Glossary U

The Environmental Glossary. Letter U +++ Popular Articles: 'Utility-interactive', 'Ultraviolet radiation', 'Uptake'

- universal transverse Mercatorprojection : An universal transverse Mercator (UTM) projection is the map projection used in many standard map series.

An Upper-bound Lifetime Cancer Risk is a plausible upper limit to the true Probability that an individual will contract cancer over a 70 year lifetime as a result of a given hazard (such as exposure to a toxic chemical).

Deutsch: Aufnahme / Español: Absorción / Português: Absorção / Français: Absorption / Italiano: Assorbimento

Uptake in the environmental context refers to the absorption or assimilation of substances, such as nutrients, water, chemicals, or pollutants, by living organisms or natural systems. This process is critical for the functioning of ecosystems, affecting plant growth, soil health, and the distribution of nutrients and contaminants.

Deutsch: Uran / Español: Uranio / Português: Urânio / Français: Uranium / Italiano: Uranio

Uranium is a naturally occurring radioactive element with atomic number 92. It is commonly found in small amounts in the Earth's crust and plays a significant role in various environmental processes. Uranium has both natural and anthropogenic sources and can have significant environmental implications.

An Urban and Built-Up Areas is a land use category consisting of residential, industrial, commercial, and institutional land construction sites; public administrative sites; railroad

Deutsch: Stadtfabrikanalyse / Español: Análisis del tejido urbano / Português: Análise do tecido urbano / Français: Analyse du tissu urbain / Italiano: Analisi del tessuto urbano /

The Urban Fabric Analysis is a method for determining the proportions of vegetative, roofed, and paved surface Cover relative to the total urban surface in the city.

Deutsch: Urbane Hitzeinsel-Effekt / Español: Efecto Isla de Calor Urbano / Português: Efeito Ilha de Calor Urbana / Français: Effet d'îlot de chaleur urbain / Italiano: Effetto Isola di Calore Urbano /

An Urban Heat Island Effect is a measurable increase in ambient urban air temperatures resulting primarily from the replacement of vegetation with buildings, roads, and other heat-absorbing infrastructure.

German: Stadtpark
An urban park isa park in cities and areas of high population concentration.

Deutsch: Stadtplanung / Español: Planificación urbana / Português: Planejamento urbano / Français: Urbanisme / Italiano: Pianificazione urbana

Urban planning is the process of designing and regulating the use of space within urban areas, focusing on the development and organization of cities and towns to enhance environmental sustainability, improve the quality of life for residents, and manage natural resources efficiently. In the environmental context, urban planning integrates considerations of ecological sustainability, green infrastructure, and climate resilience to create healthier, more livable urban environments.

Deutsch: Urbanisierung / Español: Urbanización / Português: Urbanização / Français: Urbanisation / Italiano: Urbanizzazione

Urbanisation in the environmental context refers to the process by which rural areas transform into urban ones, with an increasing concentration of human populations in cities. While urbanisation is associated with economic development and improved infrastructure, it poses significant environmental challenges, including habitat destruction, pollution, resource depletion, and increased greenhouse gas emissions. The environmental impacts of urbanisation require careful management to create sustainable, resilient cities that balance human needs with ecological preservation.