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夏季叶绿素a和营养素在珍珠河河口的空间分布

Yukun Pan¹, Yin Chen¹, Hui Zhao²

¹College of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, China; Research Center for Coastal Environmental Protection and Ecological Resilience, Guangdong Ocean University, Zhanjiang, China; Cooperative Research Center for Nearshore Marine Environmental Change, Guangdong Ocean University, Zhanjiang, China.

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概括

河口中的高叶绿素a与盐度和光线有关,而不仅仅是营养水平. 缩管理需要了解珍珠河河口中这些复杂的相互作用.

科学领域:

河口生物地质化学
沿海生态系统的动态
营养循环和营养强化的循环.

背景情况:

河口是重要的陆海接口,支持沿海生态系统和经济.
在中国大湾区的珍珠河口 (PRE) 面临着复杂的环境挑战,包括由于快速发展而导致的安化.
了解营养动态和叶绿素-a分布对于管理PRE敏感生态系统至关重要.

研究的目的:

分析PRE中的-a (Chl-a) 和营养素的分布.
研究由环境因素影响的Chl-a和营养分布的调节机制.
提供关于河口环保化管理的见解.

主要方法:

在2023年夏天在PRE和相邻水域进行实地调查.
应用三端混合模型来分析Chl-a和营养物质的分布.
对环境因素的统计分析,包括盐度,光线可用性和营养度.

主要成果:

在盐度过渡区中发现了高Chl-a区域,受到盐度,光线和营养投入的影响.
悬浮物质的光限制降低了Chl-a,尽管河口内的营养水平很高.
PRE表现出富含,限的模式,在河口和口岸附近的地区,Chl-a和酸盐之间存在负相关性.
盐度驱动的混合是营养分配的主要驱动因素,在河口内进行添加营养过程,在河口外进行消耗过程.

结论:

盐度,光线可用性和营养投入协同调节河口中Chl-a的分布.
在PRE中,轻化管理必须考虑光限制和动态,以及营养投入.
盐度驱动的混合是营养分配的关键,在河口内外都有不同的添加和消耗过程.

关键词:

叶绿素-a是一种.营养素营养素营养素的限制限制.珍珠河的河口是珍珠河口.三个末端组合组合模型.

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Primary Production

Primary Production

The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.