{"id":342959,"date":"2021-12-24T12:00:00","date_gmt":"2021-12-24T11:00:00","guid":{"rendered":"https:\/\/innovationorigins.com\/?post_type=selected&p=342959"},"modified":"2021-12-24T12:00:00","modified_gmt":"2021-12-24T11:00:00","slug":"prescribed-burning-could-offset-carbon-emissions","status":"publish","type":"selected","link":"https:\/\/ioplus.nl\/archive\/en\/selected\/prescribed-burning-could-offset-carbon-emissions\/","title":{"rendered":"Prescribed burning could offset carbon emissions"},"content":{"rendered":"\n

Planting trees and suppressing wildfires do not necessarily maximise the carbon storage of natural ecosystems. A new study has found that prescribed burning can actually lock in or increase carbon in the soils of temperate forests, savannahs and grasslands, writes the University of Cambridge in a press release<\/a>. <\/p>\n\n\n\n

The finding points to a new method of manipulating the world\u2019s natural capacity for carbon capture and storage, which can also help to maintain natural ecosystem processes. The results are published today in the journal Nature Geoscience<\/em><\/a>.<\/p>\n\n\n\n

\u201cUsing controlled burns in forests to mitigate future wildfire severity is a relatively well-known process. But we\u2019ve found that in ecosystems including temperate forests, savannahs and grasslands, fire can stabilise or even increase soil carbon,\u201d said Dr Adam Pellegrini in the University of Cambridge\u2019s Department of Plant Sciences, first author of the report.<\/p>\n\n\n\n

He added: \u201cMost of the fires in natural ecosystems around the globe are controlled burns, so we should see this as an opportunity. Humans are manipulating a process, so we may as well figure out how to manipulate it to maximise carbon storage in the soil.\u201d\u00a0<\/p>\n\n\n\n

Fire can be good<\/h3>\n\n\n\n

Fire burns plant matter and organic layers within the soil, and in severe wildfires this leads to erosion and leaching of carbon. It can take years or even decades for lost soil carbon to re-accumulate. But the researchers say that fires can also cause other transformations within soils that can offset these immediate carbon losses, and may stabilise ecosystem carbon.<\/p>\n\n\n\n

Fire stabilises carbon within the soil in several ways. It creates charcoal, which is very resistant to decomposition, and forms \u2018aggregates\u2019 \u2013 physical clumps of soil that can protect carbon-rich organic matter at the centre. Fire can also increase the amount of carbon bound tightly to minerals in the soil.<\/p>\n\n\n\n

\u201cEcosystems can store huge amounts of carbon when the frequency and intensity of fires is just right. It\u2019s all about the balance of carbon going into soils from dead plant biomass, and carbon going out of soils from decomposition, erosion, and leaching,\u201d said Pellegrini. <\/p>\n\n\n\n

When fires are too frequent or intense – as is often the case in densely planted forests – they burn all the dead plant material that would otherwise decompose and release carbon into the soil. High-intensity fires can also destabilise the soil, breaking off carbon-based organic matter from minerals and killing soil bacteria and fungi. <\/p>\n\n\n\n

Without fire, soil carbon is recycled – organic matter from plants is consumed by microbes and released as carbon dioxide or methane. But infrequent, cooler fires can increase the retention of soil carbon through the formation of charcoal and soil aggregates that protect from decomposition.<\/p>\n\n\n\n

Increasing the amount of carbon in the soil<\/h3>\n\n\n\n

The scientists say that ecosystems can also be managed to increase the amount of carbon stored in their soils. Much of the carbon in grasslands is stored below-ground, in the roots of the plants. Controlled burning, which helps encourage grass growth, can increase root biomass and therefore increase the amount of carbon stored.<\/p>\n\n\n\n

\u201cIn considering how ecosystems should be managed to capture and store carbon from the atmosphere, fire is often seen as a bad thing. We hope this new study will show that when managed properly, fire can also be good – both for maintaining biodiversity and for carbon storage,\u201d said Pellegrini. <\/p>\n\n\n\n

The study focused on carbon stored in topsoils, defined as those less than 30cm deep. More carbon is stored in the world\u2019s soil than in the global vegetation and the atmosphere combined. Natural fires occur in most ecosystems worldwide, making fire an important process in global carbon cycling.\u00a0<\/p>\n\n\n\n

Also interesting: <\/strong><\/em>Sensors can help to catch forest fires in time<\/a><\/p>\n","protected":false},"author":2084,"featured_media":342960,"template":"","meta":{"_acf_changed":false,"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":""},"categories":[42],"tags":[33854,43231,23682,57366,31727,124947,46284],"location":[55977],"internal_archives":[],"class_list":["post-342959","selected","type-selected","status-publish","has-post-thumbnail","hentry","category-sustainability-nl","tag-carbon-dioxide","tag-carbon-emissions","tag-co2-en","tag-fire","tag-forest","tag-forest-fires","tag-university-of-cambridge","location-united-kingdom"],"blocksy_meta":[],"acf":[],"featured_img":"https:\/\/ioplus.nl\/archive\/wp-content\/uploads\/2022\/04\/ZRn5R7tX-wildfire-g5df1e43d3_1920-1.jpg","coauthors":[],"author_meta":{"author_link":"https:\/\/ioplus.nl\/archive\/author\/mauro-mereu\/","display_name":"Mauro Mereu"},"relative_dates":{"created":"Posted 4 years ago","modified":"Updated 4 years ago"},"absolute_dates":{"created":"Posted on December 24, 2021","modified":"Updated on December 24, 2021"},"absolute_dates_time":{"created":"Posted on December 24, 2021 12:00 pm","modified":"Updated on December 24, 2021 12:00 pm"},"featured_img_caption":"\u00a9 Pixabay","tax_additional":{"category":{"linked":["Sustainability<\/a>"],"unlinked":["Sustainability<\/span>"],"slug":"category","name":"Categories"},"post_tag":{"linked":["carbon dioxide<\/a>","carbon emissions<\/a>","co2<\/a>","fire<\/a>","forest<\/a>","forest fires<\/a>","University of Cambridge<\/a>"],"unlinked":["carbon dioxide<\/span>","carbon emissions<\/span>","co2<\/span>","fire<\/span>","forest<\/span>","forest fires<\/span>","University of Cambridge<\/span>"],"slug":"post_tag","name":"Tags"},"language":{"linked":["EN<\/a>"],"unlinked":["EN<\/span>"],"slug":"language","name":"Tags"},"post_translations":{"linked":[],"unlinked":[],"slug":"post_translations","name":""},"location":{"linked":["United Kingdom<\/a>"],"unlinked":["United Kingdom<\/span>"],"slug":"location","name":"Locations"},"internal_archives":{"linked":[],"unlinked":[],"slug":"internal_archives","name":"Internal Archives"}},"series_order":"","_links":{"self":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/selected\/342959","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/selected"}],"about":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/types\/selected"}],"author":[{"embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/users\/2084"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/media\/342960"}],"wp:attachment":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/media?parent=342959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/categories?post=342959"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/tags?post=342959"},{"taxonomy":"location","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/location?post=342959"},{"taxonomy":"internal_archives","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/internal_archives?post=342959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}