2016年春季季风转换期的珠江冲淡水分布与生态特征分析*

doi:10.11978/2020107

热带海洋学报 ›› 2021, Vol. 40 ›› Issue (5): 63-71.doi: 10.11978/2020107CSTR: 32234.14.2020107

2016年春季季风转换期的珠江冲淡水分布与生态特征分析^*

帅义萍^1,²(), 陈寅超^1,², 刘子嘉^1,², 葛在名^1,², 马梦真^1,², 张苑芳^1,², 李芊^1,^2,³()

1.热带海洋环境国家重点实验室(中国科学院南海海洋研究所), 广东广州 510301
2.中国科学院大学, 北京 100049
3.南方海洋科学与工程广东省实验室(广州), 广东广州 511458

收稿日期:2020-09-16 修回日期:2021-01-13 出版日期:2021-09-10 发布日期:2021-01-07
通讯作者: 李芊
作者简介:帅义萍(1992—), 女, 湖南省常德市人, 博士研究生, 从事海洋生物地球化学研究。email: shuaiyp@scsio.ac.cn
基金资助:
国家重点研发计划项目(2016YFC0301202);国家重点研发计划项目(2016YFA0601203);国家自然科学基金(41676108);南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项(GML2019ZD0305)

Distribution of Pearl-River diluted water and its ecological characteristics during spring monsoon transitional period in 2016^*

SHUAI Yiping^1,²(), CHEN Yinchao^1,², LIU Zijia^1,², GE Zaiming^1,², MA Mengzhen^1,², ZHANG Yuanfang^1,², LI Qian^1,^2,³()

1. State Key Laboratory of Tropical Oceanography (South China Sea Institute of Oceanology, Chinese Academy of Sciences), Guangzhou 510301, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China

Received:2020-09-16 Revised:2021-01-13 Online:2021-09-10 Published:2021-01-07
Contact: LI Qian
Supported by:
National Key Research and Development Program of China(2016YFC0301202);National Key Research and Development Program of China(2016YFA0601203);National Natural Science Foundation of China(41676108);Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)(GML2019ZD0305)

摘要/Abstract

摘要：

基于2016年4—6月珠江口航次的现场调查资料及卫星数据, 对春季季风转换期的风场分布特征, 冲淡水路径的时空变化情况以及相应的生态响应进行了分析。结果显示珠江口及其临近海域在4—5月表现为过渡性风场, 受冬季风和夏季风的共同作用, 且风向多变。至6月, 冬季风消失, 西南季风控制了整个研究海域, 与此同时珠江径流量逐月增大, 冲淡水的分布特征也随着风场及径流变化发生转变。具体表现为4—5月份冲淡水向粤西沿岸方向扩展, 且在5月流幅更宽, 可达离岸70km处。6月冲淡水向东西两个方向扩展, 向西的冲淡水在河口外受到夏季风场以及背景流场的抑制, 形成以盐度和浊度为特征的锋面; 向东的冲淡水离岸扩展, 在粤东外海形成大面积的羽状流。此外, 珠江口叶绿素和溶解氧的分布主要受冲淡水的影响, 其分布形态与冲淡水路径相似。垂向上, 可观测到珠江口低氧的形成过程, 海水层化, 稳定水柱的形成以及生物分解过程共同导致了珠江口底部的溶解氧较低。浊度的分布主要受径流携带的悬沙影响, 与盐度有很强的负相关性。

关键词: 珠江口, 春季季风转换期, 冲淡水, 溶解氧, 浊度

Abstract:

Based on in situ physical and biological observations and remote sensing data, we analyzed the distribution characteristics of wind, diluted water and its ecological response in the Pearl River Estuary (PRE) during the spring monsoon transitional period (April — June) in 2016. The results showed that non-unidirectional wind prevailed in the PRE and its adjacent area from April to May, and weak southwest monsoon prevailed in June. Meanwhile, the Pearl-River discharge flux increased over time. Influenced by wind and Pearl-River runoff, the diluted water expanded westward alongshore in April and offshore in May, with a maximum distance of more than 70 km away from the coast. The diluted water expanded both eastward and westward in June. The westward diluted water was restricted, and formed an estuarine front with significant salinity and turbidity gradient outside the mouth of the estuary when encountered the southerly monsoon and background currents. The estuarine front extended offshore and formed a large plume in eastward offshore regions. Furthermore, the distribution of fluorescent and oxygen were mainly influenced by diluted water and showed similar patterns. In the vertical direction, the process of hypoxia formation was observed in the PRE. Seawater stratification and the formation of stable water column together with biodegradation process jointly led to low dissolved oxygen at the bottom of the PRE. The distribution of turbidity was mainly influenced by suspended sediments carried by river discharge, and showed strong negative correlation with salinity.

Key words: Pearl River Estuary, spring transitional period of monsoon, diluted water, dissolved oxygen, turbidity

中图分类号:

P735.121

帅义萍, 陈寅超, 刘子嘉, 葛在名, 马梦真, 张苑芳, 李芊. 2016年春季季风转换期的珠江冲淡水分布与生态特征分析^*[J]. 热带海洋学报, 2021, 40(5): 63-71.

