GeoLibrary » Reference Library

Search Results

Showing results 1 - 2 of 2

for: Biomass and Bioenergy

« New Search

The contribution of biomass in the future global energy supply: a review of 17 studies

Author(s): Berndes G, Hoogwijk M, van den Broek R

Published: January, 2003

Publisher: Biomass and Bioenergy

DOI: 10.1016/S0961-9534(02)00185-X

Tags: Bio-Energy

URL: http://www.sciencedirect.com/science/article/pii/S096195340200185X

Abstract: This paper discusses the contribution of biomass in the future global energy supply. The discussion is based on areview of 17 earlier studies on the subject. These studies have arrived at widely different conclusions about the possible contribution of biomass in the future global energy supply (e.g., from below 100 EJ yr−1 to above 400 EJ yr−1 in 2050). The major reason for the differences is that the two most crucial parameters—land availability and yield levels in energy crop production—are very uncertain, and subject to widely different opinions (e.g., the assessed 2050 plantation supply ranges from below 50 EJ yr−1 to almost 240 EJ yr−1). However, also the expectations about future availability of forest wood and of residues from agriculture and forestry vary substantially among the studies. The question how an expanding bioenergy sector would interact with other land uses, such as food production, biodiversity, soil and nature conservation, and carbon sequestration has been insufficiently analyzed in the studies. It is therefore difficult to establish to what extent bioenergy is an attractive option for climate change mitigation in the energy sector. A refined modeling of interactions between different uses and bioenergy, food and materials production—i.e., of competition for resources, and of synergies between different uses—would facilitate an improved understanding of the prospects for large-scale bioenergy and of future land-use and biomass management in general.


Towards a standard methodology for greenhouse gas balances of bioenergy systems in comparison with fossil energy systems.

Author(s): Schlamadinger B, Apps M, Bohlin F, Gustavsson L, Jungmeier G, Marland GK, Savolainen PI

Published: September, 1999

Publisher: Biomass and Bioenergy

DOI: 10.1016/S0961-9534(97)10032-0

Tags: Bio-Energy

URL: http://www.sciencedirect.com/science/article/pii/S0961953497100320

Abstract: In this paper, which was prepared as part of IEA Bioenergy Task XV (“Greenhouse Gas Balances of Bioenergy Systems”), we outline a standard methodology for comparing the greenhouse gas balances of bioenergy systems with those of fossil energy systems. Emphasis is on a careful definition of system boundaries. The following issues are dealt with in detail: time interval analysed and changes of carbon stocks; reference energy systems; energy inputs required to produce, process and transport fuels; mass and energy losses along the entire fuel chain; energy embodied in facility infrastructure; distribution systems; cogeneration systems; by-products; waste wood and other biomass waste for energy; reference land use; and other environmental issues. For each of these areas recommendations are given on how analyses of greenhouse gas balances should be performed. In some cases we also point out alternative ways of doing the greenhouse gas accounting. Finally, the paper gives some recommendations on how bioenergy systems should be optimized from a greenhouse-gas-emissions point of view.


Showing results 1 - 2 of 2

for: Biomass and Bioenergy

« New Search

Website by Pandemedia