夏季黄海不同水团溶解有机物分布特征

王艺超; 刘小艳; 宋贵生; XieHuixiang

doi:10.3969/j.issn.0253-4193.2019.12.014

夏季黄海不同水团溶解有机物分布特征

doi: 10.3969/j.issn.0253-4193.2019.12.014

王艺超^1,,
刘小艳¹,
宋贵生^2, ,,
XieHuixiang^{1, 3}

1.
天津科技大学海洋与环境学院，天津 300457
2.
天津大学海洋科学与技术学院，天津 300072
3.
加拿大魁北克大学里姆斯基分校海洋科学研究所，魁北克里姆斯基 G5L 3A1

基金项目: 国家科技部重点研发计划（2016YFC1401602）；国家自然科学基金（41606098）；天津市自然科学基金（16JCQNJC08000）。

详细信息

作者简介:
王艺超（1993—），男，四川省盐源县人，主要研究方向为海洋有机生物地球化学。E-mail：yichao.wang@outlook.com

通讯作者:
宋贵生，副教授，主要从事海洋有机生物地球化学与近海低氧、酸化形成机制研究。E-mail：guisheng.song@tju.edu.cn

中图分类号: P734.5
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出版历程
- 收稿日期: 2018-12-25
- 修回日期: 2019-03-01
- 网络出版日期: 2021-04-21
- 刊出日期: 2019-12-25

Distribution of dissolved organic matter in different water masses in the Yellow Sea in summer

1.
College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China
2.
School of Marine Science and Technology, Tianjin University, Tianjin 300072, China
3.
Institute of Marine Sciences of Rimouski, University of Quebec at Rimouski, Quebec G5L 3A1, Canada

摘要

摘要: 依据2017年8—9月对黄海海域溶解有机物(DOM)的调查，探讨了夏季黄海海水中溶解有机碳(DOC)和有色溶解有机物(CDOM)的空间分布特征。在表层海水中，受陆源影响较大的近岸海域CDOM含量相对较高，北黄海冷水团区域由于水产养殖的饵料引起DOC浓度升高，且该部分DOC以无色为主。DOC浓度随深度逐渐降低，而CDOM逐渐升高，该特征在冷水团区域更为显著，因此DOC和CDOM在冷水团区域的表底差异远大于浅水区的非冷水团区域。陆源输入和初级生产是引起表层DOC升高的主要原因，而光漂白则引起CDOM降低，同时光漂白还导致表层水体中CDOM分子量和芳香性低于底层。底层溶解氧饱和度在冷水团为80%～93%，均表现为弱不饱和状态。层化不仅阻碍了O₂向底层水体输送，还抑制了DOC和CDOM的垂向混合，这是引起冷水团区域表底层DOC和CDOM差异较大的主要原因。
- 黄海冷水团 /
- 缺氧 /
- 溶解有机碳 /
- 有色溶解有机物
Abstract: Based on the investigation of dissolved organic matter (DOM) in the Yellow Sea from August to September 2017, the spatial distributions of dissolved organic carbon (DOC) and chromophoric dissolved organic matter (CDOM) were studied in the Yellow Sea. In surface seawater, CDOM was higher in the nearshore water, which might be caused by the relatively significant influence by the river input, while colorless DOC concentration in the north Yellow Sea Cold Water (YSCW) area was enhanced by aquaculture. The DOC concentration decreased along depth in the water column, but an inverse trend for CDOM, especially in the YSCW area. Terrestrial DOC input and primary production were mainly responsible for the surface DOC enhancement, while photobleaching induced the decrease of CDOM. Additionally, photobleaching also decreased the molecular weight and aromaticity of CDOM in surface water. In the YSCW, O₂ was slightly unsaturated, with the saturation degree of 80%–93%. In this area, strong stratification prevented the vertical diffusion of O₂ to bottom water. Additionally, stratification could also restrain the vertical mixing of DOC and CDOM, which was mainly responsible for the large difference of DOC and CDOM between surface and bottom waters.
- Yellow Sea Cold Water /
- low oxygen /
- dissolved organic carbon /
- chromophoric dissolved organic matter

