The contribution of by-products to the sustainability of biofuels

Publication

The cultivation of energy crops on arable land may lead to the displacement of food crops and to indirect land-use change (ILUC) with biodiversity loss and extra greenhouse gas emissions. Some of the energy crops for biofuels deliver feed as by-products, reducing the land use for feed production elsewhere, and thereby substantially reducing these negative indirect effects.

By-products of biofuels reduce indirect land-use change

The cultivation of energy crops on arable land may lead to the displacement of food crops and to indirect land-use change (ILUC). Some of the energy crops for biofuels deliver feed as by-products, and this will have an impact on the global feed market. These by-products could be a substitute for crops cultivated for feed elsewhere. In such cases, the net land use for biofuel crops would be reduced, substantially (for rapeseed and wheat by 50 to 100%, based on the substitution of soy meal).

Nevertheless, the impact of this land-use effect on overall greenhouse gas emissions can be substantial, but sensitive to assumptions on yields and regional land-use change. When land use in Europe (for wheat and rapeseed) is compared to land use in Latin America (for soy), regional differences in ILUC emissions strongly determine overall emissions.

More information on indirect effects

Only available in digital format.

Authors

Ros J , Born GJ van den , Notenboom J

Specifications

Publication title
The contribution of by-products to the sustainability of biofuels
Publication date
2 April 2010
Publication type
Publication
Publication language
English
Product number
303