福建罗源湾潮滩沉积过程对人类活动和台风事件的响应

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福建罗源湾潮滩沉积过程对人类活动和台风事件的响应

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中图分类号: P736.21

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Sedimentary Processes of Tidal Flat and the Responses to Typhoon Events and Anthropogenic Influences in the Luoyuan Bay of China

摘要

摘要: 潮滩地区是人类活动和台风事件影响最为显著的地区之一，利用潮滩沉积记录可以提取影响区域重大人类活动和台风事件的历史变化。罗源湾潮滩中上部盐沼和光滩柱状沉积物粒度分析结果显示，罗源湾潮滩沉积物以细颗粒为主，盐沼内部和潮滩中上部光滩柱状沉积物平均粒径分别为5.41~45.00 μm和5.4~68.82 μm，但在不同深度出现多次沉积物变粗的现象；利用²¹⁰Pb测试计算得到的沉积速率分别为1.96 cm/a和1.23 cm/a；近年来的围填海活动导致潮间带地区沉积速率显著增大，互花米草的引种也进一步导致潮间带上部沉积速率增大。台风的强烈影响使得潮间带沉积出现间断，在沉积间断界面出现沉积物粒度变粗的现象，由此推断了近170年来显著影响罗源湾地区的台风事件沉积层的位置，并由此计算了不同时段的沉积速率。根据柱状沉积物粒度分析结果，不仅可以反演近百年来的对罗源湾产生重要影响的台风事件，也可以反演20世纪50年代以来罗源湾经历的几次较大规模的人类活动。
- 潮滩 /
- 人类活动 /
- 台风事件 /
- 沉积记录 /
- 罗源湾
Abstract: Situated at the junction of land and sea, tidal flat is very sensitive to typhoon event and anthropogenic influence. In order to reveal the histories of regional typhoon events and strong anthropogenic influences, two sediment cores were collected in inner Spartina alterniflora marsh and middle-upper intertidal flat in the Luoyuan Bay for sedimentary records extraction. The sediment cores were cut with 1 cm interval for grain size and radio isotope dating. The results of grain size analysis indicate that the sediment on tidal flat of Luoyuan Bay is mainly composed by fine fractions. The mean grain sizes of core sediments in inner Spartina alterniflora marsh and middle-upper intertidal flat are 5.41 μm~45.00 μm and 5.4 μm~68.82 μm, respectively; however, there are several interfaces where sediment characteristics vary obviously. The mean sedimentation rates in inner Spartina alterniflora marsh and middle-upper intertidal flat calculated from ²¹⁰Pb are 1.96 cm/a and 1.23 cm/a, respectively. However, the mean sedimentation rates increased from 0.56 cm/a during 1909~1946 to 2.36 cm/a during 1946~1966 at upper intertidal flat due to strong reclamations, and the introduction of Spartina alterniflora led to the mean sedimentation rate increased to 5.10 cm/a during the early marsh formation, and with increasing of the marsh age, the mean sedimentation rate decreased to 2.83 cm/a. The sedimentary records of core sediments collected from inner Spartina alterniflora marsh and middle-upper intertidal flat not only recorded the typhoon events which brought the strong effects on the Luoyuan Bay in recent 170 years, and but also recorded the several large scale reclamation from 1950's.
- tidal flat /
- anthropogenic influence /
- typhoon event /
- sedimentary records /
- Luoyuan Bay

