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[{"key": "dc.contributor.advisor", "value": "Rautakoski, Helena", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Lohila, Annalea", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Kyt\u00f6viita, Minna-Maarit", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Suikula, Juulia", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2023-05-10T05:51:23Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2023-05-10T05:51:23Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2023", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/86841", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Avohakkuita sis\u00e4lt\u00e4v\u00e4 jaksollinen kasvatus on yleisin mets\u00e4nkasvatusmenetelm\u00e4 Suomen ja havumets\u00e4vy\u00f6hykkeen turvemetsiss\u00e4. Ekologisesti kest\u00e4v\u00e4mm\u00e4ksi vaihtoehdoksi avohakkuille on esitetty jatkuvaa kasvatusta, jossa vedenpinnan tason sek\u00e4 metaani- ja typpioksiduulip\u00e4\u00e4st\u00f6jen odotetaan kasvavan maltillisemmin kuin jaksollisen kasvatuksen menetelmiss\u00e4. Jatkuvan kasvatuksen suosimista pidet\u00e4\u00e4n ojitetuissa ja erityisesti reheviss\u00e4 turvemetsiss\u00e4 potentiaalisena keinona v\u00e4hent\u00e4\u00e4 Suomen maank\u00e4ytt\u00f6sektorin ilmastop\u00e4\u00e4st\u00f6j\u00e4, mutta lis\u00e4selvityksi\u00e4 hakkuutapojen ilmastovaikutuksista tarvitaan. T\u00e4ss\u00e4 Pro gradu -tutkielmassa selvitettiin manuaalisilla kammiomittauksilla Etel\u00e4-Suomessa sijaitsevan turvemets\u00e4n avo- ja osittaishakkuualueen sek\u00e4 hakkaamattoman kontrollialueen eroja mets\u00e4npohjan metaani- ja typpioksiduulivirroissa. Lis\u00e4ksi tarkasteltiin vedenpinnan tason, turpeen l\u00e4mp\u00f6tilan ja maaper\u00e4n ravinteisuuden yhteyksi\u00e4 kasvihuonekaasuvoihin. Metaanin nielu oli suurempi osittaishakkuu- ja kontrollialueella verrattuna avohakkuualueeseen. Syvemm\u00e4ll\u00e4 vedenpinnan tasolla havaittiin kasvattava vaste metaanin nieluun. Tutkimuksen tulokset viittaavat siihen, ett\u00e4 metaanin osalta avohakkuun ilmastovaikutukset ovat suuremmat kuin osittaishakkuun. Osittaishakkuualue oli suurempi typpioksiduulin l\u00e4hde verrattuna avohakkuu- ja kontrollialueeseen. Tulokset korostavat ravinteisuuden huomiointia turvemetsien k\u00e4sittelyss\u00e4 nyt ja tulevaisuudessa typpioksiduulip\u00e4\u00e4st\u00f6jen v\u00e4hent\u00e4miseksi. Tutkimuksen tuloksia voidaan hy\u00f6dynt\u00e4\u00e4 jatkuvan kasvatuksen mahdollisuuksien selvitt\u00e4misess\u00e4 ilmastonmuutoksen hillinn\u00e4ss\u00e4 mets\u00e4taloussektorilla.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Even-aged management including clearcutting is the most common forestry practising method in Finland and the boreal region. Continuous cover forestry has been suggested as a more sustainable alternative to clearcutting, in which the water table level and methane and nitrous oxide emissions are expected to raise more than in continuous cover forestry. However, more research is needed to develop forest management strategies that minimize emissions from drained peatland forests. The aim of this Master's thesis was to investigate the differences in methane and nitrous oxide fluxes from the forest floor between partial harvest, clearcut, and control sites in a drained peatland forest located in Southern Finland. The study used manual chamber method to measure the methane and nitrous oxide fluxes, and examined the effects of water table level, peat temperature, and nutrient level on these fluxes. The results of the study showed that the methane sink was smaller in the clearcut compared to the partial harvest and control sites, which was explained especially by higher water table level. The results suggest that, for methane, the climate impacts of clearcuts are greater than of continuous cover forestry. The study highlights the importance of taking nutrient level into consideration in the management of peatland forests now and in the future, in order to reduce nitrogen oxide emissions. The findings offer important information on climate change mitigation methods in forest management and could help guide future efforts to manage peatland forests in a more sustainable way.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2023-05-10T05:51:23Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2023-05-10T05:51:23Z (GMT). No. of bitstreams: 0\n Previous issue date: 2023", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "46", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "CH4", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "N2O", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Mets\u00e4npohjan metaani- ja typpioksiduulivuot avo- ja osittaishakatussa ojitetussa turvemets\u00e4ss\u00e4", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202305102922", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Bio- ja ymp\u00e4rist\u00f6tieteiden laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Biological and Environmental Science", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ekologia ja evoluutiobiologia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ecology and evolutionary biology", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.collaborator", "value": "public", "language": "", "element": "contractresearch", "qualifier": "collaborator", "schema": "yvv"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "yvv.contractresearch.initiative", "value": "student", "language": "", "element": "contractresearch", "qualifier": "initiative", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.copyright", "value": "\u00a9 The Author(s)", "language": null, "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "restrictedAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4011", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "dityppioksidi", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "jatkuva kasvatus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mets\u00e4talous", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mets\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "metaani", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "p\u00e4\u00e4st\u00f6t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ilmastonmuutokset", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kasvihuonekaasut", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mets\u00e4ntutkimus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "suomets\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "harvennus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mets\u00e4nhoito", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "The author has not given permission to make the work publicly available electronically. Therefore the material can be read only at the archival workstation at Jyv\u00e4skyl\u00e4 University Library (https://kirjasto.jyu.fi/collections/archival-workstation).", "language": "en", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "Tekij\u00e4 ei ole antanut lupaa avoimeen julkaisuun, joten aineisto on luettavissa vain Jyv\u00e4skyl\u00e4n yliopiston kirjaston arkistoty\u00f6semalta. Ks. https://kirjasto.jyu.fi/kokoelmat/arkistotyoasema..", "language": "fi", "element": "rights", "qualifier": "accessrights", "schema": "dc"}]
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