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Seasonal differences of terrigenous material transport in Nanliu Estuary and their effects |
DUAN Xiao-yong1, GAO Fei1, LIU Jin-qing1, YANG Lei2, YIN Ping1, CAO Ke1, LI Yan-xia3, DONG Chao2 |
1. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266237, China; 2. Zhejiang Institute of Hydrogeology and Engineering Geology, Ningbo 315012, China; 3. Environment Research Institute, Shandong University, Qingdao 266237, China |
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Abstract The variations of organic matter content and isotopic composition in the surface sediments of the Nanliu River estuary during the wet season (July 2015) and the dry season (April 2016) were investigated to reveal the seasonal differences of terrestrial materials transported into the sea, and to evaluate their influences on the offshore environment. The results showed that the content of suspended particulate matter (SPM) decreased gradually with the increase of water depth in the dry season (average value: 0.030g/L). In the wet season, the content of SPM was lower before the flood (average value: 0.020g/L), and significantly increased after the flood (average value: 0.047g/L). It is indicated that waves and tides in dry seasons have greater disturbance to the surface sediments, resulting in a large amount of SPM, while waves and tides in wet seasons have less influence, and SPM content is mainly controlled by flood. The average contents of total organic carbon (TOC) and total nitrogen (TN) in sediments in different seasons were similar, and the average TOC content was close to 0.46%. The TN content in wet season and normal season was 0.054% and 0.062%, respectively, but the spatial distribution was significantly different. The content of organic matter is higher in the semi-closed bay east of the estuary in the wet season, and the distribution of organic matter is patchy in the dry season. According to the characteristics of isotopic compositions, terrigenous organic matter was transported outward from the mouth of the river during the wet period, and sedimentary zone with high terrigenous organic matter was formed southward along the estuary, and marine organic matter was the main source in the semi-closed bay. In dry season, the contribution of terrigenous organic matter decreased rapidly from estuarine outward. In the study area, the sedimentary environment was mainly characterized by rapid sediments accumulation after being transported outward from the estuary in wet seasons, and strong mixing under the action of waves and tides in dry seasons, which contributes to the obvious seasonal differences in the environmental quality of surrounding sea waters. Therefore, it is necessary to fully consider how to effectively carry out seasonal regulation in the future water environment treatment process.
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Received: 27 June 2022
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[1] |
印 萍,林良俊,陈斌,等.中国海岸带地质资源与环境评价研究 [J]. 中国地质, 2017,44(5):842-856. Yin Ping, Lin Liangjun, Chen Bin, et al. Coastal zone geo-resources and geo-environment in China [J]. Geology in China, 2017,44(5):842-856.
|
[2] |
刘雅丽,高 磊,朱礼鑫,等.长江口及邻近海域营养盐的季节变化特征 [J]. 海洋环境科学, 2017,36(2):243-248. Liu Y, Gao L, Zhu L, et al. Seasonal variation of nutrients in the Changjiang (Yangtze River) Estuary and the adjacent East China Sea [J]. Marine Environmental Science, 2017,36(2):243-248.
|
[3] |
Wang H, Yang Z, Wang Y, et al. Reconstruction of sediment flux from the Changjiang (Yangtze River) to the sea since the 1860s [J]. Journal of Hydrology, 2008,349(3/4):318-332.
|
[4] |
Dai S B, Yang S L, Cai A M. Impacts of dams on the sediment flux of the Pearl River, southern China [J]. Catena, 2008,76(1):36-43.
|
[5] |
周国华,孙彬彬,曾道明,等.中国东部主要入海河流河口区地球化学特征:理化指标与水溶态元素浓度 [J]. 中国地质, 2012,39(2):283-294. Zhou G, Sun B, Zeng D, et al. Hydrogeochemical characteristics of major estuaries in eastern China: physicochemical indicators and soluble element concentrations of river water [J]. Geology in China, 2012,39(2):283-294.
|
[6] |
杨守业,印 萍.自然环境变化与人类活动影响下的中小河流沉积物源汇过程 [J]. 海洋地质与第四纪地质, 2018,38(1):1-10. Yang S, Yin P. Source to sink processes in the medium and small rivers under the influences of natural environment changes and human activities [J]. Marine Geology & Quaternary Geolog, 2018,38(1):1-10.
