Phytoliths in selected broad-leaved trees in China

Area of Science:

• Paleobotany
• Archaeobotany
• Geoscience

Background:

• Broad-leaved trees are vital components of tropical to temperate ecosystems in China.
• Reference collections of phytoliths from broad-leaved trees are essential for paleoenvironmental reconstruction and understanding early human plant use.
• Limited research exists on the phytoliths produced by modern broad-leaved trees.

Purpose of the Study:

• To investigate the types and production of phytoliths in modern broad-leaved trees from Northern and Southern China.
• To establish a preliminary reference for phytolith identification in broad-leaved trees.
• To identify potential diagnostic phytolith morphotypes for broad-leaved trees.

Main Methods:

• Collection of leaf, twig, and fruit samples from 110 common broad-leaved tree species across China.
• Extraction and analysis of phytoliths from the collected plant materials.
• Comparison of findings with previously published data.

Main Results:

• Phytoliths were produced by 58 out of 110 studied species.
• A total of 23 distinct phytolith morphotypes were identified.
• Phytolith types and production showed similarities between Northern and Southern China.

Conclusions:

• Five morphotypes (ELONGATE BRACHIATE GENICULATE, POLYGONAL TABULAR, ELONGATE FACETATE, TRACHEARY ANNULATE/FACETATE GENICULATE, and TRACHEARY ANNULATE/FACETATE CLAVIFORM) are proposed as potential diagnostic indicators for broad-leaved trees.
• This study offers a foundational reference for identifying broad-leaved tree phytoliths in sediment and archaeological contexts.
• The findings contribute to improved paleoenvironmental reconstructions and the study of ancient plant resource utilization.