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Title: Conversion of marginal land into switchgrass conditionally accrues soil carbon but reduces methane consumption

Abstract

Abstract Switchgrass is a deep-rooted perennial native to the US prairies and an attractive feedstock for bioenergy production; when cultivated on marginal soils it can provide a potential mechanism to sequester and accumulate soil carbon (C). However, the impacts of switchgrass establishment on soil biotic/abiotic properties are poorly understood. Additionally, few studies have reported the effects of switchgrass cultivation on marginal lands that have low soil nutrient quality (N/P) or in areas that have experienced high rates of soil erosion. Here, we report a comparative analyses of soil greenhouse gases (GHG), soil chemistry, and microbial communities in two contrasting soil types (with or without switchgrass) over 17 months (1428 soil samples). These soils are highly eroded, ‘Dust Bowl’ remnant field sites in southern Oklahoma, USA. Our results revealed that soil C significantly increased at the sandy-loam (SL) site, but not at the clay-loam (CL) site. Significantly higher CO2 flux was observed from the CL switchgrass site, along with reduced microbial diversity (both alpha and beta). Strikingly, methane (CH4) consumption was significantly reduced by an estimated 39 and 47% at the SL and CL switchgrass sites, respectively. Together, our results suggest that soil C stocks and GHG fluxes are distinctly differentmore » at highly degraded sites when switchgrass has been cultivated, implying that carbon balance considerations should be accounted for to fully evaluate the sustainability of deep-rooted perennial grass cultivation in marginal lands.« less

Authors:
; ORCiD logo; ORCiD logo; ; ; ; ORCiD logo; ; ; ; ORCiD logo; ORCiD logo; ORCiD logo; ORCiD logo; ; ORCiD logo; ; ; ORCiD logo; more »; ORCiD logo « less
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1804924
Alternate Identifier(s):
OSTI ID: 1813397
Grant/Contract Number:  
SC0014079; AC02-05CH11231; AC52-07NA27344; SCW1555
Resource Type:
Published Article
Journal Name:
The ISME Journal
Additional Journal Information:
Journal Name: The ISME Journal Journal Volume: 16 Journal Issue: 1; Journal ID: ISSN 1751-7362
Publisher:
Oxford University Press
Country of Publication:
United Kingdom
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Bates, Colin T., Escalas, Arthur, Kuang, Jialiang, Hale, Lauren, Wang, Yuan, Herman, Don, Nuccio, Erin E., Wan, Xiaoling, Bhattacharyya, Amrita, Fu, Ying, Tian, Renmao, Wang, Gangsheng, Ning, Daliang, Yang, Yunfeng, Wu, Liyou, Pett-Ridge, Jennifer, Saha, Malay, Craven, Kelly, Brodie, Eoin L., Firestone, Mary, and Zhou, Jizhong. Conversion of marginal land into switchgrass conditionally accrues soil carbon but reduces methane consumption. United Kingdom: N. p., 2021. Web. doi:10.1038/s41396-021-00916-y.
Bates, Colin T., Escalas, Arthur, Kuang, Jialiang, Hale, Lauren, Wang, Yuan, Herman, Don, Nuccio, Erin E., Wan, Xiaoling, Bhattacharyya, Amrita, Fu, Ying, Tian, Renmao, Wang, Gangsheng, Ning, Daliang, Yang, Yunfeng, Wu, Liyou, Pett-Ridge, Jennifer, Saha, Malay, Craven, Kelly, Brodie, Eoin L., Firestone, Mary, & Zhou, Jizhong. Conversion of marginal land into switchgrass conditionally accrues soil carbon but reduces methane consumption. United Kingdom. https://doi.org/10.1038/s41396-021-00916-y
Bates, Colin T., Escalas, Arthur, Kuang, Jialiang, Hale, Lauren, Wang, Yuan, Herman, Don, Nuccio, Erin E., Wan, Xiaoling, Bhattacharyya, Amrita, Fu, Ying, Tian, Renmao, Wang, Gangsheng, Ning, Daliang, Yang, Yunfeng, Wu, Liyou, Pett-Ridge, Jennifer, Saha, Malay, Craven, Kelly, Brodie, Eoin L., Firestone, Mary, and Zhou, Jizhong. Thu . "Conversion of marginal land into switchgrass conditionally accrues soil carbon but reduces methane consumption". United Kingdom. https://doi.org/10.1038/s41396-021-00916-y.
@article{osti_1804924,
title = {Conversion of marginal land into switchgrass conditionally accrues soil carbon but reduces methane consumption},
author = {Bates, Colin T. and Escalas, Arthur and Kuang, Jialiang and Hale, Lauren and Wang, Yuan and Herman, Don and Nuccio, Erin E. and Wan, Xiaoling and Bhattacharyya, Amrita and Fu, Ying and Tian, Renmao and Wang, Gangsheng and Ning, Daliang and Yang, Yunfeng and Wu, Liyou and Pett-Ridge, Jennifer and Saha, Malay and Craven, Kelly and Brodie, Eoin L. and Firestone, Mary and Zhou, Jizhong},
abstractNote = {Abstract Switchgrass is a deep-rooted perennial native to the US prairies and an attractive feedstock for bioenergy production; when cultivated on marginal soils it can provide a potential mechanism to sequester and accumulate soil carbon (C). However, the impacts of switchgrass establishment on soil biotic/abiotic properties are poorly understood. Additionally, few studies have reported the effects of switchgrass cultivation on marginal lands that have low soil nutrient quality (N/P) or in areas that have experienced high rates of soil erosion. Here, we report a comparative analyses of soil greenhouse gases (GHG), soil chemistry, and microbial communities in two contrasting soil types (with or without switchgrass) over 17 months (1428 soil samples). These soils are highly eroded, ‘Dust Bowl’ remnant field sites in southern Oklahoma, USA. Our results revealed that soil C significantly increased at the sandy-loam (SL) site, but not at the clay-loam (CL) site. Significantly higher CO2 flux was observed from the CL switchgrass site, along with reduced microbial diversity (both alpha and beta). Strikingly, methane (CH4) consumption was significantly reduced by an estimated 39 and 47% at the SL and CL switchgrass sites, respectively. Together, our results suggest that soil C stocks and GHG fluxes are distinctly different at highly degraded sites when switchgrass has been cultivated, implying that carbon balance considerations should be accounted for to fully evaluate the sustainability of deep-rooted perennial grass cultivation in marginal lands.},
doi = {10.1038/s41396-021-00916-y},
journal = {The ISME Journal},
number = 1,
volume = 16,
place = {United Kingdom},
year = {Thu Jul 01 00:00:00 EDT 2021},
month = {Thu Jul 01 00:00:00 EDT 2021}
}

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