Carbon-negative biofuels from low-input high-diversity grassland biomass

Research output: Contribution to journalArticlepeer-review

1230 Scopus citations

Abstract

Biofuels derived from low-input high-diversity (LIHD) mixtures of native grassland perennials can provide more usable energy, greater greenhouse gas reductions, and less agrichemical pollution per hectare than can corn grain ethanol or soybean biodiesel. High-diversity grasslands had increasingly higher bioenergy yields that were 238% greater than monoculture yields after a decade. LIHD biofuels are carbon negative because net ecosystem carbon dioxide sequestration (4.4 megagram hectare-1 year-1 of carbon dioxide in soil and roots) exceeds fossil carbon dioxide release during biofuel production (0.32 megagram hectare-1 year-1). Moreover, LIHD biofuels can be produced on agriculturally degraded lands and thus need to neither displace food production nor cause loss of biodiversity via habitat destruction.

Original languageEnglish (US)
Pages (from-to)1598-1600
Number of pages3
JournalScience
Volume314
Issue number5805
DOIs
StatePublished - Dec 8 2006

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