Línurnar sýna friðunarsvæði, þar sem eldi laxfiska (fam. salmonidae) í sjókvíum er óheimilt skv. auglýsingu nr. 460/2004.

Ræktunarsvæði er afmarkað svæði sjávar nægjanlega stórt til að rúma þann ræktunarbúnað sem notaður er á viðkomandi svæði. Yfirleitt er um að ræða línur sem strekktar eru á milli flot bauja eða sérstaka ræktunarfleka með lóðréttar ræktunarlínur fáeina metra niður undir yfirborð sjávar . Svæðið er merkt með löglegum sjómerkjum þannig að sjófarendur eiga að geta varast þau, enda einnig merkt inn sjókort Landhelgisgæslunnar. Einungis er ræktuð Bláskel (Kræklingur).

Í markalaginu eru ýmis mörk lands og eru þetta allt flákalög og þau sýna eftirfarandi: skiptingu landsins eftir sveitarfélögum, skiptingu landsins eftir umdæmi sýslumanna, lögregluumdæmi og skiptingu landsins í dómstóla í héraði.

Eldissvæði er svæði sem úthlutað er rekstarleyfishafa. Rekstrarleyfishafi hefur þá heimild til að hafa eldisbúnað til að ala fisk innan þess svæðis skv. skilyrðum rekstrarleyfisins.

Umsóknin um Þingvelli á heimsminjaskrá var lögð fram í febrúar 2003 og var hún samþykkt á fundi heimsminjanefndar UNESCO í júlí 2004. Þingvellir eru þjóðgarður sem var með lögum stofnaður árið 1930.

The European Urban Atlas provides reliable, inter-comparable, high-resolution land use and land cover data for 800 Functional Urban Area (FUA) for the 2012 reference year in EEA39 countries. The spatial data can be downloaded together with a map for each FUA covered and a report with the metadata for the respective area. Additional information (product description, mapping guidance and class description) can be found here: https://land.copernicus.eu/user-corner/technical-library/urban-atlas-2012-mapping-guide-new Commission Directorate-General for Regional and Urban Policy and the Directorate-General for Enterprise and Industry in the frame of the EU Copernicus programme, with the support of the European Space Agency and the European Environment Agency.

The high resolution forest product consists of three types of (status) products and additional change products. The status products are available for the 2012 and 2015 reference years: 1. Tree cover density providing level of tree cover density in a range from 0-100% 2. Dominant leaf type providing information on the dominant leaf type: broadleaved or coniferous 3. A Forest type product. The forest type product allows to get as close as possible to the FAO forest definition. In its original (20m) resolution it consists of two products: 1) a dominant leaf type product that has a MMU of 0.5 ha, as well as a 30% tree cover density threshold applied, and 2) a support layer that maps, based on the dominant leaf type product, trees under agricultural use and in urban context (derived from CLC and high resolution imperviousness 2009 data). For the final 100m product trees under agricultural use and urban context from the support layer are removed. The high resolution forest change products comprise a simple tree cover density change product for 2012-2015 (% increase or decrease of real tree cover density changes). A verification of the Dominant Leaf Type layer was performed by the Institute of Nature Research during autumn of 2018 and the data and resulting report are made available on the NLSI websites.

Riparian zones represent transitional areas occurring between land and freshwater ecosystems, characterised by distinctive hydrology, soil and biotic conditions and strongly influenced by the stream water. They provide a wide range of riparian functions (e.g. chemical filtration, flood control, bank stabilization, aquatic life and riparian wildlife support, etc.) and ecosystem services. The Riparian Zones products support the objectives of several European legal acts and policy initiatives, such as the EU Biodiversity Strategy to 2020, the Habitats and Birds Directives and the Water Framework Directive. Green Linear Elements (GLE) are ecologically significant, structural landscape elements which act as important dispersion vectors of biodiversity. GLEs comprise hedgerows and lines of trees and offer a wide range of ecosystem services: they are linked to both landscape richness and fragmentation of habitats, with a direct potential for restoration, and contribute also to hazard protection. Green linear elements form part of the Green Infrastructure and are specifically addressed in the EU Biodiversity Strategy 2020. The GLE product provides reliable and detailed geospatial information on the occurrence and spatial distribution of: Small linear vegetation features such as hedgerows, scrub and tree rows with a minimum length of 100m and a width of up to 10m; Isolated patches of trees and scrub with a size between 500 m² and 0.5 ha. Green linear elements including trees and hedgerows with 100m minimum length and 500 m² Minimum Mapping Unit (MMU)

