{"id":276,"date":"2022-09-02T06:34:48","date_gmt":"2022-09-02T06:34:48","guid":{"rendered":"https:\/\/hiilipuu-prod-22.atm.helsinki.fi\/hiilipuu\/?p=276"},"modified":"2022-09-02T06:34:49","modified_gmt":"2022-09-02T06:34:49","slug":"modelling-shoot-respiration","status":"publish","type":"post","link":"https:\/\/www.hiilipuu.fi\/index.php\/en\/2022\/09\/02\/modelling-shoot-respiration\/","title":{"rendered":"Modelling shoot respiration"},"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\" style=\"flex-basis:66.66%\">\n<p>Years of measurements have produced a lot of information on plant respiration. We know more or less how the respiration rate is related to the changing environmental conditions. In principle, respiration exponentially follows temperature. The temperature dependence, however, decreases in low soil water (REW).<\/p>\n\n\n\n<p>These dependencies may be expressed in a simple and straightforward mathematical model using Hyyti\u00e4l\u00e4-measured temperatures and soil water conditions:<\/p>\n\n\n\n<p>R = Max { 0,&nbsp; f(REW) * r<sub>0<\/sub>&nbsp;* q<sub>10<\/sub><sup>(T\/10)<\/sup>&nbsp;\u2013 c<sub>r<\/sub>&nbsp;}<\/p>\n\n\n\n<p>R means the rate of respiration (i.e. the CO<sub>2<\/sub>&nbsp;emission originating from respiration), T is&nbsp;<a href=\"http:\/\/hiilipuu.fi\/articles\/air-temperature\">temperature<\/a>&nbsp;and&nbsp;<a href=\"http:\/\/hiilipuu.fi\/articles\/soil-moisture\">REW<\/a>, the relative extractable water. At our measuring station in Hyyti\u00e4l\u00e4, r<sub>0<\/sub>=1.6 \u00b5mol m<sup>\u20132<\/sup>&nbsp;s<sup>\u20131<\/sup>, q<sub>10<\/sub>=1.5, c<sub>r<\/sub>=0.8 \u00b5mol m<sup>\u20132<\/sup>&nbsp;s<sup>\u20131<\/sup>&nbsp;and<\/p>\n\n\n\n<p>f(REW)= Min {1,&nbsp; Max { 0,&nbsp; (REW+d<sub>rew<\/sub>) \/ REW<sub>crit<\/sub>&nbsp;} }<\/p>\n\n\n\n<p>where d<sub>rew<\/sub>=0.05 and rew<sub>crit<\/sub>=0.35.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"347\" height=\"575\" src=\"https:\/\/hiilipuu-prod-22.atm.helsinki.fi\/hiilipuu\/wp-content\/uploads\/2022\/09\/R_en.png\" alt=\"\" class=\"wp-image-277\"\/><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Years of measurements have produced a lot of information on plant respiration. We know more or less how the respiration rate is related to the changing environmental conditions. In principle, respiration exponentially follows temperature. The temperature dependence, however, decreases in low soil water (REW). These dependencies may be expressed in a simple and straightforward mathematical&hellip;&nbsp;<a href=\"https:\/\/www.hiilipuu.fi\/index.php\/en\/2022\/09\/02\/modelling-shoot-respiration\/\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Modelling shoot respiration<\/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":[29],"tags":[],"class_list":["post-276","post","type-post","status-publish","format-standard","hentry","category-articles"],"_links":{"self":[{"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/posts\/276","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=276"}],"version-history":[{"count":1,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/posts\/276\/revisions"}],"predecessor-version":[{"id":278,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/posts\/276\/revisions\/278"}],"wp:attachment":[{"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/media?parent=276"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/categories?post=276"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/tags?post=276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}