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United States Department of Agriculture

Agricultural Research Service

Title: Spatial Heterogeneity of Dynamic Soil Properties for Management and Restoration of Desert Landscapes

Authors
item Tugel, Arlene - USDA-NRCS LAS CRUCES NM
item Loomis, Lynn - USDA-NRCS MARFA TX
item Andrews, Susan - USDA-NRCS AMES IA
item Dyess, Judith - USDA-NRCS MARFA TX
item Bestelmeyer, Brandon
item Herrick, Jeffrey
item Peacock, George - USDA-NRCS FT WORTH TX
item Biggam, Pete - USDA-NRCS FT WORTH TX

Submitted to: Ecological Society of America Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: July 1, 2004
Publication Date: August 1, 2004
Citation: Tugel, A.J., Loomis, L., Andrews, S., Dyess, J., Bestelmeyer, B.T., Herrick, J.E., Peacock, G., Biggam, P. 2004. Spatial heterogeneity of dynamic soil properties for management and restoration of desert landscapes [abstract]. 89th Annual Meeting, Ecological Society of America. p. 513.

Technical Abstract: Restoration of rangelands requires information about the temporal dynamics of soil and vegetation. However, soil survey databases do not provide information about the historical or expected dynamics of soil properties in response to management and disturbances. Information about the temporal nature of soil and its heterogeneity at multiple scales requires new soil survey methods for gathering and reporting soil and vegetation dynamics. A preliminary study in the Chihuahuan Desert for the collection of dynamic soil properties was conducted by the NRCS soil survey crew at Big Bend National Park, Texas. The soil survey map, ecological site description and state-and-transition model were used to select plots. State-and-transition models were also used to illustrate relationships among data. Soil and vegetation measurements included bulk density, salinity, pH, carbon, soil surface stability, canopy cover and canopy gap. Soil surface stability, bulk density and electrical conductivity differed significantly among ecological states. However, differences for bulk density and salinity may not be functionally significant. Near-surface soil property information can provide additional information about the consequences of degradation as well as insight to the feasibility of restoration success.

Last Modified: 9/2/2014
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