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Published online 27 February 2006
Published in Soil Sci Soc Am J 70:631-642 (2006)
DOI: 10.2136/sssaj2005.0185
© 2006 Soil Science Society of America
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Soil Physical and Biological Properties as Affected by Land Leveling in a Clayey Aquert

Kristofor R. Brye*, Nathan A. Slaton and Richard J. Norman

Dep. of Crop, Soil, and Environmental Sciences, Univ. of Arkansas, Fayetteville, AR 72701


Figure 1
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  		Fig. 1. Surface elevation changes and estimated amounts of soil manipulated throughout a 0.36-ha study area as a result of land leveling a clay soil in northeast Arkansas. Positive (+) values indicate increased elevation or deposited soil. Negative (–) values indicate decreased elevation or removed soil.

 

Figure 2
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  		Fig. 2. Pre- and postleveling spatial distributions of soil bulk density from the 0- to 10-cm depth. The x-direction is east and the y-direction is north on the land surface.

 

Figure 3
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  		Fig. 3. Pre- and postleveling spatial distributions of soil particle-size fractions from the 0- to 10-cm depth. The x-direction is east and the y-direction is north on the land surface.

 

Figure 4
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  		Fig. 4. Pre- and postleveling spatial distributions of soil microbial biomass contents from the 0- to 10-cm depth. The x-direction is east and the y-direction is north on the land surface.

 

Figure 5
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  		Fig. 5. Pre- and postleveling spatial distributions of soil fungal/bacterial biomass concentration ratios from the 0- to 10-cm depth. The x-direction is east and the y-direction is north on the land surface.

 

Figure 6
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  		Fig. 6. Relationships between soil bacterial and fungal biomass contents and bulk density, sand, silt, and clay from the 0- to 10-cm depth for combined pre- and postleveling data.

 




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