|
[7] |
康雪宁.我国典型中小入海河流水沙通量变化及人类活动影响研究 [D].青岛:中国海洋大学, 2016. Kang X. Variations in the water and sediment fluxes from small and medium sized rivers to the sea with analysis of human activitives impacts [D]. Qingdao: Ocean University of China, 2016.
|
[8] |
崔振昂,滕德强,张亮,等.广西廉州湾海水环境质量综合监测 [J]. 中国地质调查, 2018,5(5):74-84. Cui Z, Teng D, Zhang L, et al. Comprehensive monitoring of seawater environmental quality in Lianzhou Bay of Guangxi [J]. Geological Survey of China, 2018,5(5):74-84.
|
[9] |
叶又茵,项 鹏,王磊,等.南流江河口区春季浮游植物群落结构组成与分布特征 [J]. 海洋学报, 2017,39(10):111-123. Ye Y, Xiang P, Wang L, et al. The structure and distribution of phytoplankton community in the Nanliu River Estuary during spring [J]. Haiyang Xuebao, 2017,39(10):111-123.
|
[10] |
孙和平,李从先,业治铮.广西南流江三角洲全新世沉积层序及沉积过程 [J]. 沉积学报, 1987,5(2):133-143. Sun H, Li C, Ye Z. Sedimentary sequence and processes of post-glacial period in the Nanliujiang delts, Guangxi. Acta Sedimentologica Sinica, 1987,5(2):133-143.
|
[11] |
广西自治区生态环境厅, http://sthjt.gxzf.gov.cn/zfxxgk/zfxxgkgl/fdzdgknr/hjzljc/szlxx/. Department of Ecology and Environment of Guangxi Autonomous Region. http://sthjt.gxzf.gov.cn/zfxxgk/zfxxgkgl/fdzdgknr/hjzljc/szlxx/.
|
[12] |
张媛媛,贺行良,孙书文,等.元素分析仪-同位素比值质谱仪测定海洋沉积物有机碳稳定同位素方法初探 [J]. 岩矿测试, 2012,31(4): 627-631. Zhang Y, He X, Sun S, et al. A preliminary study on the determination of organic carbon stable isotope of marine sediment by element analyzer-isotope ratio mass spectrometer [J]. Rock and mineral analysis, 2012,31(4):627-631.
|
[13] |
蒋磊明,陈波,邱绍芳.廉州湾三角洲泥沙运移与海洋动力条件的关系 [J]. 广西科学院学报, 2008,24(1):25-28. Jiang L, Chen B, Qiu S. The relationship of silt transportation and ocean dynamical condition in delta of Lianzhou bay [J]. Journal of Guangxi Academy of Sciences, 2008,24(1):25-28.
|
[14] |
刘津梁.廉州湾潮流深槽维持的动力机制及其演变趋势的数值研究 [D].青岛:中国海洋大学, 2014. Liu J. Numerical study on dynamic mechanism of maintaining the deep tidal channel and its evolution trend in the Lianzhou Bay [D]. Qingdao: Ocean University of China, 2014.
|
[15] |
林镇坤.南流江河口水下三角洲沉积动力特征初探 [D]. 厦门:自然资源部第三海洋研究所, 2019. Lin Z. Preliminary study on the depositional dynamic characteristics of the subaqueous delta at the mouth of Nanliu River [D]. Xiamen: Third Marine Institute, Ministry of Natural Resources, 2019.
|
[16] |
Lin Z K, Wang A J, Ye X. The erosion-deposition process and associated control mechanisms of the Nanliu River subaqueous delta, Southern China coast [J]. Anthropocene Coasts, 2019,2(1):171-192.
|
[17] |
Chen P, Yu J S, Fettweis M. Modeling storm-influenced suspended particulate matter flocculation using a Tide-Wave-Combined Biomineral Model [J]. Water Environment Research, 2018,90(3):244-257.
|
[18] |
Tarpley D R N, Harris C K, Friedrichs C T, et al. Tidal variation in cohesive sediment distribution and sensitivity to flocculation and bed consolidation in an idealized, partially mixed estuary [J]. Journal of Marine Science and Engineering, 2019,7(10),Article Number:334.DOI: 10.3390/jmse7100334.
