相关实验视频

Updated: Jun 26, 2025

Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading

Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading

Published on: March 6, 2014

的枯竭因博海海的负荷增加而加剧

Menglu Li¹, Jun Liu², Junjie Wang³

¹Marine Ecology Research Center, The First Institute of Oceanology, Ministry of Natural Resources, Qingdao, 266061, China; Marine Chemistry and Environment, Ocean College, Zhejiang University, Zhoushan, 316021, China; Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China.

Environmental pollution (Barking, Essex : 1987)

|May 8, 2024

概括

过度的输入导致博海海域的 (P) 限制,加剧了P耗尽. 这种营养不平衡推动了藻类的繁殖,并影响了沿海生态系统.

科学领域:

海洋化学海洋化学
欧洲化研究的研究.
沿海生态系统的动态

背景情况:

(P) 对沿海地区的藻类生长至关重要.
最近营养动态的变化导致了P限制的增加.
在博海海域 (BS) 驱动P限制的机制尚未完全理解.

研究的目的:

在BS中分析P物种和预算,从2011年到2020年.
调查BS中P限制的内在机制.
了解 (N) 丰富对P动态的影响.

主要方法:

在波海海域对P物种和预算的分析.
时间分析P和N度 (2011-2020年).
对反应性P (Reac-P) 含量的沉积物分析.

主要成果:

河流运输是主要的P来源 (89%),埋葬是主要的命运 (96%).
过度的N输入和生物过程会造成不平衡的P预算,从而增加N/P比率.
沿海地区的溶解无机P (DIP) 含量低,沉积物Reac-P含量高,与有害藻类繁殖相关.

结论:

由于丰富和藻类生产,BS中的耗正在加剧.
增加的N改变了初级生产,加剧了P限制.
过度的N显著影响P池,可能会破坏沿海生态系统的稳定.

关键词:

波海海 (Bohai Sea) 是一个波海海.预算预算预算预算预算预算输入的输入量是多少 P 枯竭的消耗情况.是一种的物质.

更多相关视频

Author Spotlight: Understanding Riverine Nitrogen Impacts and Primary Productivity for Effective Nutrient Management

Author Spotlight: Understanding Riverine Nitrogen Impacts and Primary Productivity for Effective Nutrient Management

Published on: July 14, 2023

Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment

Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment

Published on: July 22, 2019

相关概念视频

The Phosphorus Cycle

The Phosphorus Cycle

Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.

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.

Factors Affecting Solubility

Factors Affecting Solubility

Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:

Responses to Salt Stress

Responses to Salt Stress

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.