{"id":67929,"date":"2024-05-08T11:51:17","date_gmt":"2024-05-08T16:51:17","guid":{"rendered":"https:\/\/olduvai.ca\/?p=67929"},"modified":"2024-05-08T11:51:17","modified_gmt":"2024-05-08T16:51:17","slug":"abrupt-permafrost-thaw-found-to-intensify-warming-effects-on-soil-co%e2%82%82-emission","status":"publish","type":"post","link":"https:\/\/olduvai.ca\/?p=67929","title":{"rendered":"Abrupt permafrost thaw found to intensify warming effects on soil CO\u2082 emission"},"content":{"rendered":"

Abrupt permafrost thaw found to intensify warming effects on soil CO\u2082 emission<\/a><\/h3>\n
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Thermokarst landscape on the Tibetan Plateau. Credit: Wang Guanqin<\/figcaption><\/figure>\n<\/div>\n<\/div>\n

According to a recent study published in\u00a0Nature Geoscience<\/i>, scientists have found that soil carbon dioxide (CO2<\/sub>) emissions are more sensitive to climate warming in permafrost-collapsed areas than in non-collapsed areas.<\/p>\n

This study, based on field warming experiments combined with laboratory incubation of soils from a large-scale sampling, provides new insights about\u00a0permafrost<\/a>\u00a0carbon\u2013climate feedback in the context of future climate warming.<\/p>\n

Warmer temperatures have led to rapid permafrost thawing in high-latitude and high-altitude permafrost regions. Abrupt permafrost thaw, known as thermokarst, occurs in approximately 20% of the northern permafrost region, but this region stores about half of all below-ground organic carbon. This type of thawing can restructure land surface morphology, causing abrupt changes to the soil biotic and abiotic properties, which may significantly alter ecosystem carbon cycling.<\/p>\n

Since both thermokarst and non-thermokarst areas are simultaneously experiencing ongoing warming, an important but so far overlooked consideration is whether the warming effects on soil CO2<\/sub>\u00a0flux might differ between these two distinct landforms.<\/p>\n

To fill this\u00a0knowledge gap<\/a>, a collaborative research group led by Prof. Yang Yuanhe from the Institute of Botany of the Chinese Academy of Sciences has investigated how thermokarst formation influences the responses of soil CO2<\/sub>\u00a0fluxes to climate warming, using multiple approaches.<\/p>\n

In a well-replicated warming experiment conducted simultaneously in thermokarst and non-thermokarst areas, the researchers found that the warming-induced increase in soil CO2<\/sub>\u00a0release was about 5.5 times higher in thermokarst features than in adjacent non-thermokarst landforms.<\/p>\n

They then analyzed over 30 potential drivers of the warming effects on CO2<\/sub>\u00a0release using soil physicochemical analyses, solid-state\u00a013<\/sup>C\u00a0nuclear magnetic resonance<\/a>, and metagenomic sequencing…<\/p>\n

…click on the above link to read the rest of the article…<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Abrupt permafrost thaw found to intensify warming effects on soil CO\u2082 emission Thermokarst landscape on the Tibetan Plateau. Credit: Wang Guanqin According to a recent study published in\u00a0Nature Geoscience, scientists have found that soil carbon dioxide (CO2) emissions are more sensitive to climate warming in permafrost-collapsed areas than in non-collapsed areas. This study, based on […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[4],"tags":[34494,141,146,369,23837,34495,30480],"class_list":["post-67929","post","type-post","status-publish","format-standard","hentry","category-environment","tag-chinese-academy-of-sciences","tag-climate-change","tag-co2-emissions","tag-global-warming","tag-permafrost","tag-permafrost-thaw","tag-phys-org"],"_links":{"self":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts\/67929","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=67929"}],"version-history":[{"count":1,"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts\/67929\/revisions"}],"predecessor-version":[{"id":67930,"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts\/67929\/revisions\/67930"}],"wp:attachment":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=67929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=67929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=67929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}