bottom sediment

简明释义

罐底杂质

英英释义

例句

1.The researchers collected samples of the water and the bottom sediment 底部沉积物 to analyze the pollution levels.

研究人员收集了水样和底部沉积物 底部沉积物样本，以分析污染水平。

2.The presence of heavy metals in the bottom sediment 底部沉积物 indicated industrial contamination.

在底部沉积物 底部沉积物中发现重金属表明了工业污染。

3.Scientists often study bottom sediment 底部沉积物 to understand historical climate changes.

科学家们经常研究底部沉积物 底部沉积物以了解历史气候变化。

4.The lake's bottom sediment 底部沉积物 can reveal information about past ecological conditions.

湖泊的底部沉积物 底部沉积物可以揭示过去生态条件的信息。

5.During the dredging process, a significant amount of bottom sediment 底部沉积物 was removed from the riverbed.

在挖掘过程中，河床上移除了大量的底部沉积物 底部沉积物。

作文

The study of aquatic ecosystems often leads researchers to investigate various components that play a crucial role in maintaining the health and balance of these environments. One such component is the bottom sediment, which refers to the material that accumulates at the bottom of water bodies, including lakes, rivers, and oceans. This sediment can include organic matter, minerals, and pollutants, all of which contribute to the overall ecology of the aquatic habitat. Understanding the characteristics and functions of bottom sediment is vital for environmental scientists and ecologists alike.Firstly, bottom sediment serves as a natural filter for water bodies. As water flows over the sediment, it can trap particles and pollutants, preventing them from dispersing throughout the water column. This filtration process is essential for maintaining water quality, especially in areas impacted by human activities such as agriculture and urban development. For instance, sediments can absorb excess nutrients like nitrogen and phosphorus, which, if left unchecked, can lead to harmful algal blooms that deplete oxygen levels in the water and threaten aquatic life.Moreover, bottom sediment plays a significant role in supporting diverse biological communities. Many organisms, such as benthic invertebrates, rely on the sediment for habitat and food sources. These organisms break down organic matter within the sediment, recycling nutrients back into the water column, which supports the growth of phytoplankton and other primary producers. Thus, the health of aquatic ecosystems is closely tied to the condition of their bottom sediment.In addition to its ecological functions, bottom sediment can also provide valuable historical records of environmental changes. By analyzing sediment cores, scientists can gain insights into past climate conditions, pollution levels, and land-use changes over time. This information is crucial for understanding how ecosystems respond to natural and anthropogenic influences, allowing for better management and conservation strategies.However, bottom sediment is not without its challenges. Human activities, such as dredging, mining, and construction, can disrupt sediment layers and release trapped pollutants back into the water. Furthermore, climate change poses additional threats, as rising temperatures and altered precipitation patterns can affect sediment transport and deposition processes. As a result, monitoring and managing bottom sediment is increasingly recognized as an essential aspect of protecting aquatic ecosystems.In conclusion, the significance of bottom sediment in aquatic environments cannot be overstated. Its role in water filtration, habitat provision, nutrient cycling, and historical record-keeping highlights the interconnectedness of ecosystem components. As we continue to face environmental challenges, understanding and preserving our bottom sediment will be crucial for maintaining the health and resilience of our precious water bodies. Future research and conservation efforts must prioritize this often-overlooked aspect of aquatic ecosystems to ensure their sustainability for generations to come.

水生生态系统的研究常常使研究人员调查各种对维护这些环境的健康和平衡至关重要的组成部分。其中一个组成部分是底部沉积物，指的是在湖泊、河流和海洋等水体底部积累的物质。这些沉积物可以包括有机物、矿物质和污染物，所有这些都对水生栖息地的整体生态起着重要作用。理解底部沉积物的特征和功能对环境科学家和生态学家来说至关重要。首先，底部沉积物作为水体的自然过滤器发挥着重要作用。当水流过沉积物时，它可以捕获颗粒和污染物，防止它们在水柱中扩散。这个过滤过程对于维护水质至关重要，尤其是在受到农业和城市发展的影响的地区。例如，沉积物可以吸收过量的氮和磷等营养物质，如果不加以控制，可能会导致有害的藻类繁殖，耗尽水中的氧气并威胁水生生命。此外，底部沉积物在支持多样的生物群落方面也发挥着重要作用。许多生物，如底栖无脊椎动物，依赖沉积物作为栖息地和食物来源。这些生物分解沉积物中的有机物，将养分循环回水柱中，从而支持浮游植物和其他初级生产者的生长。因此，水生生态系统的健康与其底部沉积物的状况密切相关。除了生态功能外，底部沉积物还可以提供环境变化的宝贵历史记录。通过分析沉积物芯样，科学家可以深入了解过去的气候条件、污染水平和土地利用变化。这些信息对于理解生态系统如何应对自然和人为影响至关重要，从而允许更好的管理和保护策略。然而，底部沉积物并非没有挑战。人类活动，如挖掘、采矿和建设，可能会扰乱沉积物层并释放被困的污染物。此外，气候变化带来了额外的威胁，因为气温上升和降水模式的改变可能会影响沉积物的运输和沉积过程。因此，监测和管理底部沉积物越来越被认为是保护水生生态系统的重要方面。总之，底部沉积物在水生环境中的重要性不容小觑。它在水过滤、栖息地提供、养分循环和历史记录保存中的作用突显了生态系统组成部分之间的相互联系。随着我们继续面临环境挑战，理解和保护我们的底部沉积物对于维护我们珍贵水体的健康和韧性至关重要。未来的研究和保护工作必须优先考虑这一常被忽视的水生生态系统方面，以确保其可持续性，造福子孙后代。