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  • Tree population of the municipal, state and public forest ownership specified by main tree species and age classes, units of inventory.

  • territory of first degree of the regional outposts of the nature administration conformable to the grand ducal regulation of 11th june 2009 concerning the number and composition of the outposts of the nature administration.

  • The map of the protected natural forests in the Grand-Duchy of Luxembourg is the result of a cartography of private and public forests in the framework of which data on forest formations protected under article 17 of the amended law of the 19th January 2004 concerning the protection of nature and natural resources (Nature Protection Law) were collected. The cartography was compiled in 2014 and is based on phytosociological field inventories of all the forest formations in the Grand-Duchy, realised during the years 1992-2002. None of the data collected and mapped between 1992 and 2002 have been updated by further inventories or by verification in the field. The “2014” map of protected natural forests thus reflects the situation as recorded during the years 1992-2002. Due to natural developments and changes induced through forest management since the original inventories (around 20 years ago), the actual situation encountered in the field today can differ from that shown in the “2014” map. The map can therefore only serve as a support tool for forest owners in the framework of article 17 conform forest management of natural forests protected by Nature Protection Law. In any case, the information it contains must be confirmed and, if necessary, updated in the field. Some protected forest formations have not been mapped in the original cartography and are therefore not represented in the simplified map: i.e. forest borders, copses and conversion or transformation states of coppice to high forest. Neither are small-area biotopes such as sources, natural ponds, rock formations, and so on represented on the map. They are nevertheless subject to protection under article 17 of the Nature Protection Law. All forest formations that are not protected under article 17 figure on the map as seen on the topographic maps of the Administration du Cadastre et de la Topographie. The guidance and best practice note ("Leitfaden für forstliche Bewirtschaftungs- und Pflegemaßnahmen von geschützten Waldbiotopen"), available online on the site of the Ministère du Développement Durable et des Infrastructures ( ), contains forest management recommendations helping to avoid the destruction, deterioration or degradation of the protected forests.

  • subdivision of the country in biogeoclimatic areas according to the ecological classification method based on climate, constitution of the mother rock and the ground: 18 ecological sectors

  • areal units of the biological stations, intercommunal syndicates for nature protection

  • This layer contains information on potentially polluted sites (sites where use could have caused soil contamination). An entry in the database does not necessarily mean that the soil is polluted.

  • The method used for the measurement of dust deposition is the standard Bergerhoff method with the corresponding collection instrument. The measurement points of the Bergerhoff network are almost always located near industrial sites known for their high dust emissions (e. g. steel and metal-producing industries).

  • The quiet urban landscape areas include relatively large, continuous open spaces of at least regional importance with a high recreational function and corresponding development for leisure and recreation. Its importance lies in the balancing function to the noisy and densely populated areas of the agglomeration of Luxembourg. The quiet urban landscape close to the residential area allows, for example, extensive walks with only occasional crossing of areas with higher noise levels.

  • The quiet areas in rural areas include large, cohesive and intact open spaces of supraregional importance with a high recreational function and corresponding development for leisure and recreation. These spacious areas allow for example extensive walks without crossing noisy areas.

  • The measurement campaign was suggested and initiated by Schroeder&Associates as part of the Silent Cities Project, a large-scale participatory environmental monitoring program to document an exceptional change in the urban soundscape due to the economic downturn caused by the restrictions of the COVID-19 pandemic. The Environmental Administration mandated Schroeder&Associés, as a specialized and accredited office, to carry out noise level measurements at 10 pre-selected immission points. In the end, 13 immission points were chosen, now called "IP (Immission Point)", located on the territory of the City of Luxembourg (Millebaach, Cessange, Gasperich, blvd. Royal, Glacis), the Commune of Esch-sur-Alzette (Gare), the Commune of Dudelange (rte de Luxembourg), the Commune of Sanem (Belvaux), the Commune of Mondercange (Pontpierre), the Commune of Diekirch (Sauerwiss), the Commune of Mersch (Lankheck), the Commune of Ettelbrück (rue Pierre Wiser) and the Commune of Walferdange (Heisdorf). Containment measures have led to a strong decrease in human presence in public space. The means of transport (private and public), as well as work and leisure activities, have been considerably reduced. The sounds produced by these activities have decreased in intensity. The purpose of the mission was to measure sound pressure levels in order to collect a sufficient and representative amount of data to produce, through statistical processing, noise indicators representative of the noise environment at the point of immission in the context of the progressive deconfinement after the lock-down decreed from March 15. For 8 of the 13 immission points, noise level data collected during a measurement campaign in 2019 are available. This makes it possible to compare the values established in 2019 with the current values, respectively to observe the evolution of the soundscape during the phase of progressive deconfinement with respect to these reference values.