{"id":621534,"date":"2026-05-03T19:08:22","date_gmt":"2026-05-03T19:08:22","guid":{"rendered":"https:\/\/www.newsbeep.com\/us\/621534\/"},"modified":"2026-05-03T19:08:22","modified_gmt":"2026-05-03T19:08:22","slug":"after-37-years-the-worlds-longest-running-soil-warming-experiment-uncovers-a-startling-climate-secret","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us\/621534\/","title":{"rendered":"After 37 Years, the World\u2019s Longest-Running Soil Warming Experiment Uncovers a Startling Climate Secret"},"content":{"rendered":"

\"Hand<\/a>Warming soils may be unlocking carbon once considered permanent, releasing additional CO2 into the atmosphere. This subtle but significant shift could amplify climate change in ways scientists are only beginning to understand. Credit: Shutterstock<\/p>\n

A decades-long experiment in a Massachusetts forest is uncovering unexpected behavior in soil carbon.<\/p>\n

After nearly 40 years, the longest-running soil warming experiment in the world is producing an unexpected finding. What was once considered long-term, \u201cstable\u201d carbon in forest soils is proving far less permanent. As temperatures rise, even these stubborn carbon reserves can break down and release CO2 into the air.<\/p>\n

\u201cMicrobes are critical components of soil ecosystems because they break down organic matter and recycle elements essential for plant growth,\u201d explains Jerry Melillo, a Distinguished Scientist at the Marine Biological Laboratory, who has moved the needle on the world\u2019s understanding of climate change over the course of his career. \u201cAs warming reshapes these microbial communities, it can speed the loss of carbon from soils.\u201d<\/p>\n

\"Heated<\/a>One of the heated plots in the Harvard Forest. Credit: Jerry MelilloA Long-Term Experiment in Harvard Forest<\/p>\n

Deep in Harvard Forest in central Massachusetts, researchers have been running a controlled warming experiment for 37 years. Electric cables buried underground keep sections of soil at a steady 5 \u00b0C (9 \u00b0F) above natural conditions through every season, from frozen winters to humid summers.<\/p>\n

When the study began in the late 1980s, that temperature increase reflected the upper range of climate projections at the time. Today, it no longer seems extreme. Global temperatures have already climbed by about 1.1 to 1.4 \u00b0C since the Industrial Revolution, and future warming will depend heavily on how quickly greenhouse gas emissions are reduced.<\/p>\n

\u201cIf we dramatically cut CO2 emissions from fossil fuel burning, or reduce deforestation, the projected increase would be lower,\u201d Melillo says.<\/p>\n

\"Heated<\/a>Heated plots in the Harvard Forest are starkly visible from a fire tower at the end of winter. Credit: Harvard ForestA Hidden Shift Underground<\/p>\n

Soil holds more carbon globally than the atmosphere and all plant life combined, making it a critical piece of the climate system. Scientists have long assumed that a portion of this carbon is effectively locked away for centuries. The new findings challenge that assumption.<\/p>\n

After decades of warming, researchers observed that these supposedly resistant forms of soil organic matter are beginning to decompose. This shift did not appear immediately. Instead, it emerged slowly, underscoring the importance of long-term experiments that capture changes unfolding over decades rather than years.<\/p>\n

A Feedback Loop With Global Stakes<\/p>\n

As these materials decompose, they release additional CO2 into the atmosphere.<\/p>\n

This process could strengthen a feedback loop in Earth\u2019s climate system: rising temperatures lead to more carbon release from soils, which in turn drives further warming. Including these results in climate models may improve predictions of future climate change.<\/p>\n

Reference: \u201cThree decades of continuous warming in temperate forests destabilizes persistent forms of soil organic matter\u201d by Atz\u00edn X. San Rom\u00e1n, Serita D. Frey, Melissa A. Knorr, Huan Tong, Jerry M. Melillo and Myrna J. Simpson, 7 April 2026, Science of The Total Environment.
DOI: 10.1016\/j.scitotenv.2026.181777<\/a><\/p>\n

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Follow us on Google<\/a> and Google News<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"Warming soils may be unlocking carbon once considered permanent, releasing additional CO2 into the atmosphere. This subtle but…\n","protected":false},"author":2,"featured_media":621535,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[4253,2351,192,269396,79,69534],"class_list":["post-621534","post","type-post","status-publish","format-standard","has-post-thumbnail","category-science","tag-climate-change","tag-ecology","tag-environment","tag-marine-biological-laboratory","tag-science","tag-soil"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/621534","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/comments?post=621534"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/621534\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media\/621535"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media?parent=621534"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/categories?post=621534"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/tags?post=621534"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}