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Earth and Space Sciences · 术语表

什么是 Pollen analysis？

又称： pollen diagram

Definition 27.8 High School Earth and Space Sciences · 第 27 章 — Reading Past Climates

Pollen analysis is the reading of past vegetation from the pollen preserved in sediments: in each layer of a core, the grains are identified and counted, and the share of each kind of plant, in per cent of the grains counted, is plotted against depth in a pollen diagram.

A pollen diagram of a lake in the Varden Hills, the invented region of this series: invented exercise data, with the succession found in many lakes of the cool temperate zone. The bottom of the core (600\, cm) is 14\,000 years old, the top shown (300\, cm) 6000 years old, with a steady rate of deposition between. — A pollen diagram of a lake in the Varden Hills, the invented region of this series: invented exercise data, with the succession found in many lakes of the cool temperate zone. The bottom of the core ( $600\,\mathrm{cm}$ ) is $14\,000$ years old, the top shown ( $300\,\mathrm{cm}$ ) $6000$ years old, with a steady rate of deposition between.

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