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From 1 - 10 / 2018
  • The Regional Stream Sediment Geochemical Mapping data set gives information on the elemental concentrations in organic sediments of small headwater streams. The samples have been taken from small headwater streams (catchment area under 30 km2) in the late summer of 1990. Sampling has been repeated for about every fourth point during the years 1995, 2000 and 2006. The number of samples was 1162 in 1990 (at a density of one sample / 300 km2), 286 in 1995, 286 in 2000 and 249 in 2006. The data set covers the whole of Finland. Stream water samples have also been taken at the same time. Sampling, processing and analysis methods have been described in the Geochemical Atlas of Finland, Part 3, p. 27 - 30 (Lahermo et. al 1996). Field observations, coordinates and element concentrations determined from samples have been made into a database, in which each record represents one sample point. The data for each sampling year have been recorded on different tables. The method of analysis is referred to with a four-character method code. The codes are as follows: 503H = mercury determination using the cold vapour method 503P = nitric acid extraction in a microwave oven, measurement with ICP-AES 503M = nitric acid extraction in a microwave oven, measurement with ICP-MS 820L = carbon, hydrogen and nitrogen determination with a LECO analyser. The element concentration data include a numerical concentration value (as mg kg-1 or ppm) and possibly a check mark. The concentration is recorded as a variable, which has a name that comprises the chemical symbol for the element and the code for the method of analysis. For example AS_503M is arsenic (As) concentration, which is determined with the ICP-MS method (503M). The next variable has a check mark, for example AS_503MT. If the numerical value following the check mark is ‘>’ or '‘<’ then the number recorded in the concentration field is the determination limit of the chemical analytical method used and the actual concentration is less than this value. If the check mark is an exclamation mark (!), the analytical result is smaller than the determination limit of the analytical method use but the (unreliable) value obtained with the measuring instrument has been entered in the database. There is no data are if the check mark is a 'x'. The original purpose of the Regional Stream Water Geochemical Mapping data set was national general geochemical mapping and the basic assessment of environmental state. Other uses are, for example, the assessment of changes in environmental state and determination of the baseline concentrations of surface water as part of the evaluation of the chemical state of catchment areas in accordance with the Water Framework Directive of the EU. The original purpose of the Regional Stream Water Geochemical Mapping data set was national general geochemical mapping and the basic assessment of environmental state. Other uses are, for example, the assessment of changes in environmental state and determination of the baseline concentrations of surface water as part of the evaluation of the chemical state of catchment areas in accordance with the Water Framework Directive of the EU.

  • The Arctic SDI Gazetteer Service is a service that contains authoritative place names data from the arctic area. The service can be used for searching place names and performing reverse geocoding. The service contains about 2.87 million place name locations with about 3.15 million place names. It contains data from following sources: * Canada (Natural Resources Canada, updated: 02/2018) * Denmark (including Greenland) (SDFE, updated: 05/2017) * Finland (National Land Survey of Finland, updated: 04/2017) * GEBCO Undersea feature names gazetteer (updated: 04/2019) * Iceland (National Land Survey of Iceland, updated: 08/2017) * Norway (Norwegian Mapping Authority, updated: 08/2017) * Russia (Russian Mapping Agency, updated: 04/2019) * Sweden (Swedish National Mapping Agency, updated: 05/2017) * USA (US Geological Survey, updated: 05/2017)

  • Elevation zones is a raster dataset that visualises elevation of the terrain. The product covers the whole of Finland. There are four product versions available in which the pixel sizes are 32, 64, 128 and 512 metres. The dataset does not contain elevation values; it is a colour image that visualises the height of the terrain above sea level as zones. The sea is shown in light blue in the elevation zone. The product Elevation zones is available as a version that covers the whole country and as versions that cover a certain area. The product belongs to the open data of the National Land Survey of Finland.

  • Paikkatietohakemisto is a national metadata discovery service.

