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Tag: Energy

Land required to drive 100 kilometres
The graphic compares different liquid biofuels and alternative drive systems such as an electric vehicle running on electricity produced from wind power.
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Potential risks of energy crop expansion on land access
Poor land tenure security due to lack of appropriate rules and processes, and biofuels production encroaching on land used by pastoralists or for cultural purposes affect local livelihoods and access to land, particu...
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Pressures on Ugandan forests
Recently Uganda has outlined its national strategy for bioenergy to contribute to increasing the renewable energy mix from 4 to 16 percent by 2017. Alongside the energy challenge, the country faces a number of other diff...
01 Oct 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Suitability by crop type in Uganda
Recently Uganda has outlined its national strategy for bioenergy to contribute to increasing the renewable energy mix from 4 to 16 percent by 2017. Several biofuel crops have been identified, including sugarcane, m...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Potential biofuels output in Uganda
Recently Uganda has outlined its national strategy for bioenergy to contribute to increasing the renewable energy mix from 4 to 16 percent by 2017. Several biofuel crops have been identified, including sugarcane, m...
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Indirect land-use change induced by increased biofuels production
This figure indicates land requirements for biofuels production in response to current biofuels mandates. Depending on projected biofuels demand and available arable land, additional land requirements may exceed a natio...
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Potential biofuels production on abandoned agricultural land
Land-use planning is one strategy to manage competition for land and, at the same time, reduce environmental and social impacts. Assessment of land suitability and availability can identify both high-risk areas where...
29 Feb 2012 - by Nieves Lopez Izquierdo
Estimated feedstock efficiency and environmental impacts
The negative consequences of iLUC have been hotly debated. Recent debate has focused increasingly on a pragmatic approach to reducing the need for land, thereby reducing risks from direct and indirect changes in land...
29 Feb 2012 - by Nieves Lopez Izquierdo
Land required for biofuels by feedstock
When assessing the sustainability of biofuels within the context of conservation, comparison questions are important. What else can the land be used for? One option might be conservation, whereas another might be for...
29 Feb 2012 - by Nieves Lopez Izquierdo
Forest Carbon Sequestration
Converting land for biofuel production can cause biodiversity impacts in the short-term, but such conversion also aects the future resilience of natural ecosystems. In an extreme case, complete deforestation reduces...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Impact of land conversion on biodiversity
The impacts of land conversion on biodiversity may be significant. The degree of impact relates to many factors, including where and how the bioenergy product is cultivated. This figure represent the short-term impact...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Biofuels crops and biodiversity
Biofuels pose several environmental and social risks. Therefore, to be truly a part of the green economy, biofuels need to comply with a set of safeguards along the entire production chain. Any bioenergy development ...
08 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Bioenergy from agriculture: factors related to biodiversity
The use of Genetically Engineered Crops (GECs) carries both potential benefits and risks. While it is recognised that they can help to introduce useful traits and increase productivity, there are also concerns about ...
29 Feb 2012 - by Nieves Lopez Izquierdo
Biofuels in China: crop production and water scarcity
In 2009 China produced 2 billion litres of biofuels, ranking the country third behind Brazil and the USA. The Chinese government has set ambitious targets seeing biofuels as not only contributing to the country’s rap...
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Nitrogen runo
Fertiliser and pesticides used to cultivate feedstocks, as well as contaminated effuents discharged from conversion plants, can cause increasing levels of pollution to waterways. This may constrain the growth of biofue...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Agriculture in the Mississippi River Basin
Fertiliser and pesticides used to cultivate feedstocks, as well as contaminated effuents discharged from conversion plants, can cause increasing levels of pollution to waterways. This may constrain the growth of biofue...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Agrochemical use in US agriculture
01 Oct 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Average water requirement for biofuels
The figure shows average water requirement for biofuels. Underlying data need to be interpreted in context. For example, rainfed jatropha is produced in Mali as a biofuel, which means that it receives less water than in ...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Variation in blue water footprints for selected energy crops
Figure compares the water necessary to produce, transport, and convert a given crop into a fuel in two different regions. This shows important variations, and points to the need for careful matching of energy crops a...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Estimated costs and benefits of restoration projects in different biomes
Biodiversity is the basis for any development; it is the natural capital, the stock of natural ecosystems, which provide services for any human activity. As pointed out above, the main immediate threat to biodiversity...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
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