V2EX metalimnion

Metalimnion

Definition / 释义

metalimnion(湖泊“中温层/温跃层”):在分层湖泊中位于表水层(epilimnion)深水层(hypolimnion)之间的过渡水层,通常具有最强的温度梯度(温度随深度变化最快),常与“thermocline(温跃层)”密切相关或部分重叠。该层会显著影响氧气、营养盐与浮游生物的分布。

Pronunciation / 发音

/mtlmnin/

Examples / 例句

In summer, the metalimnion forms a barrier that limits mixing between surface and deep water.
夏季时,中温层会形成一道屏障,限制表层与深层水体的混合。

As algae bloom near the surface, oxygen levels in the hypolimnion may drop because the metalimnion reduces vertical circulation.
当藻类在表层暴发时,由于中温层削弱了垂直环流,深水层中的溶解氧可能会下降。

Etymology / 词源

由 **meta-**(表示“中间、变化、过渡”)与 limnion(源自希腊语 limnē,意为“湖”)组合而成,字面含义接近“湖中的过渡层”。

Related Words / 相关词

Literary Works / 文学作品

  • Robert G. WetzelLimnology: Lake and River Ecosystems》:在讲解湖泊分层、温度结构与溶解氧分布时使用该术语。
  • G. Evelyn HutchinsonA Treatise on Limnology》:在湖泊物理结构与分层机制的经典论述中出现该词。
  • 湖泊生态与水质研究论文/报告(如关于分层、缺氧、藻华的研究):常用 metalimnion 描述温跃区的关键水层特征。
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