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(Article of periodic en Anglais - 2011)

Document title

Anthropogenic effects on soil quality of ancient agricultural systems of the American Southwest

published at : Soils, sediments, and geoarcheology. Special issue

Authors(s) and Affiliation(s)

HOMBURG J.A. (1) ; SANDOR J.A. (2) ;
(1) Statistical Research, Inc., Tucson, ETATS-UNIS
(2) Dep. of Agronomy, Iowa State Univ., Ames, ETATS-UNIS

Abstract

Soil studies of ancient and modern American Indian agricultural systems across the Southwest indicate that soil changes are highly variable, ranging from degradation to minimal net change, and to enhanced soil quality. Soil response trajectories vary for a number of reasons. Studies of rock mulch soils indicate enhanced fertility, with elevated organic carbon, nitrogen, and available phosphorus levels, increased infiltration rates and moisture retention, and no evidence of compaction. By contrast, cultivation effects vary widely for terraced soils. Although numerous studies have focused on irrigation canals, irrigated soils have received far less attention. Soil studies of irrigation systems along the Gila and Santa Cruz rivers of Arizona now underway will help fill this research gap

Source

Thematical fascicle

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2011, vol. 85, no 2 [pp. 144-154]

8span class="detail">Bibliographic references : 1,5 p.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2010.08.005

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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