SHUAI Yiping, CHEN Yinchao, LIU Zijia, GE Zaiming, MA Mengzhen, ZHANG Yuanfang, LI Qian. Distribution of Pearl-River diluted water and its ecological characteristics during spring monsoon transitional period in 2016^*[J]. Journal of Tropical Oceanography, 2021, 40(5): 63-71.

图/表 7

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参考文献 29

[1]	胡辉, 胡方西, 1995. 长江口的水系和锋面[J]. 中国水产科学, 2(1):81-90.
	HU HUI, HU FANGXI, 1995. Water types and frontal surface in the Changjiang Estuary[J]. Journal of Fishery Sciences of China, 2(1):81-90 (in Chinese with English abstract).
[2]	贾国东, 彭平安, 傅家谟, 2002. 珠江口近百年来富营养化加剧的沉积记录[J]. 第四纪研究, 22(2):158-165.
	JIA GUODONG, PENG PING’AN, FU JIAMO, 2002. Sedimentary records of accelerated eutrophication for the last 100 years at the Pearl River Estuary[J]. Quaternary Sciences, 22(2):158-165 (in Chinese with English abstract).
[3]	罗琳, 李适宇, 王东晓, 2008. 珠江河口夏季缺氧现象的模拟[J]. 水科学进展, 19(5):729-735.
	LUO LIN, LI SHIYU, WANG DONGXIAO, 2008. Modelling of hypoxia in the Pearl River Estuary in summer[J]. Advances in Water Science, 19(5):729-735 (in Chinese with English abstract).
[4]	毛汉礼, 甘子钧, 蓝淑芳, 1963. 长江冲淡水及其混合问题的初步探讨[J]. 海洋与湖沼, 5(3):183-206.
	MAO HANLEE, KAN TZECHUN, LAN SHUFANG, 1963. A preliminary study of the Yangtze diluted water and its mixing processes[J]. Oceanologia et Limnologia Sinica, 5(3):183-206 (in Chinese with English abstract).
[5]	宁修仁, 刘子琳, 蔡昱明, 2000. 我国海洋初级生产力研究二十年[J]. 东海海洋, 18(3):13-20.
	NING XIUREN, LIU ZILIN, CAI YUMING, 2000. A review on primary production studies for China seas in the past 20 years[J]. Donghai Marine Science, 18(3):13-20 (in Chinese with English abstract).
[6]	薛惠洁, 柴扉, 徐丹亚, 等, 2001. 南海沿岸流特征及其季节变化[G]//中国海洋学文集. 北京: 海洋出版社, 13:64-75.
	XUE HUIJIE, CHAI FEI, XU DANYA, et al, 2001. Characteristics and seasonal variation of the coastal currents in the South China Sea[G]//Oceanography in China. Beijing: Ocean Press: 13:64-75(in Chinese).
[7]	叶安乐, 李凤岐, 1992. 物理海洋学[M]. 青岛: 青岛海洋大学出版社: 251-259(in Chinese).
[8]	叶丰, 2011. 珠江河口溶解氧的关键控制因素及底层缺氧的历史记录[D]. 广州: 中国科学院南海海洋研究所: 1-106.
	YE FENG, 2011. Indentification of key factors controlling dissolved oxygen and sedimentary record of low oxygen events in the Pearl River Estuary[D]. Guangzhou: South China Sea Institute of Oceanology, Chinese Academy of Sciences: 1-106 (in Chinese with English abstract).
[9]	赵焕庭, 1990. 珠江河口演变[M]. 北京: 海洋出版社: 357-360(in Chinese).
[10]	CAI WEIJUN, DAI MINHAN, WANG YONGCHEN, et al, 2004. The biogeochemistry of inorganic carbon and nutrients in the Pearl River Estuary and the adjacent Northern South China Sea[J]. Continental Shelf Research, 24(12):1301-1319. doi: 10.1016/j.csr.2004.04.005
[11]	DAI MINHAN, ZHAI WEIDONG, CAI WEIJUN, et al, 2008. Effects of an estuarine plume-associated bloom on the carbonate system in the lower reaches of the Pearl River Estuary and the coastal zone of the northern South China Sea[J]. Continental Shelf Research, 28(12):1416-1423. doi: 10.1016/j.csr.2007.04.018
[12]	GAO NA, MA YI, ZHAO MINGLI, et al, 2020. Quantile analysis of long-term trends of near-surface chlorophyll-a in the Pearl River Plume[J]. Water, 12(6):1662. doi: 10.3390/w12061662
[13]	HU JIANFANG, ZHANG GAN, LI KECHANG, et al, 2008. Increased eutrophication offshore Hong Kong, China during the past 75 years: Evidence from high-resolution sedimentary records[J]. Marine Chemistry, 110(1-2):7-17. doi: 10.1016/j.marchem.2008.02.001
[14]	HUANG X P, HUANG L M, YUE W Z, 2003. The characteristics of nutrients and eutrophication in the Pearl River Estuary, South China[J]. Marine Pollution Bulletin, 47(1-6):30-36. doi: 10.1016/S0025-326X(02)00474-5
[15]	LI DOU, GAN JIANPING, HUI R, et al, 2020. Vortex and biogeochemical dynamics for the hypoxia formation within the coastal transition zone off the Pearl River Estuary[J]. Journal of Geophysical Research: Oceans, 125(8): e2020JC016178.
