肖晓彤1,2,,,
金贵娥1,2,
赵美训1,2
1. 深海圈层与地球系统前沿科学中心和海洋化学理论与工程技术教育部重点实验室, 中国海洋大学, 山东 青岛 266100
2. 青岛海洋科学与技术试点国家实验室 海洋生态与环境科学功能实验室, 山东 青岛 266237
基金项目: 山东省重大科技创新工程专项项目"近海富营养化及其生态灾害环境驱动作用"(批准号：2018SDKJ0504-1)和国家自然科学基金-山东联合基金项目"人类活动对山东半岛典型海湾生态系统环境的影响及其碳储效应"(批准号：U1706219)共同资助
详细信息
作者简介: 马海力, 男, 25岁, 博士研究生, 海洋有机地球化学研究, E-mail: mhl0804@163.com
通讯作者: 肖晓彤, E-mail: xtxiao@ouc.edu.cn
中图分类号: P593;P734.5收稿日期:2021-02-28
修回日期:2021-05-15
刊出日期:2021-07-30
Carbon stock in the Laizhou Bay and evaluation of its ocean health
MA Haili1,2,,XIAO Xiaotong1,2,,,
JIN Gui'e1,2,
ZHAO Meixun1,2
1. Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, Shandong
2. Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, Shandong
More Information
Corresponding author: XIAO Xiaotong,E-mail:xtxiao@ouc.edu.cn
MSC: P593;P734.5--> Received Date: 28 February 2021
Revised Date: 15 May 2021
Publish Date: 30 July 2021
摘要
摘要:海洋沉积碳储量在全球碳循环中发挥着重要作用，而海湾作为海洋的重要组成部分，近几十年来由于受人类活动影响有机碳循环发生了明显变化，对碳储备能力的响应同样不可忽视，但却鲜有报道。研究区域位于莱州湾(37°~38°N，118.9°~120.3°E)，是渤海三大海湾之一。利用39个表层沉积物和其6根沉积箱式柱状样(站位为6154、6174、6184、6194、7211和7214，柱长在17~39cm之间)对海湾有机碳储量进行评估。同时，通过计算海洋健康指数(OHI)十个目标之一的碳储(carbon storage)来评估海洋健康状况。结果表明，莱州湾表层沉积物1cm的有机碳储量平均为0.3t/ha，在研究区域的中部、东部和北部偏高，莱州湾东南部、区域西北部以及黄河口处有机碳储量偏低。莱州湾0~20cm有机碳储量为20.6t/ha，低于我国表层土壤0~20cm有机碳储量29.7t/ha以及浙江、云南、海南和重庆等省市。莱州湾碳储(carbon storage)得分为37，远低于中国平均值51以及世界平均水平75。
关键词: 有机碳储量/
海洋健康指数/
碳储/
海洋沉积物/
莱州湾
Abstract:The ocean plays an important role in the global carbon cycle. The carbon stock in bays was especially essential because bays were influenced by human activities and the organic carbon accumulations have changed during the past decades. The study area is the Laizhou Bay(37°~38°N, 118.9°~120.3°E), one of the three major bays in the Bohai Sea, China. 39 surface sediments and 6 boxing cores(including stations 6154, 6174, 6184, 6194, 7211 and 7214, length of 17~39cm) obtained from the Laizhou Bay were used to assess the carbon stock. Meanwhile, the carbon storage, one of the ten goals of the Ocean Health Index(OHI) was calculated to evaluate the ocean health. Our results showed that the average value of carbon stock in surface sediments was 0.3t/ha. The relatively high values of carbon stock were found in the middle, eastern and northern parts of the Laizhou Bay, while low values were in the southeastern and northwestern parts of the Laizhou Bay and near the Yellow River Estuary. The average value of carbon stock in the top 20cm of sediments in the Laizhou Bay was 20.6t/ha, which was lower than that in soil in China(29.7t/ha), as well as that in Zhejiang, Yunnan, Hainan and Chongqing provinces. The carbon storage is score of 37 in the Laizhou Bay, which was far lower than the average score of 51 in China and the world average score of 75.
Key words:carbon stock/
Ocean Health Index/
carbon storage/
marine sediments/
Laizhou Bay
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