n-Alkanes S13C and salinity correlation in mangrove Aegiceras corniculatum leaves and surface sediments from Zhanjiang estuaries, China
文献类型：期刊论文
| 作者 | Cai, Guifang6; Zhan, Zhao-Wen3; Song, Zhiguang2,4; Wang, Yao-Ping2,6; Xia, Jia2,6; He, Ding1,5 |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2025-02-05 |
| 卷号 | 673页码:13 |
| 关键词 | Carbon isotopes n -Alkanes Plant leaf wax Mangrove forests Water salinity Surface sediments |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2024.122552 |
| 英文摘要 | Carbon isotope ratios (S13C) in plant lipid biomarkers yield insights into historical climates by reflecting plant responses to environmental stressors. Previous research has established a correlation between increased salinity and elevated S13C in Avicennia marina leaf wax n-alkanes, yet it remains unclear if these isotopic signatures are universally applicable across different species and regions or consistently preserved in sedimentary records. We investigated the influence of a 30 ppt salinity gradient on Aegiceras corniculatum in Zhanjiang, China, examining S13C values in leaf wax n-alkanes and adjacent sediments. Leaf wax S13C values ranged from -36.7 %o to -31.4 %o, while sediment n-alkanes ranged from -35.6 %o to -28.2 %o. Sediments consistently exhibited higher S13C values than leaf wax, and their total lipid and n-alkane S13C exhibited a positive correlation with salinity, increasing by 0.06 f 0.02 %o and 0.1 f 0.04 %o per ppt respectively. This positive correlation may be attributed to factors such as marine material input, seasonal variations in lipid synthesis, and plant community succession. In contrast, no significant correlation with salinity was observed in A. corniculatum's bulk leaf tissues or total lipids. This lack of correlation can be attributed to the unique physiological conditions and varying salt exclusion mechanisms among mangrove species, which influence water use efficiency. Accordingly, while sediment S13C values can indicate past vegetation, the variability necessitates caution in using mangrove sediment S13C for paleoenvironmental reconstruction. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001386346000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81872]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Wang, Yao-Ping |
| 作者单位 | 1.Hong Kong Univ Sci & Technol, Dept Ocean Sci, Hong Kong, Peoples R China 2.Guangdong Ocean Univ, Shenzhen Res Inst, Shenzhen 518120, Peoples R China 3.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 4.Nanning Normal Univ, Key Lab Beibu Gulf Environm Change & Resources Uti, Minist Educ, Nanning 530001, Peoples R China 5.Hong Kong Univ Sci & Technol, Ctr Ocean Res Hong Kong & Macau, Hong Kong, Peoples R China 6.Guangdong Ocean Univ, Coll Chem & Environm Sci, Zhanjiang 524088, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Guifang,Zhan, Zhao-Wen,Song, Zhiguang,et al. n-Alkanes S13C and salinity correlation in mangrove Aegiceras corniculatum leaves and surface sediments from Zhanjiang estuaries, China[J]. CHEMICAL GEOLOGY,2025,673:13. |
| APA | Cai, Guifang,Zhan, Zhao-Wen,Song, Zhiguang,Wang, Yao-Ping,Xia, Jia,&He, Ding.(2025).n-Alkanes S13C and salinity correlation in mangrove Aegiceras corniculatum leaves and surface sediments from Zhanjiang estuaries, China.CHEMICAL GEOLOGY,673,13. |
| MLA | Cai, Guifang,et al."n-Alkanes S13C and salinity correlation in mangrove Aegiceras corniculatum leaves and surface sediments from Zhanjiang estuaries, China".CHEMICAL GEOLOGY 673(2025):13. |
入库方式： OAI收割
来源：广州地球化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。