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Title: Cross-biome assessment of gross soil nitrogen cycling in California ecosystems

Authors:
ORCiD logo; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1419400
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Soil Biology and Biochemistry
Additional Journal Information:
Journal Volume: 107; Journal Issue: C; Related Information: CHORUS Timestamp: 2018-02-02 15:02:52; Journal ID: ISSN 0038-0717
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Yang, Wendy H., Ryals, Rebecca A., Cusack, Daniela F., and Silver, Whendee L. Cross-biome assessment of gross soil nitrogen cycling in California ecosystems. United Kingdom: N. p., 2017. Web. doi:10.1016/j.soilbio.2017.01.004.
Yang, Wendy H., Ryals, Rebecca A., Cusack, Daniela F., & Silver, Whendee L. Cross-biome assessment of gross soil nitrogen cycling in California ecosystems. United Kingdom. doi:10.1016/j.soilbio.2017.01.004.
Yang, Wendy H., Ryals, Rebecca A., Cusack, Daniela F., and Silver, Whendee L. Sat . "Cross-biome assessment of gross soil nitrogen cycling in California ecosystems". United Kingdom. doi:10.1016/j.soilbio.2017.01.004.
@article{osti_1419400,
title = {Cross-biome assessment of gross soil nitrogen cycling in California ecosystems},
author = {Yang, Wendy H. and Ryals, Rebecca A. and Cusack, Daniela F. and Silver, Whendee L.},
abstractNote = {},
doi = {10.1016/j.soilbio.2017.01.004},
journal = {Soil Biology and Biochemistry},
number = C,
volume = 107,
place = {United Kingdom},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.soilbio.2017.01.004

Citation Metrics:
Cited by: 1work
Citation information provided by
Web of Science

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  • Increased partitioning of carbon (C) to fine roots under elevated [CO2], especially deep in the soil profile, could alter soil C and nitrogen (N) cycling in forests. After more than 11 years of free-Air CO2 enrichment in a Liquidambar styraciflua L. (sweetgum) plantation in Oak Ridge, TN, USA, greater inputs of fine roots resulted in the incorporation of new C (i.e., C with a depleted 13C) into root-derived particulate organic matter (POM) pools to 90-cm depth. Even though production in the sweetgum stand was limited by soil N availability, soil C and N content increased over time, and were greatermore » throughout the soil profile under elevated [CO2] at the conclusion of the experiment. However, greater C inputs under elevated [CO2] did not result in increased net N immobilization or C mineralization rates in long-term laboratory incubations, and did not appear to prime the decomposition of older SOM. The 13CO2 of the C mineralized from the incubated soil closely tracked the 13C of the labile POM pool in the elevated [CO2] treatment, especially in shallower soil, and did not indicate the decomposition of older (i.e., pre-experiment) SOM. While potential C mineralization rates were positively and linearly related to total soil organic matter (SOM) C content in the top 30 cm of soil, this relationship did not hold in deeper soil. Taken together with an increased mean residence time of C in deeper soil pools, these findings indicate that C inputs from relatively deep roots under elevated [CO2] may have increased potential for long-term storage. Expanded representation of biogeochemical cycling throughout the soil profile may improve model projections of future forest responses to rising atmospheric [CO2].« less
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