{"id":416,"date":"2022-09-07T09:04:30","date_gmt":"2022-09-07T09:04:30","guid":{"rendered":"https:\/\/hiilipuu-prod-22.atm.helsinki.fi\/hiilipuu\/?p=416"},"modified":"2022-09-07T09:04:31","modified_gmt":"2022-09-07T09:04:31","slug":"hur-kan-vi-modell-marksandningen","status":"publish","type":"post","link":"https:\/\/www.hiilipuu.fi\/index.php\/sv\/2022\/09\/07\/hur-kan-vi-modell-marksandningen\/","title":{"rendered":"Hur kan vi modell marksandningen?"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>Efter flera \u00e5r av matningar f\u00e5r man en hel del information om markrespirationen. Vi vet ungef\u00e4r hur hastighet av marks\u00e4ndningen best\u00e4ms av de f\u00f6randrare milj\u00f6f\u00f6rh\u00e5llanden. Markrespirationen f\u00f6r\u00e4ndringar exponentiell n\u00e4r temperatur \u00f6kar och detsamma g\u00e4ller f\u00f6r v\u00e4xt andning. Marks respiration f\u00f6rdubblar ungef\u00e4r n\u00e4r temperatur stiger 10 grader. Responsen p\u00e5 temperatur kan falla n\u00e4r marken vattentillg\u00e5ngen (REW) \u00e4r l\u00e5g. Mikrober bryter ner det organiska materialet och detta sker i markvatten p\u00e5 utan av partiklarna. s\u00f6nder d\u00f6tt organiska material, vilket sker av markvatten. I torra marken den r\u00f6relse av mikrober saktar ner och det reducerar markrespirationen. V\u00e4xternas r\u00f6tter andning saktar ner ocks\u00e5 i det torka landet.<\/p>\n\n\n\n<p>Effekten av temperatur and lufthastighet f\u00f6r marksandningen (R) kan uttryckas som en matematisk ekvation:<\/p>\n\n\n\n<p>R = Max { 0 , f(REW) * r<sub>0<\/sub> * q<sub>10<\/sub><sup>T\/10<\/sup> \u2013 c<sub>r<\/sub><\/p>\n\n\n\n<p>R beskrives marksandning av kol, var r<sub>0<\/sub> =1.1 \u00b5mol m<sup>\u20132<\/sup> s<sup>\u20131<\/sup>, q<sub>10<\/sub>=2.4, c<sub>r<\/sub>=0.5 \u00b5mol m<sup>\u20132<\/sup> s<sup>\u20131<\/sup> och<\/p>\n\n\n\n<p>f(REW) = Min { 1,&nbsp; Max { 0,&nbsp; (REW+d<sub>rew<\/sub>) \/ REW<sub>crit <\/sub>} }<\/p>\n\n\n\n<p>var d<sub>rew<\/sub>=0.1 och REW<sub>crit<\/sub>=0.6.<\/p>\n\n\n\n<p>Mer information om marksandningen hittar du i artiklen: Pumpanen, J., Ilvesniemi, H. and Hari, P. 2003. A process-based model for predicting soil carbon dioxide efflux and concentration. Soil Science Society of America.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"653\" height=\"510\" src=\"https:\/\/hiilipuu-prod-22.atm.helsinki.fi\/hiilipuu\/wp-content\/uploads\/2022\/09\/Hengitys_REW_0.png\" alt=\"\" class=\"wp-image-417\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"688\" height=\"497\" src=\"https:\/\/hiilipuu-prod-22.atm.helsinki.fi\/hiilipuu\/wp-content\/uploads\/2022\/09\/IlmanT_hengitys_0.png\" alt=\"\" class=\"wp-image-418\"\/><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Efter flera \u00e5r av matningar f\u00e5r man en hel del information om markrespirationen. Vi vet ungef\u00e4r hur hastighet av marks\u00e4ndningen best\u00e4ms av de f\u00f6randrare milj\u00f6f\u00f6rh\u00e5llanden. Markrespirationen f\u00f6r\u00e4ndringar exponentiell n\u00e4r temperatur \u00f6kar och detsamma g\u00e4ller f\u00f6r v\u00e4xt andning. Marks respiration f\u00f6rdubblar ungef\u00e4r n\u00e4r temperatur stiger 10 grader. Responsen p\u00e5 temperatur kan falla n\u00e4r marken vattentillg\u00e5ngen (REW)&hellip;&nbsp;<a href=\"https:\/\/www.hiilipuu.fi\/index.php\/sv\/2022\/09\/07\/hur-kan-vi-modell-marksandningen\/\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Hur kan vi modell marksandningen?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[27],"tags":[],"class_list":["post-416","post","type-post","status-publish","format-standard","hentry","category-artiklar"],"_links":{"self":[{"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/posts\/416","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/comments?post=416"}],"version-history":[{"count":1,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/posts\/416\/revisions"}],"predecessor-version":[{"id":419,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/posts\/416\/revisions\/419"}],"wp:attachment":[{"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/media?parent=416"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/categories?post=416"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/tags?post=416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}