Interpreting δ13C Values Obtained on SOM from Ancient Maya Reservoirs and Depressions

IF 0.7 4区历史学 0 ARCHAEOLOGY

NORTH AMERICAN ARCHAEOLOGIST Pub Date : 2022-12-25 DOI:10.1177/01976931221146570

K. Tankersley, N. Dunning, D. Lentz, C. Carr, Liwi Grazioso, T. Hamilton, Kathryn Reese-Taylor

引用次数: 0

Abstract

Elemental analyzer (EA) Isotope Ratio Mass Spectrometry was used to measure ∂13C values on soil organic matter from reservoirs and depressions at the ancient Maya urban centers of Tikal, Guatemala and Yaxnohcah, Mexico. Variation in δ13C values on soil organic matter were > −2.0‰, which suggests enrichment from C4 plants including maize, other tropical grasses (Poaceae), and tropical sedges (Cyperaceae), CAM plants (Clusia sp.), and cyanobacteria (blue-green algae). Cyanobacteria were likely a major contributor to the 13C enrichment of soil organic matter in Maya reservoirs and depressions, which has obfuscated our understanding of ancient Maya maize production. It is possible that the Maya used cyanobacteria as a fertilizer, which enriched agricultural field soil organic matter.

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古玛雅储坳陷SOM δ13C值解释

采用元素分析仪(EA)同位素比质谱法测量了古玛雅城市中心危地马拉蒂卡尔和墨西哥亚克斯诺卡的水库和洼地土壤有机质的∂13C值。土壤有机质δ13C值变化> - 2.0‰，表明土壤有机质的富集来自C4植物，包括玉米、其他热带禾本科植物(禾本科)、热带莎草(莎草科)、CAM植物(Clusia sp.)和蓝藻(蓝绿藻)。蓝藻可能是玛雅水库和洼地土壤有机质13C富集的主要贡献者，这混淆了我们对古玛雅玉米生产的理解。玛雅人可能将蓝藻用作肥料，以丰富农田土壤有机质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

NORTH AMERICAN ARCHAEOLOGIST ARCHAEOLOGY-

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： Published quarterly, this is the only general journal dedicated solely to North America—with total coverage of archaeological activity in the United States, Canada, and Northern Mexico (excluding Mesoamerica). The North American Archaeologist surveys all aspects of prehistoric and historic archaeology within an evolutionary perspective, from Paleo-Indian studies to industrial sites. It accents the results of Resource Management and Contract Archaeology, the newest growth areas in archaeology, often neglected in other publications. The Journal regularly and reliably publishes work based on activities in state, provincial and local archaeological societies.