Biomass Crop Production: Benefits for Soil Quality and Carbon Sequestration

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Research at three locations in the southeastern US is quantifying changes in soil quality and soil carbon storage that occur during production of biomass crops compared with row crops. After three growing seasons, soil quality improved and soil carbon storage increased on plots planted to cottonwood, sycamore, sweetgum with a cover crop, switchgrass, and no-till corn. For tree crops, sequestered belowground carbon was found mainly in stumps and large roots. At the TN site, the coarse woody organic matter storage belowground was 1.3 Mg ha{sup {minus}1}yr{sup {minus}1}, of which 79% was stumps and large roots and 21% fine roots. Switchgrass ... continued below

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6 p.

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Bandaranayake, W.; Bock, B.R.; Houston, A.; Joslin, J.D.; Pettry, D.E.; Schoenholtz, S. et al. August 29, 1999.

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Research at three locations in the southeastern US is quantifying changes in soil quality and soil carbon storage that occur during production of biomass crops compared with row crops. After three growing seasons, soil quality improved and soil carbon storage increased on plots planted to cottonwood, sycamore, sweetgum with a cover crop, switchgrass, and no-till corn. For tree crops, sequestered belowground carbon was found mainly in stumps and large roots. At the TN site, the coarse woody organic matter storage belowground was 1.3 Mg ha{sup {minus}1}yr{sup {minus}1}, of which 79% was stumps and large roots and 21% fine roots. Switchgrass at the AL site also stored considerable carbon belowground as coarse roots. Most of the carbon storage occurred mainly in the upper 30 cw although coarse roots were found to depths of greater than 60 cm. Biomass crops contributed to improvements in soil physical quality as well as increasing belowground carbon sequestration. The distribution and extent of carbon sequestration depends on the growth characteristics and age of the individual biomass crop species. Time and increasing crop maturity will determine the potential of these biomass crops to significantly contribute to the overall national goal of increasing carbon sequestration and reducing greenhouse gas emissions.

Physical Description

6 p.

Notes

OSTI as DE00004603

Medium: P; Size: 6 pages

Source

  • 4th Biomass Conference of the Americas, Oakland, CA (US), 08/29/1999--09/02/1999

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  • Report No.: ORNL/CP-102201
  • Report No.: EB 52 03 00 0
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 4603
  • Archival Resource Key: ark:/67531/metadc677683

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  • August 29, 1999

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • April 11, 2017, 12:56 p.m.

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Bandaranayake, W.; Bock, B.R.; Houston, A.; Joslin, J.D.; Pettry, D.E.; Schoenholtz, S. et al. Biomass Crop Production: Benefits for Soil Quality and Carbon Sequestration, article, August 29, 1999; Tennessee. (digital.library.unt.edu/ark:/67531/metadc677683/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.