation system in accordance with the study area, and use it to analyze and evaluate the eutrophication status of the study area. The results show that the eutrophication pressure grade is "medium" grade, eutrophication status evaluation grade is "medium" grade, eutrophication trend evaluation grade is "medium" grade. Its comprehensive eutrophication evaluation grade is "middle" grade 2-3-3. (4) the NOWPAP eutrophication comprehensive evaluation system was applied to evaluate the study area. The evaluation results showed that the evaluation results of four kinds of evaluation indexes in the West Sea region were "HIHD-HDN LNN LN"; The evaluation results of four kinds of evaluation indexes in Jiulong River Estuary are "HILNN LNN LN"; The evaluation results of four kinds of evaluation indexes in Tongan Bay are "HNNHHIHYLNNNU LN"; The evaluation results of the four kinds of evaluation indexes in the southern sea area are "HDLN LNU LN"; The evaluation results of the four kinds of evaluation indexes in the eastern sea area are "HNN LILI LNU LN"; The evaluation results of four kinds of evaluation indexes in Dadeng sea area are "LI LNN LNU LN".
【學位授予單位】：國家海洋局第三海洋研究所
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：X55;X824

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