An online clean technology database

UNEP Risoe Centre

The UNEP Risoe Centre on Energy, Climate and Sustainable Development (URC) supports the United Nations Environment Programme (UNEP) in its aim to incorporate environmental and development aspects into energy planning and policy worldwide, with special emphasis on assisting developing countries. URC is the main implementing partner of UNEP for the Technology Needs Assessment project. 

Supported technologies

© ClimateTechWiki and respective owners Beach nourishment

Beach nourishment is an adaptation technology primarily used in response to shoreline erosion, although flood reduction benefits may also occur.  It is a soft engineering approach to coastal protection which involves the artificial addition of sediment of suitable quality to a beach area that has a sediment deficit.  Nourishment can also be referred to as beach recharge, beach fill, replenishment, re-nourishment and beach feeding.  

The description of this technology originates from Linham and Nicholls (2010).

© ClimateTechWiki and respective owners Managed realignment

Managed realignment is able to reduce both coastal flooding and erosion.  It is the deliberate process of altering flood defences to allow flooding of a presently defended area.  Managing this process helps to avoid uncertain outcomes and negative impacts.  It also helps to maximise the potential benefits (Leggett et al., 2004).  A number of terms may be used as an alternative to managed realignment.  These include managed retreat, dike realignment, dike (re)opening, de-embankment and de-polderisation.

The description of this technology originates from Linha

© ClimateTechWiki and respective owners Coastal setbacks

Coastal setbacks are ‘a prescribed distance to a coastal feature such as the line of permanent vegetation, within which all or certain types of development are prohibited (Cambers, 1998).  A setback may dictate a minimum distance from the shoreline for new buildings or infrastructure facilities, or may state a minimum elevation above sea level for development.  Elevation setbacks are used to adapt to coastal flooding, while lateral setbacks deal with coastal erosion.

The description of this technology originates from Linham and Nicholls (2010).

foto / crop diversification Crop Diversification and New Varieties

The introduction of new cultivated species and improved varieties of crop is a technology aimed at enhancing plant productivity, quality, health and nutritional value and/or building crop resilience to diseases, pest organisms and environmental stresses. Crop diversification refers to the addition of new crops or cropping systems to agricultural production on a particular farm taking into account the different returns from value-added crops with complementary marketing opportunities.

XA-21 experiment: The pilot plot of Transgenic and non transgenic lines at IRRI Biotechnology for Climate Change Adaptation of Crops

Breeding for improved performance under environmental stresses involves activities which accumulate favourable alleles (different forms of a gene) which contribute to stress tolerance. Biotechnological contributions to crop adaptation to climate change do not only, or even mainly, concern the placement into the crop of one or more genes from an organism with which the crop could not normally breed (i.e. genetically modified crops).