DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Journal Article · · The ISME Journal

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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231; AC52-07NA27344; SC0014079
OSTI ID:
1804924
Journal Information:
The ISME Journal, Journal Name: The ISME Journal Journal Issue: 1 Vol. 16; ISSN 1751-7362
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (67)

Direct and indirect land-use competition issues for energy crops and their sustainable production - an overview journal November 2010
ggplot2 book January 2009
Response of forest soil respiration to nutrient addition depends on site fertility journal December 2015
Soil Carbon Storage by Switchgrass Grown for Bioenergy journal September 2008
The Mycorrhizal Fungus, Sebacina vermifera, Enhances Seed Germination and Biomass Production in Switchgrass (Panicum virgatum L) journal April 2009
Untapped Potential: Opportunities and Challenges for Sustainable Bioenergy Production from Marginal Lands in the Northeast USA journal September 2014
Review and assessment of methane emissions from wetlands journal January 1993
Land use and environmental factors influencing soil surface CO2 flux and microbial biomass in natural and managed ecosystems in southern Wisconsin journal October 1998
Carbon sequestration in perennial bioenergy, annual corn and uncultivated systems in southern Quebec journal August 2001
Soil management impacts on soil carbon sequestration by switchgrass journal June 2000
Development of switchgrass (Panicum virgatum) as a bioenergy feedstock in the United States journal June 2005
Molecular breeding of switchgrass for use as a biofuel crop journal December 2007
Direct field method for root biomass quantification in agroecosystems journal January 2016
Tolerance of switchgrass to extreme soil moisture stress: Ecological implications journal December 2009
Renewable energy potential on marginal lands in the United States journal January 2014
Soil carbon dioxide fluxes in established switchgrass land managed for biomass production journal January 2007
Root penetration in deep soil layers stimulates mineralization of millennia-old organic carbon journal September 2018
Isotopic evidence for episodic nitrogen fixation in switchgrass (Panicum virgatum L.) journal February 2019
Increased microbial anabolism contributes to soil carbon sequestration by mineral fertilization in temperate grasslands journal March 2019
Corrigendum to “Microbial extracellular polysaccharide production and aggregate stability controlled by Switchgrass (Panicum virgatum) root biomass and soil water potential” [Soil Biology and Biochemistry 143 (2020) 107741] journal September 2020
Spontaneous reaction for acid dissolution of biological tissues in closed vessels journal January 1992
Greenhouse Gas Fluxes in Tropical and Temperate Agriculture: The need for a Full-Cost accounting of Global Warming Potentials journal January 2004
Methane emission from Minnesota peatlands: Spatial and seasonal variability journal March 1993
Mineral control of soil organic carbon storage and turnover journal September 1997
Stability of organic carbon in deep soil layers controlled by fresh carbon supply journal November 2007
Sustainable bioenergy production from marginal lands in the US Midwest journal January 2013
Plant diversity increases soil microbial activity and soil carbon storage journal April 2015
UPARSE: highly accurate OTU sequences from microbial amplicon reads journal August 2013
QIIME allows analysis of high-throughput community sequencing data journal April 2010
Meta-analysis shows positive effects of plant diversity on microbial biomass and respiration journal March 2019
Consistent responses of soil microbial communities to elevated nutrient inputs in grasslands across the globe journal August 2015
Evidence for enhanced N availability during switchgrass establishment and seeding year production following inoculation with rhizosphere endophytes journal March 2014
Response of Mycorrhizal Switchgrass to Phosphorus Fractions in Acidic Soil journal May 2005
Carbon debt of field-scale conservation reserve program grasslands converted to annual and perennial bioenergy crops journal February 2019
Increasing anthropogenic methane emissions arise equally from agricultural and fossil fuel sources journal July 2020
Search and clustering orders of magnitude faster than BLAST journal August 2010
PEAR: a fast and accurate Illumina Paired-End reAd mergeR journal October 2013
FastTree: Computing Large Minimum Evolution Trees with Profiles instead of a Distance Matrix journal April 2009
MAFFT: a novel method for rapid multiple sequence alignment based on fast Fourier transform journal July 2002
Selection of Conserved Blocks from Multiple Alignments for Their Use in Phylogenetic Analysis journal April 2000
Plant diversity predicts beta but not alpha diversity of soil microbes across grasslands worldwide journal November 2014
Plant diversity drives soil microbial biomass carbon in grasslands irrespective of global environmental change factors journal September 2015
Mechanisms of soil carbon accrual and storage in bioenergy cropping systems journal March 2014
Influence of corn, switchgrass, and prairie cropping systems on soil microbial communities in the upper Midwest of the United States journal December 2015
Quantifying the effects of switchgrass ( Panicum virgatum ) on deep organic C stocks using natural abundance 14 C in three marginal soils journal August 2020
Impact of different bioenergy crops on N-cycling bacterial and archaeal communities in soil: Impact of bioenergy crops on soil N-cycling archaea and bacteria journal August 2012
Distance-Based Tests for Homogeneity of Multivariate Dispersions journal October 2005
Changes in soil organic carbon under biofuel crops journal February 2009
The contribution of switchgrass in reducing GHG emissions journal December 2011
Synthesis and modeling perspectives of rhizosphere priming journal August 2013
On the Cause of the 1930s Dust Bowl journal March 2004
Carbon-Negative Biofuels from Low-Input High-Diversity Grassland Biomass journal December 2006
Naive Bayesian Classifier for Rapid Assignment of rRNA Sequences into the New Bacterial Taxonomy journal June 2007
Diversity of Nitrogen-Fixing Bacteria Associated with Switchgrass in the Native Tallgrass Prairie of Northern Oklahoma journal July 2014
Enhancement of Switchgrass (Panicum virgatum L.) Biomass Production under Drought Conditions by the Ectomycorrhizal Fungus Sebacina vermifera journal August 2011
DNA recovery from soils of diverse composition. journal January 1996
Growth promotion and colonization of switchgrass (Panicum virgatum) cv. Alamo by bacterial endophyte Burkholderia phytofirmans strain PsJN journal January 2012
Phasing amplicon sequencing on Illumina Miseq for robust environmental microbial community analysis journal June 2015
Biotic and Abiotic Properties Mediating Plant Diversity Effects on Soil Microbial Communities in an Experimental Grassland journal May 2014
lavaan : An R Package for Structural Equation Modeling journal January 2012
Fitting Linear Mixed-Effects Models Using lme4 journal January 2015
Soil microbial communities are shaped by plant-driven changes in resource availability during secondary succession journal December 2015
Biomass and Carbon Partitioning in Switchgrass journal January 2004
Management of Switchgrass-Dominated Conservation Reserve Program Lands for Biomass Production in South Dakota journal January 2006
Basic Edta as an Extractant for Soil Organic Phosphorus journal January 1993
The Global Methane Budget 2000–2017 journal January 2020
Seasonal dynamics of microbial diversity in the rhizosphere of Ulmus pumila L. var. sabulosa in a steppe desert area of Northern China journal January 2019