  • The technical harvesting potential of logging residues and stumps from final fellings can be defined as the maximum potential procurement volume of these available from the Finnish forests based on the prevailing guidelines for harvesting of energy wood. The potentials of logging residues and stumps have been calculated for fifteen NUTS3-based Finnish regions covering the whole country (Koljonen et al. 2017). The technical harvesting potentials were estimated using the sample plots of the eleventh national forest inventory (NFI11) measured in the years 2009–2013. First, a large number of sound and sustainable management schedules for five consecutive ten-year periods were simulated for each sample plot using a large-scale Finnish forest planning system known as MELA (Siitonen et al. 1996; Redsven et al. 2013). MELA simulations consisted of natural processes and human actions. The ingrowth, growth, and mortality of trees were predicted based on a set of distance-independent tree-level statistical models (e.g. Hynynen et al. 2002) included in MELA and the simulation of the stand (sample plot)-level management actions was based on the current Finnish silvicultural guidelines (Äijälä et al. 2014) and the guidelines for harvesting of energy wood (Koistinen et al. 2016). Final fellings consisted of clear cutting, seed tree cutting, and shelter-wood cutting, but only the clear-cutting areas were utilized for energy wood harvesting. As both logging residues and stumps are byproducts of roundwood removals, the technical potentials of chips have to be linked with removals of industrial roundwood. Future potentials were assumed to materialize when the industrial roundwood fellings followed the level of maximum sustainable removals. The maximum sustainable removals were defined such that the net present value calculated with a 4% discount rate was maximized subject to non-declining periodic industrial roundwood and energy wood removals and net incomes, and subject to the saw log removal remaining at least at the level of the first period. There were no constraints concerning tree species selection, cutting methods, age classes, or the growth/drain ratio in order to efficiently utilize the dynamics of forest structure. The felling behaviour of the forest owners was not taken into account either. For the present situation in 2015, the removal of industrial roundwood was assumed to be the same as the average level in 2008–2012. Fourth, the technical harvesting potentials were derived by retention of 30% of the logging residues onsite (Koistinen et al. 2016) and respectively by retention of 16–18% of stump biomass (Muinonen et al. 2013). Next, the regional potentials were allocated to municipalities proportionally to their share of mature forests (MetINFO 2014). Subsequently, the municipality-level potentials were spread evenly on a raster grid at 1 km × 1 km resolution. Only grid cells on Forests Available for Wood Supply (FAWS) were considered in this operation. Here, FAWS was defined as follows: First, forest land was extracted from the Finnish Multi-Source National Forest Inventory (MS-NFI) 2013 data (Mäkisara et al. 2016). Second, restricted areas were excluded from forest land. The restricted areas consisted of nationally protected areas (e.g. nature parks, national parks, protection programme areas). References Äijälä O, Koistinen A, Sved J, Vanhatalo K, Väisänen P (2014) Metsänhoidon suositukset [Guidelines for sustainable forest management]. Metsätalouden kehittämiskeskus Tapion julkaisuja. Hynynen J, Ojansuu R, Hökkä H, Salminen H, Siipilehto J, Haapala P (2002) Models for predicting the stand development – description of biological processes in MELA system. The Finnish Forest Research Institute Research Papers 835. Koistinen A, Luiro J, Vanhatalo K (2016) Metsänhoidon suositukset energiapuun korjuuseen, työopas [Guidelines for sustainable harvesting of energy wood]. Metsäkustannus Oy, Helsinki. Koljonen T, Soimakallio S, Asikainen A, Lanki T, Anttila P, Hildén M, Honkatukia J, Karvosenoja N, Lehtilä A, Lehtonen H, Lindroos TJ, Regina K, Salminen O, Savolahti M, Siljander R (2017) Energia ja ilmastostrategian vaikutusarviot: Yhteenvetoraportti. [Impact assessments of the Energy and Climate strategy: The summary report.] Publications of the Government´s analysis, assessment and research activities 21/2017. Mäkisara K, Katila M, Peräsaari J, Tomppo E (2016) The Multi-Source National Forest Inventory of Finland – methods and results 2013. Natural resources and bioeconomy studies 10/2016. Muinonen E, Anttila P, Heinonen J, Mustonen J (2013) Estimating the bioenergy potential of forest chips from final fellings in Central Finland based on biomass maps and spatially explicit constraints. Silva Fenn 47. Redsven V, Hirvelä H, Härkönen K, Salminen O, Siitonen M (2013) MELA2012 Reference Manual. Finnish Forest Research Institute. Siitonen M, Härkönen K, Hirvelä H, Jämsä J, Kilpeläinen H, Salminen O, Teuri M (1996) MELA Handbook. Metsäntutkimuslaitoksen tiedonantoja 622. ISBN 951-40-1543-6.

  • The EMODnet (European Marine Observation and Data network) Geology project collects and harmonizes marine geological data from the European sea areas to support decision making and sustainable marine spatial planning. The partnership includes 39 marine organizations from 30 countries. The partners, mainly from the marine departments of the geological surveys of Europe (through the Association of European Geological Surveys-EuroGeoSurveys), have assembled marine geological information at various scales from all European sea areas (e.g. the White Sea, Baltic Sea, Barents Sea, the Iberian Coast, and the Mediterranean Sea within EU waters). This dataset includes EMODnet seabed substrate maps at a scale of 1:60 000 from the European marine areas. Traditionally, European countries have conducted their marine geological surveys according to their own national standards and classified substrates on the grounds of their national classification schemes. These national classifications are harmonised into a shared EMODnet schema using Folk's sediment triangle with a hierarchy of 16, 7 and 5 substrate classes. The data describes the seabed substrate from the uppermost 30 cm of the sediment column. Further information about the EMODnet Geology project is available on the portal (http://www.emodnet-geology.eu/).

