{"id":503339,"date":"2022-10-24T10:23:15","date_gmt":"2022-10-24T07:23:15","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/co2-ventilation-breakthrough-could-turn-city-rooftops-into-bumper-vegetable-gardens\/"},"modified":"2022-10-24T10:23:15","modified_gmt":"2022-10-24T07:23:15","slug":"co2-ventilation-breakthrough-could-turn-city-rooftops-into-bumper-vegetable-gardens","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/co2-ventilation-breakthrough-could-turn-city-rooftops-into-bumper-vegetable-gardens\/","title":{"rendered":"#CO2 ventilation breakthrough could turn city rooftops into bumper vegetable gardens"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a40b4e993687\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a40b4e993687\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/co2-ventilation-breakthrough-could-turn-city-rooftops-into-bumper-vegetable-gardens\/#%E2%80%9CCO2_ventilation_breakthrough_could_turn_city_rooftops_into_bumper_vegetable_gardens%E2%80%9D\" >&#8220;CO2 ventilation breakthrough could turn city rooftops into bumper vegetable gardens&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CCO2_ventilation_breakthrough_could_turn_city_rooftops_into_bumper_vegetable_gardens%E2%80%9D\"><\/span>&#8220;CO2 ventilation breakthrough could turn city rooftops into bumper vegetable gardens&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/rooftops.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/rooftops.jpg\" data-sub-html=\"Credit: Pixabay\/CC0 Public Domain\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/rooftops.jpg\" alt=\"rooftops \" title=\"Credit: Pixabay\/CC0 Public Domain\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Credit: Pixabay\/CC0 Public Domain<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>As the world&#8217;s cities grow, the hunt is on for ways to make them greener, more sustainable, and more livable. Rooftop farms and gardens that take advantage of underutilized roof space are a popular option, providing new food resources while simultaneously cooling the surrounding area, increasing building insulation, and improving air quality. But the conditions on rooftops\u2014greater solar radiation, more wind exposure, lesser soil moisture\u2014often mean that plants are smaller and less healthy. A team led by Dr. Sarabeth Buckley, now at the University of Cambridge, theorized that repurposing the CO<sub>2<\/sub> from building exhaust as a kind of fertilizer might help counter some of these challenges. To explore this, they grew corn and spinach on the roof of a campus building at Boston University.<\/p>\n<p>                                                                                &#8220;We wanted to test whether there is an unt<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>ed resource inside buildings that could be used to make plants grow larger in rooftop farms,&#8221; said Buckley, whose team named their experimental garden BIG GRO and published their work today in <i>Frontiers in Sustainable Food Systems<\/i>. &#8220;Creating more favorable conditions that increase growth could help make rooftop farms more successful and therefore more viable options for installation on buildings.&#8221;<\/p>\n<p><b>Rooftop vegetable gardens<\/b><\/p>\n<p>Corn and spinach were chosen because they are common edible plants and because they use different pathways to photosynthesize, one of which (C3, used by spinach but not corn) is more sensitive to elevated CO<sub>2<\/sub> levels and should benefit more from the exhaust vents&#8217; CO<sub>2<\/sub> content. Corn acted as a control to see how other aspects of placement close to the exhaust vents\u2014for example, the higher temperature relative to the time of year when the experiments were conducted\u2014affected plant growth.<\/p>\n<p>The rooftop garden also featured controls that were fanned by large fans without any exhaust air, in case air movement from the vents was a contributing factor. The concentrations of CO<sub>2<\/sub> in the classrooms inside the building and in the garden were regularly measured to establish how much extra CO<sub>2<\/sub> was reaching the plants.<\/p>\n<p>&#8220;With the CO<sub>2<\/sub> measurements, high concentrations were found both inside classrooms and at rooftop exhaust vents when people were in the building,&#8221; Buckley said. &#8220;CO<sub>2<\/sub> levels averaged above 1000 parts per million\u2014the recommended limit\u2014in classrooms and above 800ppm\u2014high enough to increase growth in plants\u2014at the rooftop exhaust vents.&#8221;<\/p>\n<p><b>A quadruple helping of spinach<\/b><\/p>\n<p>Plants were monitored throughout growth for size, number of leaves, and then after harvesting for wet and dry biomass, with striking results: spinach grown next to the exhaust vents had four times the biomass of spinach grown next to a control fan. Even when high winds decreased the size advantage, the plants were still twice as large as the controls.<\/p>\n<p>&#8220;There are still many aspects of this system that must be determined before it can be implemented such as the optimal air application design and the possible extent of the enhanced growth effect,&#8221; cautioned Buckley. &#8220;Also, there is a decrease in growth with increased wind speed, so the optimal wind speed would need to be found and incorporated into the system design.&#8221;<\/p>\n<p>The plants&#8217; advantage doesn&#8217;t seem to be wholly due to the CO<sub>2<\/sub> &#8216;fertilization&#8217;\u2014the corn, which should have benefited less, also grew two to three times larger than the controls. However, the study still offers important possibilities for reusing CO<sub>2<\/sub> that would otherwise be considered waste to increase the yield of urban farms and shield them from harsh conditions.<\/p>\n<p>&#8220;We are hoping this could lead to the further development of this system and eventual implementation in rooftop gardens and farms,&#8221; Buckley said. &#8220;If that happens, then hopefully more rooftop farms will be installed. They could provide a multitude of environmental and <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/social-mediaa\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Social Media\" target=\"_blank\" rel=\"noopener\">social<\/a> benefits such as energy savings for the building, carbon drawdown, climate mitigation, urban heat reduction, local food production, community building opportunities, and aesthetic and mental health benefits.&#8221;\n                                                                                                                        <\/p>\n<hr\/>\n<div class=\"article-main__explore my-4 d-print-none\">\n<p>                                            How does this professor&#8217;s garden grow? On a Denver rooftop\n                                        <\/p><\/div>\n<hr class=\"mb-4\"\/>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Enhancing Growth in Rooftop Farms by Repurposing CO<sub>2<\/sub> from Human Respiration Inside Buildings, <i>Frontiers in Sustainable Food Systems<\/i> (2022). <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.3389\/fsufs.2022.918027\">DOI: 10.3389\/fsufs.2022.918027<\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                 <strong>Citation<\/strong>:<br \/>\n                                                 CO2 ventilation breakthrough could turn city rooftops into bumper vegetable gardens (2022, October 24)<br \/>\n                                                 retrieved 24 October 2022<br \/>\n                                                 from https:\/\/techxplore.com\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2022-10-co2-ventilation-breakthrough-city-rooftops.html<\/p>\n<p>                                            This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no<br \/>\n                                            part may be reproduced without the written permission. The content is provided for information purposes only.<\/p><\/div>\n<\/p><\/div>\n<p><script id=\"facebook-jssdk\" async=\"\" src=\"https:\/\/connect.facebook.net\/en_US\/sdk.js\"><\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. 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Rooftop farms and gardens that take advantage of underutilized roof space are a popular option, providing new food resources while&#8230;<\/p>\n","protected":false},"author":1,"featured_media":503340,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/rooftops.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-503339","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/503339","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=503339"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/503339\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/503340"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=503339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=503339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=503339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}