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[1]	李滨, 水柏年, 于洋, 吕聪聪, 李雪丽, 上官明珠, 魏珍, 胡成业. 沿浦湾红树林沉积物有机碳埋藏特征及来源解析 . 沉积学报, 2024, (): -. doi: 10.14027/j.issn.1000-0550.2023.126
[2]	刘晓杰, 季银利, 向荣, 张大海, 李先国. 东海内陆架岩心中木质素的沉积记录 . 沉积学报, 2022, 40(2): 525-533. doi: 10.14027/j.issn.1000-0550.2020.083
[3]	白亚之, 乔淑卿, 吴斌, 胡利民, 王楠, 范德江, 杨刚, 石学法. 泰国湾百年来有机碳埋藏记录及环境响应 . 沉积学报, 2022, 40(2): 484-493. doi: 10.14027/j.issn.1000-0550.2021.033
[4]	张涛, 牛丽霞, 何方婷, 刘锋, 罗向欣, 杨清书. 人类活动影响下伶仃洋沉积格局演变特征 . 沉积学报, 2022, 40(3): 753-764. doi: 10.14027/j.issn.1000-0550.2021.007
[5]	王凤, 曾蒙秀, 朱丽东, 朱诚, 尹敬文, 杨欢. 上山遗址区沉积过程与人类活动的关系 . 沉积学报, 2021, 39(3): 723-738. doi: 10.14027/j.issn.1000-0550.2020.049
[6]	段知非, 李超, 毕磊, 何中发, 李芳亮, 杨守业. 崇明岛H12孔百年来长江入海沉积物来源变化及原因 . 沉积学报, 2020, 38(6): 1204-1214. doi: 10.14027/j.issn.1000-0550.2020.002
[7]	高小雪, 韩瑞辰, 范虎童, 王永波, 赵艳, 沈吉, 刘兴起, 汪勇. 云南北海湿地沉积物记录的过去2050年气候演化及对区域人类文明的影响 . 沉积学报, 2020, 38(5): 1016-1025. doi: 10.14027/j.issn.1000-0550.2019.100
[8]	麻福伟, 李茂田, 刘演, 赵小双, 陈中原, SalemAlaa, ShamaA.MAbu, ElhossainyMohamed M.. 埃及Burullus潟湖沉积生源要素变化：百年来人类活动影响 . 沉积学报, 2020, 38(6): 1249-1257. doi: 10.14027/j.issn.1000-0550.2019.106
[9]	高抒. 沉积记录研究的现代过程视角 . 沉积学报, 2017, 35(5): 918-925. doi: 10.14027/j.cnki.cjxb.2017.05.005
[10]	白雪莘, 张卫国, 董艳, 潘大东, 王张华, 孙千里, 陈静, 陈中原, 刘晋嫣. 长江三角洲全新世地层中潮滩沉积磁性特征及其古环境意义 . 沉积学报, 2016, 34(6): 1165-1175. doi: 10.14027/j.cnki.cjxb.2016.06.014
[11]	. 青藏高原北部新生代构造演化在柴达木盆地中的沉积记录 . 沉积学报, 2013, 31(05): 824-833.
[12]	. 中国东部陆架全新世沉积体系：过程—产物关系研究进展评述 . 沉积学报, 2013, 31(05): 845-855.
[13]	. 盆山系统沉积学—兼论华北和塔里木地区研究实例 . 沉积学报, 2013, 31(05): 757-772.
[14]	. 杭州湾北岸芦潮港潮滩沉积物磁性特征的年际变化及其粒度控制 . 沉积学报, 2012, 30(3): 547-555.
[15]	. 近百年来长江口外泥质区高分辨率的沉积记录及影响因素探讨 . 沉积学报, 2012, 30(1): 148-157.
[16]	杨丹. 三门湾近五十年来富营养化的沉积记录 . 沉积学报, 2011, 29(2): 346-353.
[17]	邢云. 潮滩表层沉积物磁性特征的季节性变化及其对沉积动力作用的响应：以杭州湾北岸为例 . 沉积学报, 2007, 25(2): 267-273.
[18]	姚书春, 李世杰. 巢湖富营养化过程的沉积记录 . 沉积学报, 2004, 22(2): 343-347.
[19]	王颖, 朱大奎, 曹桂云. 潮滩沉积环境与岩相对比研究 . 沉积学报, 2003, 21(4): 539-546.
[20]	韩晓非, 张卫国, 陈满荣, 俞立中. 长江口潮滩植物对沉积物铁的地球化学循环及磁性特征的影响 . 沉积学报, 2003, 21(3): 495-499.