Eftirfarandi landshlutar eru sóttvarnaumdæmi, sbr. reglugerð 387/2015: Höfuðborgarsvæðið (Reykjavíkurborg, Seltjarnarnesbær, Kópavogsbær, Garðabær, Hafnarfjarðarkaupstaður, Mosfellsbær, Kjósarhreppur og fyrrum sveitarfélagið Þingvallasveit). Vesturland (Akraneskaupstaður, Hvalfjarðarsveit, Skorradalshreppur, Borgarbyggð, Eyja- og Miklaholtshreppur, Snæfellsbær, Grundarfjarðarbær, Helgafellssveit, Stykkishólmsbær, Dalabyggð, Reykhólahreppur, Strandabyggð, Kaldrananeshreppur, Árneshreppur og Húnaþing vestra). Vestfirðir (Vesturbyggð, Tálknafjarðarhreppur, Ísafjarðarbær, Bolungarvíkurkaupstaður og Súðavíkurhreppur). Norðurland (Húnavatnshreppur, Blönduósbær, Skagabyggð, Sveitarfélagið Skagaströnd, Sveitarfélagið Skagafjörður, Akrahreppur, Fjallabyggð, Dalvíkurbyggð, Hörgársveit, Eyjafjarðarsveit, Akureyrarkaupstaður, Svalbarðsstrandarhreppur, Grýtubakkahreppur, Þingeyjarsveit, Norðurþing, Tjörneshreppur, Skútustaðahreppur, Svalbarðshreppur og Langanesbyggð að frátöldum fyrrum Skeggjastaðahreppi). Austurland (Vopnafjarðarhreppur, Fljótsdalshérað, Fljótsdalshreppur, Borgarfjarðarhreppur, Seyðisfjarðarkaupstaður, Fjarðabyggð, Breiðdalshreppur, Djúpavogshreppur og fyrrum Skeggjastaðahreppur). Suðurland (Sveitarfélagið Ölfus, Hveragerðisbær, Grímsnes- og Grafningshreppur, Bláskógabyggð að frátöldu fyrrum sveitarfélaginu Þingvallasveit, Hrunamannahreppur, Sveitarfélagið Árborg, Flóahreppur, Ásahreppur, Skeiða- og Gnúpverjahreppur, Rangárþing ytra, Rangárþing eystra, Mýrdalshreppur, Skaftárhreppur, Sveitarfélagið Hornafjörður og Vestmannaeyjabær). Suðurnes (Sandgerðisbær, Sveitarfélagið Garður, Reykjanesbær, Grindavíkurbær og Sveitarfélagið Vogar).

The Urban Atlas provides pan-European comparable land use and land cover data for Functional Urban Areas (FUA). The Street Tree Layer (STL) is a separate layer from the Urban Atlas 2012 LU/LC layer produced within the level 1 urban mask for each FUA. It includes contiguous rows or a patches of trees covering 500 m² or more and with a minimum width of 10 meter over "Artificial surfaces" (nomenclature class 1) inside FUA (i.e. rows of trees along the road network outside urban areas or forest adjacent to urban areas should not be included). Urban Atlas is a joint initiative of the European Commission Directorate-General for Regional and Urban Policy and the Directorate-General for Enterprise and Industry in the frame of the EU Copernicus programme, with the support of the European Space Agency and the European Environment Agency.