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Some thoughts on the factors that controlled prehistoric maize production in the American Southwest with application to southwestern Colorado

Journal of Archaeological Science

By:
, , ,
DOI: 10.1016/j.jas.2013.03.013

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Abstract

In this paper, we present a model of prehistoric southwestern Colorado maize productivity. The model is based on a tree-ring reconstruction of water-year precipitation for Mesa Verde for the period A.D. 480 to 2011. Correlation of historic Mesa Verde precipitation with historic precipitation at 11 other weather stations enabled the construction of an elevation-dependent precipitation function. Prehistoric water-year precipitation values for Mesa Verde together with the elevation-dependent precipitation function allowed construction of the elevation of southwest Colorado precipitation contours for each year since A.D. 480, including the 30-cm contour, which represents the minimum amount of precipitation necessary for the production of maize and the 50-cm contour, which represents the optimum amount of precipitation necessary for the production of maize. In this paper, calculations of prehistoric maize productivity and field life for any specific elevation are also demonstrated. These calculations were performed using organic nitrogen measurements made on seven southwestern Colorado soil groups together with values of reconstructed water-year precipitation and estimations of the organic nitrogen mineralization rate.

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Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Some thoughts on the factors that controlled prehistoric maize production in the American Southwest with application to southwestern Colorado
Series title:
Journal of Archaeological Science
DOI:
10.1016/j.jas.2013.03.013
Volume
40
Issue:
7
Year Published:
2013
Language:
English
Publisher:
Elsevier
Description:
12 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
2869
Last page:
2880
Country:
United States
State:
Colorado