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| Web URL(s): | http://www.esajournals.org/doi/pdf/10.1890/04-1650
Last checked: 03/17/2010
Requires: PDF Reader
Access conditions: Item is within a limited access website |
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| Author(s): | McLauchlan, Kendra K.;
Hobbie, Sarah E.;
Post, Wilfred M. |
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| Author Affiliation: | McLauchlan and Hobbie: Department of Ecology, Evolution, and Behavior, University of Minnesota Saint Paul, Minnesota; Post: Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee |
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| Title: | Conversion from agriculture to grassland builds soil organic matter on decadal timescales |
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| Source: | Ecological Applications: A publication of the Ecological Society of America. Vol. 16, No. 1, February 2006, p. 143-153. |
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| Publishing Information: | Washington, DC: Ecological Society of America |
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| # of Pages: | 11 |
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| Keywords: | TIC Keywords: Agriculture; Organic matter; Prairie restoration; Grassland improvement; Grasslands; Carboniferous soils; Conversion
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| Abstract/Contents: | "Soil organic matter (SOM) often increases when agricultural fields are converted to perennial vegetation, yet decadal scale rates and the mechanisms that underline SOM accumulation are not clear. We measured SOM accumulation and changes in soil properties on a replicated chronosequence of former agricultural fields in the midwestern United States that spanned 40 years after perennial-grassland establishment. Over this time period, soil organic carbon (SOC) in the top 10 cm of soil accumulated at a constant rate of 62.0 g.m-2.yr-1, regardless of whether the vegetation type was dominated by C3 or C4 grasses. At this rate, SOC contents will be equivalent to unplowed native prairie sites within 55-75 years after cultivation ceased. Both labile (short turnover time) and recalcitrant (long turnover time) carbon pools increased for 40, with recalcitrant pools increasing more rapidly than expected. This result was consistent across several different methods of measuring labile SOC. A model that investigates that mechanisms of SOM formation suggests that rapid formation of stable carbon resulted from biochemically resistant microbial products and plant material. Former agricultural soil of the Great Plains may function as carbon sinks for less than a century, although much of the carbon stored is stable." |
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| Language: | English |
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| References: | 59 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McLauchlan, K. K., S. E. Hobbie, and W. M. Post. 2006. Conversion from agriculture to grassland builds soil organic matter on decadal timescales. Ecol. Appl. 16(1):p. 143-153. |
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| Web URL(s):
http://www.esajournals.org/doi/pdf/10.1890/04-1650
Last checked: 03/17/2010
Requires: PDF Reader
Access conditions: Item is within a limited access website |
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MSU catalog number: QH 540 .E273 |
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