Carbon dioxide and methane concentration and emissions from human-impacted inlands water-estuary system in Terengganu Basin (Malaysia)
编号:1508 访问权限:仅限参会人 更新:2024-10-14 23:30:56 浏览:201次 口头报告

报告开始:2025年01月16日 14:00(Asia/Shanghai)

报告时间:15min

所在会场:[S18] Session 18-The River-Estuary-Bay Continuum: Unveiling the Carbon and Nitrogen Cycles Under Global Change [S18-2] The River-Estuary-Bay Continuum: Unveiling the Carbon and Nitrogen Cycles Under Global Change

暂无文件

摘要

This study investigates the spatial and seasonal variations in greenhouse gas (GHG) emissions, specifically CO2 and CH4, from the Kenyir hydropower reservoir and the downstream Terengganu River system in Malaysia. Elevated GHG concentrations were found near dam discharge outlets, extending up to 12 km along the river, with sand extraction contributing over 50% of the total GHG flux. The estuary exhibited seasonal variations, showing higher CO2 emissions during the dry season and increased CH4 emissions in the wet season, further intensified by a breakwater that altered water column mixing and trapped organic-rich runoff. Annually, the Terengganu River catchment emits approximately 565 Gg of CO2-equivalent, of which 94% originates from the Kenyir Reservoir. Despite its smaller size, the estuary disproportionately contributes to emissions, accounting for 5.5% of the total, due to high organic matter content and reduced water turnover, particularly in the wet season. This study highlights the significant impact of human intervention on the river mouth, which potentially influences GHG dynamics in tropical river-estuary systems and underscores the need for further research in this area.

关键词
tropical estuary,greenhouse gases (GHGs)
报告人
Seng Chee Poh
Associate Professor Universiti Malaysia Terengganu

稿件作者
Seng Chee Poh Universiti Malaysia Terengganu
Siti Farhain Mohd Ludin Universiti Malaysia Terengganu
Daryl Jia Jun Lee Universiti Malaysia Terengganu
Liyang ZHAN Third Institute of Oceanography
Wei Wen Wong Monash University
发表评论
验证码 看不清楚,更换一张
全部评论
重要日期
  • 会议日期

    01月13日

    2025

    01月17日

    2025

  • 09月27日 2024

    初稿截稿日期

  • 01月17日 2025

    注册截止日期

主办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
承办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
Department of Earth Sciences, National Natural Science Foundation of China
联系方式
移动端
在手机上打开
小程序
打开微信小程序
客服
扫码或点此咨询