Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Boosting climate change mitigation potential of perennial lignocellulosic crops grown on marginal lands

Journal Article · · Environmental Research Letters
 [1];  [2];  [3]
  1. Michigan State Univ., East Lansing, MI (United States); Michigan State University Department of Earth and Environmental Sciences
  2. Michigan State Univ., East Lansing, MI (United States); Michigan State Univ., Hickory Corners, MI (United States)
  3. Michigan State Univ., East Lansing, MI (United States)

Nitrogen fertilizer (NF) is a major uncertainty surrounding the greenhouse gas (GHG) emissions of lignocellulosic biofuels. NF enhances agronomic yields and soil C inputs via plant litters, but results in soil organic carbon (SOC) decomposition, soil N2O fluxes, and a large fossil energy footprint. Thus, whether NF is beneficial or detrimental to the GHG mitigation of biofuels is unknown. Here, we show the potential GHG mitigation of fertilizing switchgrass (Panicum virgatum) at the NF rate that minimizes net GHG emissions across 7.1 million ha of marginal lands in the Midwest US, with long-term production advantages surpassing emitted GHG by 0.66 Mg CO2e ha–1 yr–1 on the aggregate. Marginal lands limited by poor N fertility could see a much greater benefit, but not SOC-rich lands, limited by low precipitation, or short growing seasons. The objectives of maximizing yield and minimizing GHG overlap only in a few environments, suggesting that maximum yield will reduce the climate benefit of cellulosic biofuels.

Research Organization:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC0018409; FC02-07ER64494
OSTI ID:
1863600
Journal Information:
Environmental Research Letters, Journal Name: Environmental Research Letters Journal Issue: 4 Vol. 17; ISSN 1748-9326
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (43)

Nitrogen and biofuels; an overview of the current state of knowledge journal June 2009
Carbon Sequestration by Perennial Energy Crops: Is the Jury Still Out? journal January 2015
Soil Carbon and Nitrogen Responses to Nitrogen Fertilizer and Harvesting Rates in Switchgrass Cropping Systems journal January 2017
Modeling the biomass of energy crops: Descriptions, strengths and prospective journal June 2017
Nitrogen Fertilization Management of Switchgrass, Miscanthus and Giant Reed: A Review book September 2018
The Agricultural Model Intercomparison and Improvement Project (AgMIP): Protocols and pilot studies journal March 2013
Development of switchgrass (Panicum virgatum) as a bioenergy feedstock in the United States journal June 2005
Distribution of switchgrass (Panicum virgatum L.) aboveground biomass in response to nitrogen addition and across harvest dates journal May 2017
Towards integrated landscape design and biofuel supply chain optimization journal March 2021
CropScape: A Web service based application for exploring and disseminating US conterminous geospatial cropland data products for decision support journal June 2012
Understanding the DayCent model: Calibration, sensitivity, and identifiability through inverse modeling journal April 2015
Influences of nitrogen fertilization and climate regime on the above-ground biomass yields of miscanthus and switchgrass: A meta-analysis journal July 2019
Isotopic evidence for episodic nitrogen fixation in switchgrass (Panicum virgatum L.) journal February 2019
Empirical Evidence for the Potential Climate Benefits of Decarbonizing Light Vehicle Transport in the U.S. with Bioenergy from Purpose-Grown Biomass with and without BECCS journal February 2020
Sustainable bioenergy production from marginal lands in the US Midwest journal January 2013
Climate-smart soils journal April 2016
High-resolution techno–ecological modelling of a bioenergy landscape to identify climate mitigation opportunities in cellulosic ethanol production journal February 2018
A meta-analysis of the greenhouse gas abatement of bioenergy factoring in land use changes journal June 2018
Yield stability analysis reveals sources of large-scale nitrogen loss from the US Midwest journal April 2019
Digital agriculture to design sustainable agricultural systems journal April 2020
The Biology and Agronomy of Switchgrass for Biofuels journal September 2005
Nitrogen fertilization challenges the climate benefit of cellulosic biofuels journal June 2016
Nitrogen Fertilization Reduces Nitrogen Fixation Activity of Diverse Diazotrophs in Switchgrass Roots journal January 2021
How do various maize crop models vary in their responses to climate change factors? journal April 2014
Multimodel ensembles of wheat growth: many models are better than one journal December 2014
Ecosystem model parameterization and adaptation for sustainable cellulosic biofuel landscape design journal February 2016
Evaluation of Agricultural Production Systems Simulator as yield predictor of Panicum virgatum and Miscanthus x giganteus in several US environments journal July 2016
Spatial evaluation of switchgrass productivity under historical and future climate scenarios in Michigan journal December 2016
Switchgrass nitrogen response and estimated production costs on diverse sites journal April 2017
Targeted subfield switchgrass integration could improve the farm economy, water quality, and bioenergy feedstock production journal October 2017
Predicting soil carbon changes in switchgrass grown on marginal lands under climate change and adaptation strategies journal July 2020
Bioenergy crop models: descriptions, data requirements, and future challenges journal March 2012
Land Clearing and the Biofuel Carbon Debt journal February 2008
Indirect Emissions from Biofuels: How Important? journal October 2009
Feedstocks for Lignocellulosic Biofuels journal August 2010
Quantifying Uncertainties in N2O Emission Due to N Fertilizer Application in Cultivated Areas journal November 2012
Maximum soil organic carbon storage in Midwest U.S. cropping systems when crops are optimally nitrogen-fertilized journal March 2017
The biogeochemistry of bioenergy landscapes: carbon, nitrogen, and water considerations journal June 2011
Soil Organic Carbon and Nitrogen Feedbacks on Crop Yields under Climate Change journal January 2018
Crop Model Calibration: A Statistical Perspective journal July 2011
Perennialization and Cover Cropping Mitigate Soil Carbon Loss from Residue Harvesting journal July 2018
The Potential of Switchgrass and Miscanthus to Enhance Soil Organic Carbon Sequestration—Predicted by DayCent Model journal December 2020
N2O release from agro-biofuel production negates global warming reduction by replacing fossil fuels journal January 2008