[16]	LI Q P, ZHOU WEIWEN, CHEN YINCHAO, et al, 2018. Phytoplankton response to a plume front in the northern South China Sea[J]. Biogeosciences, 15(8):2551-2563. doi: 10.5194/bg-15-2551-2018
[17]	LIU GUANGPING, HE WEIHONG, CAI SHUQUN, 2020. Seasonal variation of dissolved oxygen in the southeast of the Pearl River Estuary[J]. Water, 12(9):2475. doi: 10.3390/w12092475
[18]	LU ZHONGMING, GAN JIANPING, DAI MINHAN, et al, 2018. Joint effects of extrinsic biophysical fluxes and intrinsic hydrodynamics on the formation of hypoxia west off the Pearl River Estuary[J]. Journal of Geophysical Research: Oceans, 123(9):6241-6259. doi: 10.1029/2018JC014199
[19]	LUO L, ZHOU W, WANG D, 2012. Responses of the river plume to the external forcing in Pearl River Estuary[J]. Aquatic Ecosystem Health & Management, 15(1):62-69.
[20]	MEYBECK M, 1982. Carbon, nitrogen, and phosphorus transport by world rivers[J]. American Journal of Science, 282(4):401-450. doi: 10.2475/ajs.282.4.401
[21]	OU SUYING, ZHANG HONG, WANG DONGXIAO, 2009. Dynamics of the buoyant plume off the Pearl River Estuary in summer[J]. Environmental Fluid Mechanics, 9(5):471-492. doi: 10.1007/s10652-009-9146-3
[22]	RABOUILLE C, CONLEY D J, DAI M H, et al, 2008. Comparison of hypoxia among four river-dominated ocean margins: The Changjiang (Yangtze), Mississippi, Pearl, and Rhône rivers[J]. Continental Shelf Research, 28(12):1527-1537. doi: 10.1016/j.csr.2008.01.020
[23]	SHI ZHEN, XU JIE, HUANG XIAOPING, et al, 2017. Relationship between nutrients and plankton biomass in the turbidity maximum zone of the Pearl River Estuary[J]. Journal of Environmental Sciences, 57:72-84. doi: 10.1016/j.jes.2016.11.013
[24]	SIMPSON J H, SHARPLES J, RIPPETH T P, 1991. A prescriptive model of stratification induced by freshwater runoff[J]. Estuarine, Coastal & Shelf Science, 33(1):23-35.
[25]	WONG L A, CHEN J C, XUE H, et al, 2003. A model study of the circulation in the Pearl River Estuary (PRE) and its adjacent coastal waters: 2. Sensitivity experiments[J]. Journal of Geophysical Research: Oceans, 108(C5):3157.
[26]	XIA X M, LI Y, YANG H, et al, 2004. Observations on the size and settling velocity distributions of suspended sediment in the Pearl River Estuary, China[J]. Continental Shelf Research, 24(16):1809-1826. doi: 10.1016/j.csr.2004.06.009
[27]	YIN KEDONG, LIN ZHIFENG, KE ZHIYUAN, 2004. Temporal and spatial distribution of dissolved oxygen in the Pearl River Estuary and adjacent coastal waters[J]. Continental Shelf Research, 24(16):1935-1948. doi: 10.1016/j.csr.2004.06.017
[28]	ZHANG HENG, LI SHIYU, 2010. Effects of physical and biochemical processes on the dissolved oxygen budget for the Pearl River Estuary during summer[J]. Journal of Marine Systems, 79(1-2):65-88. doi: 10.1016/j.jmarsys.2009.07.002
[29]	ZHANG LING, YIN KEDONG, WANG LU, et al, 2009. The sources and accumulation rate of sedimentary organic matter in the Pearl River Estuary and adjacent coastal area, Southern China[J]. Estuarine, Coastal and Shelf Science, 85(2):190-196. doi: 10.1016/j.ecss.2009.07.035

2016年春季季风转换期的珠江冲淡水分布与生态特征分析^*

Distribution of Pearl-River diluted water and its ecological characteristics during spring monsoon transitional period in 2016^*

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2016年春季季风转换期的珠江冲淡水分布与生态特征分析*

Distribution of Pearl-River diluted water and its ecological characteristics during spring monsoon transitional period in 2016*

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2016年春季季风转换期的珠江冲淡水分布与生态特征分析^*

Distribution of Pearl-River diluted water and its ecological characteristics during spring monsoon transitional period in 2016^*