|
[19] |
Kennedy H, Beggins J. Duarte CM, et al. Seagrass sediments as a global carbon sink: Isotopic constraints [J]. Global Biogeochemical Cycles. 2010,24,Article Number:GB4026.DOI:10.1029/2010GB003848.
|
[20] |
宋逸群,王传远,靳文静,等.渤海辽东湾海域表层沉积物有机质特征、来源及环境评价分析 [J]. 生态科学, 2022,41(2):84-90. Song Y, Wang C, Jin W, et al. Characteristics、sources of organic matter in surface sediments and environmental assessment of Liaodong Bay, Bohai Sea [J]. Ecological Science, 2022,41(2):84–90.
|
[21] |
刘启明.南海北部及珠江口溶解无机碳的稳定同位素地球化学特征 [D]. 厦门:厦门大学, 2005. Liu Q. Stable isotope geochemistry of dissolved inorganic carbon from northern South China Sea and Pearl River Estuary [D]. Xiamen: Xiamen University, 2015.
|
[22] |
Lamb A L, Wilson G P, Leng M J. A review of coastal palaeoclimate and relative sea-level reconstructions using [delta] 13C and C/N ratios in organic material [J]. Earth Science Reviews, 2006,75(1-4):29-57.
|
[23] |
覃秋荣,龙晓红.北海市近岸海域富营养化评价 [J]. 海洋环境科学, 2000,19(2):43-44. Qin Q, Long X. Eutrophication evaluation of Beihai coastal waters [J]. marine environmental science, 2000,19(2):43-44.
|
[24] |
李萍,刘保良,陈旭阳.广西北海市廉州湾养殖区营养盐分布与富营养化的研究 [J]. 科技传播, 2011,(17):107-108. Li P, Liu B, Chen X. Study on nutrient distribution and eutrophication in the breeding area of lianzhou bay, beihai city, guangxi province [J]. Science and Technology Communication, 2011,(17):107-108.
|
[25] |
蓝文陆.钦州湾枯水期富营养化评价及其近5年变化趋势 [J]. 中国环境监测, 2012,28(5):40-44. Lan W. Eutrophication assessment and its variation trends during dry season of last five years in the Qinzhou Bay [J]. Environmental Monitoring in China, 2012,28(5):40-44.
|
[26] |
张景平,黄小平,江志坚,等.2006~2007年珠江口富营养化水平的季节性变化及其与环境因子的关系 [J]. 海洋学报, 2009,31(3):113-120. Zhang J, Huang X, Jiang Z, et al. Seasonal variations of eutrophication and the relationship with environmental factors in the Zhujiang Estuary in 2006~2007 [J]. Acta Oceanologica sinica, 2009,31(3): 113-120.
|
[27] |
宋伟娜,张海波,石晓勇,等.2018年春夏季苏北浅滩生物可利用氮分析 [J]. 中国环境科学, 2021,41(7):3316-3323. Song W, Zhang H, Shi X, et al. Analysis of bioavailable bitrogen in Subei Shoal in Spring and Summer 2018 [J]. China Environmental Science, 2021,41(7):3316-3323.
|
[28] |
李伯志.中国近海营养盐季节和年际变化特征分析 [D]. 天津:天津科技大学, 2018. Li B. Seasonal and interannual variation of nutrients in coastal China [D]. Tianjin: Tianjin University of Science and Technology, 2018.
|
[29] |
郭志刚,杨作升,范德江,等.长江口泥质区的季节性沉积效应 [J]. 地理学报, 2003,58(4):591-597. Guo Z, Yang Z, Fan D, et al. Seasonal sedimentary effect on the changjiang estuary [J]. Acta Geographica Sinica, 2003,58(4):591-597.
|
[30] |
Zhang SS, Liang C, Xian WW. Spatial and temporal distributions of terrestrial and marine organic matter in the surface sediments of the Yangtze River estuary [J]. Continental Shelf Research, 2020,203: 104158.
|
[31] |
Woodruff J D, Geyer W R, Sommerfield C K, et al. Seasonal variation of sediment deposition in the Hudson River estuary [J]. Marine Geology, 2001,179(1/2):105-119.