  • FIN Järvien vesikasvillisuusvyöhykettä kuvaava aineisto 1971 suomalaisesta järvivesimuodostumasta. Aineisto on polygonivektorimuodossa, jossa yksittäisen järven vesikasvivyöhyke esitetään moniosaisena polygonina. Vesikasvillisuusvyöhyke koostuu ilmakuvilta erottuvasta vedenpinnan yläpuolisesta (ilmaversoinen ja kelluslehtinen) ja aivan vedenpinnan tasolle yltävästä uposlehtisestä kasvillisuudesta. Vesikasvillisuusvyöhykkeen ja järven 0–3 metrin syvyysvyöhykkeen perusteella järville on laskettu kasvittumisaste-niminen tunnusluku, jota käytetään järvien ekologisen tilan arvioinnissa kuvaamaan rehevöitymisen aiheuttamaa kasvillisuuden runsastumista. Vesikasvillisuusvyöhyke on analysoitu Picterra-yrityksen koneoppimismalleilla Maanmittauslaitoksen hallinnoimista väri-infra- eli vääräväriortokuvista vuosilta 2012-2023. Vyöhykkeen analysointi on rajattu 1.7.–10.9. otettuihin ortokuviin. Lisäksi analysointi on rajattu seuraaviin vesienhoidon suunnittelun 3. suunnittelukaudella määritettyihin järvityyppeihin: • Pienet humusjärvet • Keskikokoiset humusjärvet • Runsashumuksiset järvet • Matalat humusjärvet • Matalat runsashumuksiset järvet Aineisto sisältää 698 järvivesimuodostumalta ilmakuvatulkinnan useammalta vuodelta. Havaittu kasvittumisaste on laskettu niille 977 järvivesimuodostumalle, joilta oli saatavissa tieto 0–3 metrin syvyysvyöhykkeestä. Aineistoon on jätetty järviä ilman syvyysaineistoa ja siten kasvittumisasteen laskentaa siinä tarkoituksessa, jotta aineistoa voidaan tarvittaessa hyödyntää muuhunkin kuin kasvittumisaste-muuttujaan perustuvaan tila-arviointiin. Aineistolle on tehty silmämääräinen tarkastus virheellisten havaintojen poistamiseksi. Aineisto voi silti sisältää väärintulkintoja. Kasvittumisasteen luontaisen vaihtelun mallintamisesta saadut tunnusluvut, kuten odotetut kasvittumisasteet ja kasvittumisasteeseen perustuva ekologinen tilaluokka, ovat ympäristöhallinnon asiantuntijoiden katseltavissa Pisara-järjestelmässä. Käyttötarkoitus: Ympäristöhallinnon tehtävien tueksi vesien tilan arviointiin. Järvien ekologisen tilan arviointia tekevät asiantuntijat käyttävät paikkatietoaineistoa ilmakuvatulkinnan laadun arvioimiseen yksittäisellä järvellä. Asiasanat: kaukokartoitus, ilmakuvat, vesikasvillisuus, seuranta, ekologinen tila Lisätietoja: https://geoportal.ymparisto.fi/meta/julkinen/dokumentit/Jarvien_vesikasvillisuusvyohykkeet.pdf https://vesi.fi/aineistopankki/koneoppimispohjaiseen-ilmakuvatulkintaan-perustuva-jarvien-vesikasvillisuuden-tilanarviointi/ ENG This data describes lake macrophyte zone on 1971 Finnish lake waterbodies. The spatial features are represented as multi-part polygons. The attributes are in Finnish. The zone represents emergent and floating-leaved vegetation plus submerged vegetation just above the surface of water. Together with lake bathymetric data, the percentage of vegetated littoral (PVL) was calculated. The PVL is applied in ecological status assessment. Lake macrophyte zone was detected from color-infrared aerial orthophotos administered by the National Land Survey of Finland. The detections were performed with the help of a custom machine learning model trained using Picterra. The detections were applied to orthophotos in 2012-2013 which were filmed between 1st of July and 10th of September. The detections were limited to humic and humic-rich lake waterbodies. There are detections from multiple years for 698 lake waterbodies. Observed PVL were calculated on 977 lake waterbodies which have bathymetric data to identify the 0 to 3 meters deep littoral zone. To potentially utilize the data for more than just the PVL-based approach, the data also have detections on waterbodies without bathymetric data and therefore observed PVL. A visual inspection of the data has been performed to remove erroneous detections. The data may still contain misinterpretations. Purpose of use: Support of environmental administration in ecological status assessment. More information: https://geoportal.ymparisto.fi/meta/julkinen/dokumentit/Jarvien_vesikasvillisuusvyohykkeet.pdf https://vesi.fi/aineistopankki/koneoppimispohjaiseen-ilmakuvatulkintaan-perustuva-jarvien-vesikasvillisuuden-tilanarviointi/

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    Elevation model 10 m depicts the elevation of the ground surface of the whole of Finland in relation to sea level. Its grid size is 10 m x 10 m and the accuracy of elevation data 1.4 metres. The product belongs to the open data of the National Land Survey of Finland.

  • NLS-FI INSPIRE Download Service (WFS) for Cadastral Parcels Theme is an INSPIRE compliant direct access Web Feature Service. It contains the following INSPIRE feature types: BasicPropertyUnit, CadastralParcel, CadastralBoundary. The service is based on the NLS-FI INSPIRE Cadastral Parcels dataset. The dataset is administrated by the National Land Survey of Finland.