The impacts of the hydraulic retention effect and typhoon disturbance on the carbon flux in shallow subtropical mountain lakes
The impacts of the hydraulic retention effect and typhoon disturbance on the carbon flux in shallow subtropical mountain lakes
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DOI：
10.1016/j.scitotenv.2021.150044
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发表时间：
2021-09-09
影响因子：
9.8
通讯作者：
Nakayama, Keisuke
中科院分区：
文献类型：
--
作者：
Lin, Hao-Chi;Tsai, Jeng-Wei;Nakayama, Keisuke
台风是一种极端天气，它会冲刷陆地碳（C）负荷，并暂时混合亚热带地区湖泊的整个水柱。C通量根据与水力停留时间（停留时间）相关的生态循环相关的营养水平而变化。在此，我们试图澄清如何水力停留时间和台风的干扰影响的C通量在两个亚热带高山湖泊在台湾潮湿地区的不同营养水平贫营养和中营养的制度。通过对长江口的水温、溶解性无机碳（DIC）、溶解性有机碳（DOC）和叶绿素a（Chl. a）台风前（4月至7月）、台风期间（8月至11月）和台风后（12月至3月）五年（2009-2010年和2015-2017年）。本文应用三维环境模型（Fantom）研究了分层湖泊中水力滞留对净生态系统生产力（NEP）的影响。结果表明，台风引起的混合与水力滞留效应在控制浅水亚热带湖泊NEP和C通量的关键作用之一。(c)2021年，任作家。由爱思唯尔公司出版。这是一篇开放获取的文章，使用CC BY许可证（http：//creativecommons.org/licenses/by/4.0/）。
A typhoon is extreme weather that flushes terrestrial carbon (C) loads and temporally mixes the entire water columns of lakes in subtropical regions. A C flux varies based on the trophic level associated with the ecological cycle related to hydraulic retention time (residence time). Herein, we sought to clarify how the hydraulic retention time and the disturbance from a typhoon affect the C flux regimes in two subtropical mountain lakes in a humid region of Taiwan with different trophic levels-oligotrophic and mesotrophic. We investigated the meteorological data and vertical profiles of the water temperature, dissolved inorganic carbon (DIC), dissolved organic C (DOC), and chlorophyll a (Chl. a) during the pre-typhoon period (April-July), during the typhoon period (August-November), and the post-typhoon period (December-March) for five years (2009-2010 and 2015-2017). We applied a three-dimensional environmental model (Fantom) to investigate the hydraulic retention effect on the net ecosystem production (NEP) using the residence time in stratified lakes. The results demonstrate that typhoon-induced mixing associated with the hydraulic retention effect plays one of the critical roles in controlling the NEP and C flux in shallow subtropical lakes. (c) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).