• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecological research >The contributions of allochthonous and autochthonous materials to organic carbon in coastal sediment: A case study from Tangkhen Bay, Phuket, Thailand
【24h】

The contributions of allochthonous and autochthonous materials to organic carbon in coastal sediment: A case study from Tangkhen Bay, Phuket, Thailand

机译：外源和本地物质对沿海沉积物中有机碳的贡献：以泰国普吉岛唐根湾为例

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Coastal areas have high potential to store carbon from both terrestrial and marine materials due to the interconnectivity among the habitats. We investigated the contributions of the various sources to the sedimentary organic carbon by examining the delta C-13, delta N-15, %TOC (total organic carbon) and %TN (total nitrogen) of several marine macrophytes, which included three seagrass species: Cymodocea rotundata Ascherson & Schweinfurth, Cymodocea serrulata (R. Brown) Ascherson & Magnus, and Halophila ovalis (R. Brown) J.D. Hooker; three seaweed species: Halimeda macroloba Decaisne, Halimeda borneensis W.R. Taylor, and Halimeda opuntia (Linnaeus) J.V. Lamouroux; and one coral species, Porites sp., over a vertical gradient at Tangkhen Bay, Thailand. The distribution of organisms differed significantly between distances from the shore and seasons (p < .001), with seagrass occupying the area of 150-350 m from the shore, while Halimeda was most abundant from 150 to 400 m from the shore. The %TOC and %TN in the sediment were significantly different along the shore (p < .001), with the highest values at 300 m from the shore where the highest organism variability was recoded. Seagrass and Halimeda played major roles in sediment organic matter and carbon contributions, contributing up to 42% of the sedimentary organic carbon, while allochthonous sources such as ocean and terrestrial sources had lower contributions. This study elucidates the importance of macrophytes as organic carbon contributors to sedimentary carbon storage, especially in small semi-enclosed bays.
机译：由于栖息地之间的相互联系，沿海地区具有储存陆上和海洋材料中碳的巨大潜力。通过研究包括三种海草物种在内的几种海洋大型植物的δC-13，δN-15，％TOC（总有机碳）和％TN（总氮），我们研究了各种来源对沉积有机碳的贡献。 ：Cymodocea rotundata Ascherson＆Schweinfurth，Cymodocea serrulata（R. Brown）Ascherson＆Magnus和椭圆形嗜盐菌（Halophila椭球）（R. Brown）JD Hooker；三种海藻：Halimeda macroloba Decaisne，Halimeda borneensis W.R. Taylor和Halimeda opuntia（Linnaeus）J.V. Lamouroux;还有一种珊瑚物种Porites sp。，位于泰国Tangkhen湾的垂直梯度上。在距海岸的距离和季节之间，生物的分布差异显着（p <.001），海草占据距海岸150-350 m的区域，而哈利美达则距海岸150至400 m最为丰富。沿岸沉积物中的％TOC和％TN显着不同（p <.001），距岸边300 m处的最大值最高，那里记录了最高的生物变异性。海草和Halimeda在沉积物有机物和碳贡献中起主要作用，占沉积有机碳的42％，而海洋和陆地等异源源的贡献则较低。这项研究阐明了大型植物作为沉积碳储存中有机碳贡献者的重要性，特别是在小型半封闭海湾中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号