沉积进化的影响,丰富的含水层沉积物岩-lacustrine平原的沉积进化
Meihui Liu1, Yao Du1, Yamin Deng1
1State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, China University of Geosciences, Wuhan 430078, China; School of Environmental Studies, State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430078, China.
The Science of the total environment
|July 29, 2023
概括
地下水中的地质 (P),对地表水构成风险,由于沉积演变而在含水层沉积物中丰富. 古气候和沉积面控制P埋葬,影响地下水质量.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 水文地质学 水文地质学
背景情况:
- 地下水中的高地质 (P) 构成地表水缩的风险.
- 沉积进化的影响在含水层沉积物中对P的丰富程度尚不清楚.
研究的目的:
- 研究沉积演变对含水层沉积物的丰富的影响.
- 为了阐明控制P埋葬和释放在高P地下水区域的因素.
主要方法:
- 沉积物核心分析 (石质学,粒度大小,地质年代学,地质化学).
- 地下水化学分析. 地下水化学分析.
- 沉积物化试验. 沉积物化试验.
主要成果:
- 湖泊沉积物 (温暖湿的气候) 的总有机碳 (TOC),铁 (Fe) 和P (生物可用的 - BAP) 比河流沉积物 (寒冷干燥的气候) 高.
- 沉积面主要控制有机 (OP),而古气候影响了OP和Fe结合的无机P (FeP),共同影响了总P.
- 氧化铁的减少溶解和OP矿化将P释放到地下水中.
结论:
- 沉积进化,受到古气候和沉积面的影响,显著丰富含的含水层沉积物.
- 在沉积物中埋葬有机物和P,特别是在最后的冰川最大期后和全新纪期间,推动了持续的P释放到地下水中.
- 了解沉积演变对于管理地下水中的地质性P和防止高化至关重要.
相关概念视频
The Phosphorus Cycle
37.6K
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.
37.6K
Factors Affecting Solubility
33.5K
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:
33.5K
Primary Production
23.7K
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.
23.7K
Diversity of Protists III
50
Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
50


