相关实验视频

Updated: Jun 25, 2025

Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures

Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures

Published on: January 7, 2019

海草的减少削弱了沉积物的有机碳稳定性

Yuzheng Ren¹, Songlin Liu¹, Hongxue Luo¹

¹Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.

The Science of the total environment

|May 26, 2024

概括

海草的消失减少了蓝色碳的稳定性. 保护和恢复海草草对于保持碳捕集能力和沿海碳战略至关重要.

科学领域:

海洋生态海洋生态学
碳封存是一种碳封存技术.
沿海的生态系统

背景情况:

海草草地是重要的蓝色碳汇,对于缓解气候变化至关重要.
由于人类活动和气候变化的原因,海草的减少威胁到它们的碳储存能力.
海草损失对储存沉积物有机碳 (SOC) 稳定性的影响尚不清楚.

研究的目的:

研究海草退化如何影响沉积物有机碳 (SOC) 和反抗性SOC (RSOC) 库存和稳定性.
量化海草健康指标 (密度,生物质,覆盖面) 与碳储存之间的关系.
为有效的沿海碳保护战略提供见解.

主要方法:

在中国南方九个海草草地15厘米深处对总SOC和RSOC的分析.
对不同海草物种 (Halophila spp., Thalassia hemprichii, Enhalus acoroides) 的碳库存进行比较.
统计分析 (冗余和相关性) 以将海草指标与碳参数联系起来.

主要成果:

强硬的SOC与SOC比率 (RSOC/SOC) 从27%到91%不等,并且随着深度的增加而略有增加.
在Halophila spp.中,SOC和RSOC库存显著增加. 草原与T.hemprichii和E.acoroides草原相比较.
海草发芽密度,生物量和覆盖面的下降与减少的SOC和RSOC含量,库存和RSOC/SOC比率相关,表明碳捕集稳定性下降.

结论:

海草的消失减少了沉积物中储存的蓝色碳的稳定性和数量.
与相邻的海草草原相比,无植被地区的RSOC显著下降.
保护和恢复海草草对于最大限度地捕获蓝色碳和制定强有力的沿海碳战略至关重要.

关键词:

蓝色碳是一种蓝色碳.吊顶结构结构吊顶结构复燃的有机碳是复燃的有机碳海草的数量正在减少.稳定的稳定性稳定的稳定性

更多相关视频

Unraveling the Unseen Players in the Ocean - A Field Guide to Water Chemistry and Marine Microbiology

Unraveling the Unseen Players in the Ocean - A Field Guide to Water Chemistry and Marine Microbiology

Published on: November 5, 2014

Sediment Core Extrusion Method at Millimeter Resolution Using a Calibrated, Threaded-rod

Sediment Core Extrusion Method at Millimeter Resolution Using a Calibrated, Threaded-rod

Published on: August 17, 2016

相关概念视频

The Carbon Cycle

The Carbon Cycle

Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

What are Biogeochemical Cycles?

What are Biogeochemical Cycles?

The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in limited amounts. Therefore, these nutrients must be recycled through both biotic and abiotic components of the ecosystem, in processes generally called biogeochemical cycles.