hypolimnion

简明释义

英[ˌhaɪpəʊˈlɪmnɪən]美[ˌhaɪpəˈlɪmnɪən]

n. （湖的）[水文] 均温层，深水层

复 数 h y p o l i m n i a 或 h y p o l i m n i o n s

英英释义

单词用法

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例句

1.The temperature in the hypolimnion (下层水体) remains relatively stable throughout the year.

下层水体的温度在全年保持相对稳定。

2.During summer, the hypolimnion (下层水体) can become anoxic due to the lack of light and mixing.

在夏季，由于缺乏光照和混合，下层水体可能会变得缺氧。

3.Fish often retreat to the hypolimnion (下层水体) during hot weather to escape warmer surface temperatures.

鱼类通常在炎热的天气中退回到下层水体，以逃避较高的表面温度。

4.Research on the hypolimnion (下层水体) helps scientists understand the ecological dynamics of lakes.

对下层水体的研究帮助科学家理解湖泊的生态动态。

5.The hypolimnion (下层水体) is critical for the survival of certain aquatic species during winter.

下层水体对某些水生物种在冬季的生存至关重要。

作文

The study of freshwater ecosystems is crucial for understanding the delicate balance of nature. One of the key components of these ecosystems is the stratification of water layers, particularly in large lakes. Among these layers, the hypolimnion plays a vital role in maintaining the ecological health of the water body. The hypolimnion (下层水体) is the dense, cooler layer of water found at the bottom of a stratified lake, typically below the thermocline. This layer is characterized by its low temperatures and limited light penetration, making it a unique habitat for various organisms. During the summer months, lakes often experience thermal stratification, where the warmer, less dense water sits on top of the cooler, denser water. The upper layer, known as the epilimnion, is warm and well-mixed due to wind action, while the hypolimnion remains isolated from the atmospheric influences. This stratification is not just a physical phenomenon; it has profound implications for the biological processes occurring within the lake. One of the most significant aspects of the hypolimnion is its role in oxygen dynamics. As organic matter decomposes in this layer, oxygen levels can become critically low, leading to what is known as hypoxia. This condition can be detrimental to aquatic life, especially fish species that require higher oxygen concentrations. Understanding the conditions of the hypolimnion is essential for managing fish populations and ensuring the sustainability of the ecosystem. Moreover, the hypolimnion serves as a reservoir for nutrients that can be released during mixing events, such as fall turnover. During this process, the temperature of the surface water decreases, causing it to sink and mix with the deeper layers, including the hypolimnion. This mixing can lead to nutrient enrichment in the epilimnion, promoting phytoplankton growth and supporting the entire food web. In addition to its ecological importance, the hypolimnion also has implications for climate change studies. As global temperatures rise, the thermal stratification of lakes may become more pronounced, potentially leading to longer periods of hypoxia and altered nutrient cycling. Researchers are increasingly focusing on how changes in the hypolimnion may affect overall lake health and biodiversity. In conclusion, the hypolimnion (下层水体) is a critical component of freshwater ecosystems that warrants careful study and management. Its unique characteristics influence not only the aquatic organisms that inhabit it but also the overall health of the lake. By understanding the dynamics of the hypolimnion, we can better protect these vital ecosystems and ensure their resilience in the face of environmental changes.