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文章访问数: 2096
HTML全文浏览量: 16
PDF下载量: 1524
被引次数: 0

福建罗源湾潮滩沉积过程对人类活动和台风事件的响应

刊出日期: 2013-08-10

中图分类号: P736.21

关键词:

潮滩 /

摘要: 潮滩地区是人类活动和台风事件影响最为显著的地区之一，利用潮滩沉积记录可以提取影响区域重大人类活动和台风事件的历史变化。罗源湾潮滩中上部盐沼和光滩柱状沉积物粒度分析结果显示，罗源湾潮滩沉积物以细颗粒为主，盐沼内部和潮滩中上部光滩柱状沉积物平均粒径分别为5.41~45.00 μm和5.4~68.82 μm，但在不同深度出现多次沉积物变粗的现象；利用²¹⁰Pb测试计算得到的沉积速率分别为1.96 cm/a和1.23 cm/a；近年来的围填海活动导致潮间带地区沉积速率显著增大，互花米草的引种也进一步导致潮间带上部沉积速率增大。台风的强烈影响使得潮间带沉积出现间断，在沉积间断界面出现沉积物粒度变粗的现象，由此推断了近170年来显著影响罗源湾地区的台风事件沉积层的位置，并由此计算了不同时段的沉积速率。根据柱状沉积物粒度分析结果，不仅可以反演近百年来的对罗源湾产生重要影响的台风事件，也可以反演20世纪50年代以来罗源湾经历的几次较大规模的人类活动。

Sedimentary Processes of Tidal Flat and the Responses to Typhoon Events and Anthropogenic Influences in the Luoyuan Bay of China

Publish Date: 2013-08-10

Keywords:

Abstract: Situated at the junction of land and sea, tidal flat is very sensitive to typhoon event and anthropogenic influence. In order to reveal the histories of regional typhoon events and strong anthropogenic influences, two sediment cores were collected in inner Spartina alterniflora marsh and middle-upper intertidal flat in the Luoyuan Bay for sedimentary records extraction. The sediment cores were cut with 1 cm interval for grain size and radio isotope dating. The results of grain size analysis indicate that the sediment on tidal flat of Luoyuan Bay is mainly composed by fine fractions. The mean grain sizes of core sediments in inner Spartina alterniflora marsh and middle-upper intertidal flat are 5.41 μm~45.00 μm and 5.4 μm~68.82 μm, respectively; however, there are several interfaces where sediment characteristics vary obviously. The mean sedimentation rates in inner Spartina alterniflora marsh and middle-upper intertidal flat calculated from ²¹⁰Pb are 1.96 cm/a and 1.23 cm/a, respectively. However, the mean sedimentation rates increased from 0.56 cm/a during 1909~1946 to 2.36 cm/a during 1946~1966 at upper intertidal flat due to strong reclamations, and the introduction of Spartina alterniflora led to the mean sedimentation rate increased to 5.10 cm/a during the early marsh formation, and with increasing of the marsh age, the mean sedimentation rate decreased to 2.83 cm/a. The sedimentary records of core sediments collected from inner Spartina alterniflora marsh and middle-upper intertidal flat not only recorded the typhoon events which brought the strong effects on the Luoyuan Bay in recent 170 years, and but also recorded the several large scale reclamation from 1950's.

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福建罗源湾潮滩沉积过程对人类活动和台风事件的响应

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Sedimentary Processes of Tidal Flat and the Responses to Typhoon Events and Anthropogenic Influences in the Luoyuan Bay of China

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福建罗源湾潮滩沉积过程对人类活动和台风事件的响应

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Sedimentary Processes of Tidal Flat and the Responses to Typhoon Events and Anthropogenic Influences in the Luoyuan Bay of China

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福建罗源湾潮滩沉积过程对人类活动和台风事件的响应

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Sedimentary Processes of Tidal Flat and the Responses to Typhoon Events and Anthropogenic Influences in the Luoyuan Bay of China

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出版历程

目录

福建罗源湾潮滩沉积过程对人类活动和台风事件的响应

English Abstract

Sedimentary Processes of Tidal Flat and the Responses to Typhoon Events and Anthropogenic Influences in the Luoyuan Bay of China

全文HTML

目录

友情链接

期刊在线

联系我们