Many perennial bioenergy crops are prime candidates to
grow on degraded land not suited to food production.
grow on degraded land: Mehmood, M.A., et al. «Biomass Production for Bioenergy Using Marginal Lands.»
Tilman and his colleagues found that, in addition to producing more than twice the biomass than single - species planting (not less than 238 % more than switchgrass), multiple - species plantations restored biodiversity,
grew on degraded land and — perhaps most importantly — could be carbon negative.
Not exact matches
That means using timber and crop residues or trying to
grow high - yielding grasses or trees
on truly marginal and
degraded land, and that is the recommendation of these many reviews.
According to the paper, microalgae, which can be
grown in salt water or produced
on otherwise
degraded land, can be used as livestock feed, freeing up
land currently used for pasture and feed crops.
Because
land and the plants
growing on it are already generating these benefits, diverting
land — even
degraded, under - utilised areas — to bioenergy means sacrificing much - needed food, timber, and carbon storage.
Some researchers argue that
growing bioenergy feedstocks
on degraded lands would avoid competition for
land.
Jatropha curcas, for instance, is a plant that
grows well
on marginal
lands and can also be used to restore
degraded lands, suggesting that Jatropha production, if carefully managed, may be expanded without directly competing with natural forests or high - value agriculture
lands used for food production.