HTML全文

图 1 2017年夏季黄海海区采样站位与水团分布（站位详细信息见表1）

红色虚线表示渤海、北黄海、南黄海以及东海之间的分界线，蓝色实线区域显示黄海冷水团区域。字母缩写分别代表: 渤海沿岸流(BSCoW)、黄海沿岸流(YSCoW)、朝鲜沿岸流(WKCoW)、长江冲淡水(CDW)、台湾暖流(TWC)、黑潮(KC)、对马暖流(TWW)

Fig. 1 Map of sampling stations and current system in the Yellow Sea in summer 2017 (see Tab. 1 for detailed sampling information)

The red dashed lines represent the boundaries between different geographic areas as indicated in the map, while the blue solid lines show the Yellow Sea Cold Water Mass areas. Currents are: the Bohai Sea Coastal Water (BSCoW), the Yellow Sea Coastal Water (YSCoW), the Western Korea Coastal Water (WKCoW), the Changjiang Diluted Water (CDW), the Taiwan Warm Current (TWC), the Kuroshi Current (KC), and the Tsushima Warm Water (TWW)

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图 2 2017年夏季黄海表层与底层DO%、DOC、a₃₃₀、E₂/E₃和SUVA₂₅₄平均值

误差棒表示一个标准偏差

Fig. 2 Mean values of DO%, DOC, a₃₃₀, E₂/E₃, and SUVA₂₅₄ in surface and bottom waters in the Yellow Sea in summer 2017

Error bars indicate one standard deviation

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图 3 2017年夏季黄海典型站位温度、盐度、DO%、DOC、a₃₃₀、E₂/E₃和SUVA₂₅₄垂直分布

H09、B30：南、北黄海典型冷水团站位；H21、B25：南、北黄海典型非冷水团站位

Fig. 3 Vertical distributions of temperature, salinity, DO%, DOC, a₃₃₀, E₂/E₃ and SUVA₂₅₄ at typical stations in the Yellow Sea in summer 2017

Stations H09 and B30 are located inside the South and North Yellow Sea Cold Water Masses, and stations H21 and B25 are located outside the South and North Yellow Sea Cold Water Masses

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图 4 2017年夏季黄海底层AOU以及表底层DOC、a₃₃₀、Δ(E₂/E₃)和SUVA₂₅₄差值

ΔDOC、Δ(E₂/E₃)为表层的值减去底层的值，Δa₃₃₀、ΔSUVA₂₅₄为底层的值减去表层的值

Fig. 4 AOU in bottom wate and differences in DOC, a₃₃₀, Δ(E₂/E₃), and SUVA₂₅₄ between surface and bottom waters in the Yellow Sea in summer 2017

ΔDOC and Δ(E₂/E₃) are surface water values minus bottom water values，while Δa₃₃₀ and ΔSUVA₂₅₄ are bottom water values minus surface water values

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表 1 2017年夏季黄海海区各站位采样时间、经纬度、水深以及采样深度

Tab. 1 Sampling date, coordinates, water depth and sampling depths of each station in the Yellow Sea in summer 2017

