| 1. |
- Berndes, Göran, 1966
(författare)
-
Bioenergy and water - The implications of large-scale bioenergy production for water use and supply
- 2002
-
Ingår i: Global Environmental Change. - 0959-3780. ; 12:4, s. 253-271
-
Tidskriftsartikel (refereegranskat)abstract
- There are major expectations that bioenergy will supply large amounts of CO2 neutral energy for the future. A large-scale expansion of energy crop production would lead to a large increase in evapotranspiration appropriation for human uses, potentially as large as the present evapotranspiration from global cropland. In some countries this could lead to further enhancement of an already stressed water situation. But there are also countries where such impacts are less likely to occur. One major conclusion for future research is that assessments of bioenergy potentials need to consider restrictions from competing demand for water resources. © 2002 Elsevier Science Ltd. All rights reserved.
|
|
| 2. |
|
|
| 3. |
- Berndes, Göran, 1966, et al.
(författare)
-
Bioenergy for climate stabilization
- 2004
-
Ingår i: Bioenergy International. ; :no 9, May, s. 5-
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
|
|
| 4. |
|
|
| 5. |
- Berndes, Göran, 1966, et al.
(författare)
-
Cadmium accumulation and Salix-based phytoextraction on arable land in Sweden
- 2004
-
Ingår i: Agriculture, Ecosystems and Environment. - : Elsevier BV. - 0167-8809 .- 1873-2305. ; 103:1, s. 207-223
-
Tidskriftsartikel (refereegranskat)abstract
- Cadmium accumulation in arable soils causes concern due to possible direct environmental effects and health risks associated with exposure of humans to cadmium through agricultural products. This paper discusses the problem of cadmium accumulation in Swedish arable land, and evaluates Salix (Salix vinimalis) cultivation as a tool for addressing the problem. It is found that Salix cultivation offers an effective option for addressing the cadmium accumulation, especially when the topsoil has high cadmium content due to anthropogenic inflows, and the subsoil naturally contains little cadmium. The estimated practical potential for Salix-based cadmium management (ca. 490 000 ha) is very large compared to the present Salix plantation area in Sweden (ca. 15 000 ha). However, the estimates of the net economic value of cadmium removal from arable land indicate that the economics of Salix production will not improve dramatically due to an induced cadmium removal. Salix-based cadmium management will therefore most likely take place in counties where Salix cultivation can be expected to expand as a response to an unfilled biomass demand in the energy sector. © 2003 Elsevier B.V. All rights reserved.
|
|
| 6. |
|
|
| 7. |
- Berndes, Göran, 1966, et al.
(författare)
-
The contribution of biomass in the future global energy supply: A review of 17 studies
- 2003
-
Ingår i: Biomass and Bioenergy. - 1873-2909 .- 0961-9534. ; 25:1, s. 1-28
-
Tidskriftsartikel (refereegranskat)abstract
- This paper discusses the contribution of biomass in the future global energy supply. The discussion is based on a review 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. © 2003 Elsevier Science Ltd. All rights reserved.
|
|
| 8. |
|
|
| 9. |
- Berndes, Göran, 1966, et al.
(författare)
-
The feasibility of large-scale lignocellulose-based bioenergy production
- 2001
-
Ingår i: Biomass and Bioenergy. - 1873-2909 .- 0961-9534. ; 20:5, s. 371-383
-
Tidskriftsartikel (refereegranskat)abstract
- Global, large-scale use of bioenergy may replace a significant part of present fossil fuel use. We show that labor availability and water resources are large compared to those required to operate a bioenergy system of such size. The present study contradicts the assertion by Giampietro et al. [Bioscience 47(9) (1997) 587], that labor and water availability provide invincible barriers to a large-scale use of biofuels. We examine water and labor requirements under more reasonable assumptions about bioenergy supply options and demand levels. Bioenergy supplies are based on dedicated plantations of lignocellulosic crops and bioenergy demand is based on the renewable intensive global energy scenarios (RIGES). We find that labor and water requirements are an order of magnitude lower than the estimates by Giampietro et al. For instance, labor requirements do not exceed 1 percent of the estimated total work force in any country. © 2001 Elsevier Science Ltd.
|
|
| 10. |
|
|
