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| Web URL(s): | https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj1998.03615995006200040015x
Last checked: 03/01/2024
Access conditions: Item is within a limited-access website
Notes: Abstract only
https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj1998.03615995006200040015x
Last checked: 03/01/2024
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | van Ginkel, J. H.;
Gorissen, A. |
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| Author Affiliation: | DLO Research Institute for Agrobiology and Soil Fertility Dep. of Soil Ecology, Netherlands |
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| Title: | In situ decomposition of grass roots as affected by elevated atmospheric carbon dioxide |
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| Section: | Division S-3-soil fertility & plant nutrition
Other records with the "Division S-3-soil fertility & plant nutrition" Section
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| Source: | Soil Science Society of America Journal. Vol. 62, No. 4, July/August 1998, p. 951-958. |
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| Publishing Information: | Madison, WI: Soil Science Society of America |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Carbon dioxide; Decomposition; Lolium perenne; Organic matter; Root systems; Soil fertility
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| Abstract/Contents: | "The effects of elevated CO₂ on belowground C input, on decomposition of roots in situ vs. decomposition of disturbed roots, and on soil microbial boimass were investigated in a perennial grass species. Forty ryegrass (Lolium perenne L.) plants were homogeneously 1 ⁴C-labeled in two controlled environments for 115 d in a continous 1⁴CO₂ atmosphere at 350 and 700 μL CO₂ L⁻1 and two soil N levels (low, LN, and high, HN). Thereafter, some of the plants were destructively harvested. Undisturbed root systems of the remaining plants were incubated in situ (IRS) for comparison with a disturbed incubation of the dried and ground roots (DRS) in their original soils. At the start of the incubation, elevated CO₂ had increased total 1⁴C-labeled soil C input by 44 and 27% at LN and HN, respectively, compared with input at ambient CO₂. After incubation for 230 d, 40% of 1⁴C soil content was mineralized to 1⁴CO₂ in the disturbed system and 52% in the intact system. Native soil organic matter (SOM) decomposition of the DRS was lower than the SOM decomposition of the IRS. Elevated CO₂ decreased the decomposition of roots and root-derived products by 10% and increased the size of the 1⁴C-SMB by 28% for both IRS and DRS, whereas the decomposition of SOM was not affected by CO₂ at either LN or HN. After plant growth and in situ incubation, the 1⁴C-labeled C in the soil solution showed a highly positive correlation with the amount of 1⁴C-SMB. The ratio between 1⁴C-labeled microorganisms and total 1⁴CO₂ evolved was not affected by elevated CO₂. It seems that microorganisms adapt to changing soil C input under elevated CO₂ and there is no effect on their turnover behavior." |
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| Language: | English |
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| References: | 47 |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
van Ginkel, J. H., and A. Gorissen. 1998. In situ decomposition of grass roots as affected by elevated atmospheric carbon dioxide. Soil Sci. Soc. Am. J. 62(4):p. 951-958. |
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| Web URL(s):
https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj1998.03615995006200040015x
Last checked: 03/01/2024
Access conditions: Item is within a limited-access website
Notes: Abstract only
https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj1998.03615995006200040015x
Last checked: 03/01/2024
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 590 .S65 |
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