{"id":3515,"date":"2024-05-02T12:14:47","date_gmt":"2024-05-02T09:14:47","guid":{"rendered":"https:\/\/www.acccflagship.fi\/?p=3515"},"modified":"2024-05-02T12:15:02","modified_gmt":"2024-05-02T09:15:02","slug":"uusi-tutkimus-tarkentaa-kasitysta-ojitettujen-suometsien-typpioksiduulipaastoista","status":"publish","type":"post","link":"https:\/\/www.acccflagship.fi\/index.php\/2024\/05\/02\/uusi-tutkimus-tarkentaa-kasitysta-ojitettujen-suometsien-typpioksiduulipaastoista\/","title":{"rendered":"Uusi tutkimus tarkentaa k\u00e4sityst\u00e4 ojitettujen suometsien typpioksiduulip\u00e4\u00e4st\u00f6ist\u00e4"},"content":{"rendered":"\n

Voimakkaana kasvihuonekaasuna pidetyn typpioksiduulin alueellista ja ajallista vaihtelua ymm\u00e4rret\u00e4\u00e4n heikosti, mik\u00e4 tekee typpioksiduulin p\u00e4\u00e4st\u00f6jen arvioimisesta vaikeaa. Ilmatieteen laitoksen yhteisty\u00f6ss\u00e4 LUKEn ja Helsingin yliopiston kanssa tekem\u00e4 tutkimus hy\u00f6dynsi reilun nelj\u00e4n vuoden yht\u00e4jaksoista typpioksiduulip\u00e4\u00e4st\u00f6n mittausaikasarjaa ojitetusta suomets\u00e4st\u00e4. Tutkitun alueen vuotuiset typpioksiduulip\u00e4\u00e4st\u00f6t olivat suuria, mutta ne vaihtelivat merkitt\u00e4v\u00e4sti sek\u00e4 paikallisesti ett\u00e4 vuosien v\u00e4lill\u00e4.<\/p>\n\n\n\n

P\u00e4\u00e4st\u00f6t olivat suurimmillaan sateisempina kesin\u00e4 ja v\u00e4h\u00e4lumisina talvina, kun taas kuivina kesin\u00e4 p\u00e4\u00e4st\u00f6t olivat pieni\u00e4. Tutkimuksen tulokset viittaavat siihen, ett\u00e4 v\u00e4h\u00e4lumisten talvien yleistyminen kasvattaa typpioksiduulip\u00e4\u00e4st\u00f6j\u00e4. Sulan maan aikaan typpioksiduulin p\u00e4\u00e4st\u00f6t reagoivat sateiden j\u00e4lkeiseen maankosteuden ja pohjaveden pinnan nousuun usean p\u00e4iv\u00e4n viiveell\u00e4. Paikallinen vaihtelu oli my\u00f6s julkaistussa tutkimuksessa suurta, mutta p\u00e4\u00e4st\u00f6vaihtelu pysyi samanlaisena s\u00e4\u00e4olosuhteiltaan hyvinkin erilaisina vuosina. T\u00e4m\u00e4 viittaa siihen, ett\u00e4 p\u00e4\u00e4st\u00f6jen paikallista vaihtelua s\u00e4\u00e4telee sellaiset tekij\u00e4t, jotka eiv\u00e4t muutu ymp\u00e4rist\u00f6olojen vaihdellessa. Tutkimus tarkensi k\u00e4sityst\u00e4 suometsien typpioksiduulip\u00e4\u00e4st\u00f6jen paikallisest\u00e4 ja ajallisesta vaihtelusta, mik\u00e4 auttaa kehitt\u00e4m\u00e4\u00e4n maank\u00e4yt\u00f6n kasvihuonekaasup\u00e4\u00e4st\u00f6j\u00e4 ennustavia p\u00e4\u00e4st\u00f6laskentamalleja.<\/p>\n\n\n\n

Linkki IL:n tiedeuutiseen:\u00a0https:\/\/www.ilmatieteenlaitos.fi\/uutinen\/1A6Vi2lXwBhIO3tXKiMe0n<\/a><\/p>\n\n\n\n

\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

Voimakkaana kasvihuonekaasuna pidetyn typpioksiduulin alueellista ja ajallista vaihtelua ymm\u00e4rret\u00e4\u00e4n heikosti, mik\u00e4 tekee typpioksiduulin p\u00e4\u00e4st\u00f6jen arvioimisesta vaikeaa. Ilmatieteen laitoksen yhteisty\u00f6ss\u00e4 LUKEn ja Helsingin yliopiston kanssa tekem\u00e4 tutkimus hy\u00f6dynsi reilun nelj\u00e4n vuoden yht\u00e4jaksoista typpioksiduulip\u00e4\u00e4st\u00f6n mittausaikasarjaa ojitetusta suomets\u00e4st\u00e4. Tutkitun alueen vuotuiset typpioksiduulip\u00e4\u00e4st\u00f6t olivat suuria, mutta ne vaihtelivat merkitt\u00e4v\u00e4sti sek\u00e4 paikallisesti ett\u00e4 vuosien v\u00e4lill\u00e4. P\u00e4\u00e4st\u00f6t olivat suurimmillaan sateisempina kesin\u00e4 […]<\/p>\n","protected":false},"author":1,"featured_media":2541,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_vp_format_video_url":"","_vp_image_focal_point":{"x":0.5,"y":0.5500000000000000444089209850062616169452667236328125},"footnotes":""},"categories":[140,25],"tags":[55],"class_list":["post-3515","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-impact-en","category-uncategorized-en","tag-accc"],"featured_image_src":"https:\/\/www.acccflagship.fi\/wp-content\/uploads\/ACCC-news-1.png","author_info":{"display_name":"mkulmala","author_link":"https:\/\/www.acccflagship.fi\/index.php\/author\/mkulmala\/"},"_links":{"self":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts\/3515","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/comments?post=3515"}],"version-history":[{"count":1,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts\/3515\/revisions"}],"predecessor-version":[{"id":3517,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts\/3515\/revisions\/3517"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/media\/2541"}],"wp:attachment":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/media?parent=3515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/categories?post=3515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/tags?post=3515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}