站位	调查时间	经纬度	水深/m	采样深度/m
南黄海
H01	8月29日	35.999°N, 121.009°E	30.4	3.0，14.9，24.8
H03	8月29日	36.000°N, 121.668°E	36.0	3.9，11.9，19.8，32.8
H05	8月30日	35.997°N, 122.327°E	52.0	3.6，11.9，20.9，48.6
H07^*	8月31日	36.002°N, 122.999°E	71.0	4.0，22.8，34.7，68.0
H09^*	9月1日	36.002°N, 124.000°E	76.0	4.0，19.8，31.8，73.4
H10^*	9月2日	35.000°N, 123.996°E	80.0	4.0，19.9，39.7，78.3
H12^*	9月2日	35.001°N, 122.994°E	73.0	4.1，19.8，39.7，71.2
H14^*	9月2日	34.999°N, 122.337°E	60.5	4.0，19.9，30.8，57.4
H16	9月2日	34.998°N, 121.663°E	45.0	3.8，15.9，29.7，42.8
H18	9月3日	35.000°N, 120.998°E	36.5	4.0，10.0，17.8，34.6
H19	9月3日	34.001°N, 121.402°E	17.5	2.8，9.0，15.8
H21	9月3日	34.006°N, 122.000°E	18.5	2.9，8.9，16.9
H24	9月3日	34.000°N, 123.081°E	68.0	3.0，14.9，27.8，66.2
H26^*	9月4日	34.002°N, 124.001°E	78.5	3.0，14.8，29.7，77.2
H27	9月4日	33.005°N, 124.001°E	50.0	3.6，14.9，29.7，47.2
H29	9月4日	33.000°N, 122.999°E	32.0	4.0，12.9，26.8
H32	9月4日	33.005°N, 121.999°E	18.0	3.0，8.9，14.9
B01^*	9月9日	36.466°N, 122.962°E	60.0	3.0，13.9，29.8，58.4
B03	9月9日	36.823°N, 122.601°E	36.0	2.7，17.9，33.6
B05	9月9日	36.998°N, 122.876°E	30.0	2.8，13.9，27.5
B07^*	9月9日	37.001°N, 123.426°E	72.0	3.2，21.8，35.8，70.1
B09^*	9月9日	36.999°N, 124.001°E	75.0	3.1，20.8，37.7，72.3
BS01^*	9月10日	37.394°N, 123.978°E	70.0	2.9，21.8，35.7，68.3
BS03^*	9月10日	37.401°N, 123.372°E	75.0	3.1，25.8，36.8，69.4
BS05	9月10日	37.400°N, 122.833°E	37.0	3.0，19.9，33.7
北黄海
B12	9月10日	37.721°N, 122.952°E	65.0	3.1，22.9，32.8，63.1
B15	9月10日	38.440°N, 123.482°E	66.0	2.7，19.9，33.8，63.2
B17	9月11日	38.966°N, 123.911°E	53.5	3.1，14.9，27.8，51.4
B19	9月11日	39.220°N, 123.602°E	36.0	2.9，18.9，34.4
B21	9月11日	38.862°N, 123.003°E	52.4	1.9，11.9，22.9，49.6
B23^*	9月11日	38.222°N, 122.738°E	52.0	4.0，12.0，25.8，49.4
B25	9月11日	37.693°N, 122.472°E	28.0	3.1，14.9，26.4
B26	9月12日	37.699°N, 122.003°E	23.0	3.1，11.9，20.9

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表 2 2017年夏季黄海海区温度、盐度、溶解氧饱和度的变化范围及平均值

Tab. 2 Ranges and means of temperature, salinity, and dissolved oxygen saturation degree in the Yellow Sea in summer 2017

层次	海区	区域	水温/℃	盐度	DO/%
表层	南黄海	冷水团	24.1～25.9	31.3～32.0	111%～114%
		n=11	(25.1±0.7)	(31.7±0.2)	(112%±1%)
		非冷水团	23.1～27.1	30.0～31.7	100%～123%
		n=14	(24.9±1.1)	(31.3±0.5)	(112%±5%)
	北黄海	冷水团	24.3～24.6	31.5～31.8	112%～114%
		n=3	(24.5±0.2)	(31.7±0.1)	(113%±1%)
		非冷水团	22.6～24.9	31.5～31.9	109%～132%
		n=10	(23.9±0.7)	(31.6±0.1)	(115%±6%)
底层	南黄海	冷水团	7.4～9.6	32.2～32.9	81%～93%
		n=11	(8.4±0.5)	(32.4±0.2)	(86%±5%)
		非冷水团	10.4～27.1	31.1～32.9	15%～113%
		n=14	(19.0±5.6)	(31.9±0.5)	(90%±23%)
	北黄海	冷水团	6.6～9.0	32.2～32.3	80%～91%
		n=3	(7.9±1.0)	(32.3±0.1)	(86%±5%)
		非冷水团	10.4～23.7	31.5～32.2	85%～108%
		n=10	(18.5±4.9)	(31.9±0.3)	(97%±8%)
注：n表示采样点数量；括号内数据代表平均值±标准偏差。

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