本文選題：南黃海 + 東海北部��； 參考：《中國海洋大學》2014年碩士論文

【摘要】：本文利用國家重點基礎研究發(fā)展（973）項目“海洋環(huán)境變化與水母暴發(fā)的相互作用”于2011年至2013年開展的7個航次調(diào)查獲得的溫度、鹽度、營養(yǎng)鹽資料開展針對春季、夏季和秋季的南黃海及東海北部海域的環(huán)流狀況及營養(yǎng)鹽分布等問題的研究。 獲得主要結論如下： 1.南黃海及東海北部海域各項營養(yǎng)鹽含量分布整體表現(xiàn)為近岸高、遠海低。營養(yǎng)鹽分布具有明顯季節(jié)特征。春季，表、底層營養(yǎng)鹽含量差距不大。夏季，表層營養(yǎng)鹽含量降低，并在南黃海中部底層出現(xiàn)營養(yǎng)鹽高值區(qū)域。磷酸鹽及硅酸鹽在浙閩外海深層出現(xiàn)濃度高值區(qū)域。秋季，各營養(yǎng)鹽高值區(qū)仍然存在，但分布范圍及強度發(fā)生改變。不同季節(jié)硝酸鹽均是DIN的主要組成部分，其次為氨氮，亞硝酸鹽比重最低。硝酸鹽含量最高值出現(xiàn)在夏季，顯著高于春、秋季節(jié)，氨氮含量按季節(jié)排列由大到小依次為夏季、秋季、春季。 2.各營養(yǎng)鹽受水文環(huán)流影響程度不同。各營養(yǎng)鹽濃度均受長江沖淡水及黃海冷水團強烈影響。此外，DIN高值區(qū)受蘇北沿岸流影響顯著，，磷酸鹽高值區(qū)受臺灣暖流前緣水重要影響。長江沖淡水、臺灣暖流、蘇北沿岸流對近岸海域影響顯著，黃海冷水團對南黃海中部深層海域影響強烈。 3.PN斷面營養(yǎng)鹽分布亦具有明顯的季節(jié)變化。春季，斷面營養(yǎng)鹽含量較高。夏、秋季節(jié)，表層營養(yǎng)鹽出現(xiàn)低值區(qū)域，隨深度增加，營養(yǎng)鹽含量逐漸上升，出現(xiàn)明顯的營養(yǎng)鹽躍層。躍層位置及強度與長江沖淡水及臺灣暖流水有密切關系。 4.E斷面營養(yǎng)鹽分布具有明顯的季節(jié)變化。調(diào)查時間內(nèi)，斷面整體呈現(xiàn)為表層含量低，底層含量高。春季，斷面底層存在兩個營養(yǎng)鹽高值區(qū)。夏、秋季節(jié)，底層水體出現(xiàn)明顯高營養(yǎng)鹽區(qū)域，夏季，高值區(qū)域面積達到最大。營養(yǎng)鹽分布與黃海冷水團等水文環(huán)流特征一致。 5.水體層化、垂向混合作用影響調(diào)查斷面營養(yǎng)鹽分布。營養(yǎng)鹽分布季節(jié)變化與水體層化強弱及位置變化具有良好對應關系。
[Abstract]:In this paper, the temperature, salinity and nutrient data obtained from 7 cruising surveys conducted from 2011 to 2013 under the National key basic Research Development Project "interaction between Marine Environment change and Jellyfish outbreak" were carried out in spring. Studies on the circulation and nutrient salt distribution of South Huang Hai and the northern waters of the East China Sea in summer and autumn. The main conclusions are as follows: 1. The distribution of nutrient content in the south Huang Hai and the northern sea area of the East China Sea was high near shore and low in far sea. The distribution of nutrient has obvious seasonal characteristics. In spring, the difference of nutrient content in bottom layer is not big. In summer, the nutrient content of the surface layer decreased, and the high value area of nutrient salt appeared in the bottom layer of the middle part of South Huang Hai. Phosphate and silicate are found in high concentration areas in the deep sea off Zhejiang and Fujian. In autumn, the high value regions of nutrients still exist, but the distribution range and intensity change. Nitrate is the main component of DIN in different seasons, followed by ammonia nitrogen and nitrite. The highest nitrate content appeared in summer, which was significantly higher than that in spring and autumn. The order of ammonia nitrogen content was summer, autumn and spring. 2. Each nutrient is affected by hydrological circulation to different extent. All nutrient concentrations were strongly affected by the Yangtze River diluted water and Huang Hai cold water mass. In addition, the high value area of tin is significantly affected by the coastal current in northern Jiangsu, and the high value of phosphate is influenced by the leading water of Taiwan warm current. The Yangtze River diluted water, the Taiwan warm current, the northern Jiangsu coastal current have a significant influence on the coastal waters, and Huang Hai cold water mass has a strong influence on the deep sea area in the central part of South Huang Hai. The distribution of nutrient in 3.PN section also showed obvious seasonal variation. In spring, the nutrient content of cross section was higher. In summer and autumn, there were low value areas in the surface layer of nutrient salt. With the increase of depth, the content of nutrient salt gradually increased, and obvious nutrient cline appeared. The position and strength of the cline are closely related to the diluted water of the Yangtze River and the warm current of Taiwan. 4. The distribution of nutrient in section E has obvious seasonal variation. During the investigation time, the whole section showed low content of surface layer and high content of bottom layer. In spring, there are two high value areas of nutrient in bottom layer of cross section. In summer and autumn, there are obvious high nutrient areas in the bottom water, and the area of high value areas reaches the maximum in summer. The distribution of nutrients is consistent with the hydrological circulation characteristics of Huang Hai cold water mass. 5. Stratification and vertical mixing influence the distribution of nutrients in the investigation section. The seasonal variation of nutrient distribution has a good correspondence with the stratification intensity and position change of water body.
【學位授予單位】：中國海洋大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：P734

【參考文獻】

相關期刊論文 前10條

1 蘇育嵩;黃東海地理環(huán)境概況、環(huán)流系統(tǒng)與中心漁場[J];山東海洋學院學報;1986年S1期

2 翁學傳,王從敏;關于臺灣暖流水的研究[J];青島海洋大學學報;1989年S1期

3 鮑獻文;李娜;姚志剛;吳德星;;北黃海溫鹽分布季節(jié)變化特征分析[J];中國海洋大學學報(自然科學版);2009年04期

4 韋欽勝;劉璐;戰(zhàn)閏;魏修華;臧家業(yè);;夏季南黃海海水化學要素的分布特征及影響因素[J];中國海洋大學學報(自然科學版);2010年01期

5 羅義勇,俞光耀;風和臺灣暖流引起東海沿岸上升流數(shù)值計算[J];青島海洋大學學報(自然科學版);1998年04期

6 王榮,高尚武,王克,左濤;冬季黃海暖流的浮游動物指示[J];水產(chǎn)學報;2003年S1期

7 趙保仁;長江沖淡水的轉向機制問題[J];海洋學報(中文版);1991年05期

8 鄒娥梅,郭炳火,湯毓祥,李載學,熊學軍,曾憲模;秋季南黃海水文特征及海水的混合與交換[J];海洋學報(中文版);1999年05期

9 王保棟,王桂云,鄭昌洙,梁東范;南黃海營養(yǎng)鹽的平面分布及橫向輸運[J];海洋學報(中文版);1999年06期

10 湯毓祥,鄒娥梅,李興宰,李載學;南黃海環(huán)流的若干特征[J];海洋學報(中文版);2000年01期

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