|
[32] |
中国海湾志编纂委员会.中国海湾志:第十四分册,重要河口 [M]. 北京:海洋出版社, 1998,7540779. China Gulf Annals Compilation Committee. Gulf Records of China: Volume 14, Important Estuaries [M]. Beijing: Maritime Press, 1998,7540779.
|
[33] |
黎广钊,梁 文,刘敬合.廉州湾重矿物组合区与泥沙来源 [J]. 广西科学, 2002,(2):119-123. liang G, liang W, liu J. Heavy mineral assemblages and sediment sources in Lianzhou Bay [J]. Guangxi Sciences, 2002,(2):119-123.
|
[34] |
孙和平,业治铮.广西南流江三角洲沉积作用和沉积相 [J]. 海洋地质与第四纪地质, 1987,7(3):1-10. Sun H, Ye Z. Sedimentation and sedimentary facies of Nanliujiang delta in Guangxi [J]. Marine Geology and Quaternary Geology, 1987,7(3):1-10.
|
[35] |
陈波.廉州湾水动力特征的初步分析 [J]. 海岸工程, 1988,7(3): 35-40. Chen B. Preliminary analysis of features of hydrodynamics in Lianzhou Bay [J]. Coastal engineering, 1988,7(3):35-40.
|
[36] |
莫永杰.南流江河口动力过程与地貌发育 [J]. 海洋通报, 1988,7(3): 43-48. Mo Y. The dynamic process and geomorphologic development of the Nanliu river estuary [J]. Marine Science bulletin, 1988,7(3):43-48.
|
[37] |
曹绮欣,孙昭华,冯秋芬.三峡水库调节作用对长江近河口段水文水动力特性影响[J]. 水科学进展, 2012, 23(6):844-850. Cao Q, Sun Z, Feng Q. Effects of the Three Gorges Reservoir on hydrodynamics in tidal reach of the Yangtze River[J]. Advances in Water Science, 2012, 23(6):844-850.
|
[38] |
Cao L, Liu S, Ren J. Seasonal variations of particulate silicon in the Changjiang (Yangtze River) Estuary and its adjacent area [J]. Acta Oceanologica Sinica, 2013,32(4):1-10.
|
[39] |
庞重光,于炜.渤海表层悬浮泥沙的空间模态及其时间变化 [J]. 水科学进展, 2013,24(5):722-727. Pang C, Yu W. Spatial modes of suspended sediment concentration in surface water in Bohai Sea and their temporal variations [J]. Advances in Water Science, 2013,24(5):722-727.
|
[40] |
Violaine Piton, Sylvain Ouillon, Vu Duy Vinh, et al. Seasonal and tidal variability of the hydrology and suspended particulate matter in the Van Uc estuary, Red River, Vietnam. Journal of Marine Systems, 2020,211:103403.
|
[41] |
Daniel D B, Ashraf P M, Thomas S N. Abundance, characteristics and seasonal variation of microplastics in Indian white shrimps (Fenneropenaeus indicus) from coastal waters off Cochin, Kerala, India [J]. Science of the Total Environment, 2020, 737, Article Number: 139839. DOI: 10.1016/j.scitotenv.2020.139839.
|
[42] |
中华人民共和国自然资源部,中国海洋环境质量公报,2013-2017 [R]. http://www.mnr.gov.cn/sj/sjfw/hy/gbgg/zghyhjzlgb/. Ministry of Natural Resources, PRC, China Bulletin on Marine Environment Quality, 2013-2017 [R]. http://www.mnr.gov.cn/sj/sjfw/hy/gbgg/zghyhjzlgb/.
|
[43] |
黄王,赵银军,蓝文陆.南流江全流域水质空间分布特征及年际变化 [J]. 广西科学院学报, 2021,37(4):331-338. Huang W, Zhao Y, Lan W. Spatial distribution characteristics and interannual variation of water quality in Nanliu River Basin [J]. Journal of Guangxi Academy of Sciences, 2021,37(4):331-338.
|
[44] |
何翔宇,燕文明,吴挺峰,等.由河道输入太湖的含营养盐泥沙拦截试验 [J]. 中国环境科学, 2022,42(4):1854-1860. He X, Yan W, Wu T, et al. Interception experiment of nutrient-laden cohesive sediment imported from river channel into Lake Taihu [J]. China Environmental Science, 2022,42(4):1854-1860.
|
|
|
|