000171042 001__ 171042
000171042 005__ 20260505142649.0
000171042 0247_ $$2doi$$a10.1038/s41467-026-70623-9
000171042 0248_ $$2sideral$$a149174
000171042 037__ $$aART-2026-149174
000171042 041__ $$aeng
000171042 100__ $$aWang, Hui
000171042 245__ $$aPersistence and turnover of soil organic carbon in global drylands
000171042 260__ $$c2026
000171042 5060_ $$aAccess copy available to the general public$$fUnrestricted
000171042 5203_ $$aReliable predictions of dryland carbon fluxes require understanding the persistence and turnover of soil organic carbon (SOC). We measure radiocarbon to quantify the age of SOC and CO2 released from soil respiration at 97 dryland sites across six continents. Here we show that bulk SOC contains little C fixed in the past 60 years, while respired CO2 originates from both bomb-derived recent C and millennia-old C, challenging the idea that old C is chemically or physically protected. Radiocarbon suggests mean ages of ~2100 years for bulk SOC and ~520 years for respired CO2, the latter far older than machine-learning (<50 years) or Earth system models predict. Aridity, net primary productivity, and SOC content are dominant predictors for radiocarbon signatures, with abrupt shifts to older C beyond an aridity threshold of ~0.87. Our findings underscore the need to incorporate the vulnerability of older carbon into models and land management strategies.
000171042 536__ $$9info:eu-repo/grantAgreement/EC/H2020/647038/EU/Biological feedbacks and ecosystem resilience under global change: a new perspective on dryland desertification/BIODESERT$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 647038-BIODESERT
000171042 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000171042 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000171042 700__ $$aMaestre, Fernando T.
000171042 700__ $$aLu, Nan
000171042 700__ $$aZhao, Guang
000171042 700__ $$aZhang, Yangjian
000171042 700__ $$aAsensio, Sergio
000171042 700__ $$aBramble, De Shorn E.
000171042 700__ $$aChen, Weiliang
000171042 700__ $$aDippold, Michaela A.
000171042 700__ $$aEldridge, David J.
000171042 700__ $$aGaitán, Juan J.
000171042 700__ $$aGarcía-Gómez, Miguel
000171042 700__ $$aGozalo, Beatriz
000171042 700__ $$aGross, Nicolas
000171042 700__ $$aGuirado, Emilio
000171042 700__ $$aLe Bagousse-Pinguet, Yoann
000171042 700__ $$aMartínez-Valderrama, Jaime
000171042 700__ $$aMendoza, Betty J.
000171042 700__ $$aOchoa, Victoria
000171042 700__ $$aPlaza, César
000171042 700__ $$aSaiz, Hugo$$uUniversidad de Zaragoza
000171042 700__ $$aSchrumpf, Marion
000171042 700__ $$aSierra, Carlos A.
000171042 700__ $$aTangarife-Escobar, Andrés
000171042 700__ $$aValencia, Enrique
000171042 700__ $$avon Fromm, Sophie F.
000171042 700__ $$aWang, Cong
000171042 700__ $$aWang, Kai
000171042 700__ $$aWang, Yunqiang
000171042 700__ $$aZaehle, Sönke
000171042 700__ $$aFu, Bojie
000171042 700__ $$aTrumbore, Susan
000171042 700__ $$aHuang, Jianbei
000171042 7102_ $$15011$$2220$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Ecología
000171042 773__ $$g17, 1 (2026), [10 pp.]$$tNature communications$$x2041-1723
000171042 8564_ $$s3524380$$uhttps://zaguan.unizar.es/record/171042/files/texto_completo.pdf$$yVersión publicada
000171042 8564_ $$s2613254$$uhttps://zaguan.unizar.es/record/171042/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000171042 909CO $$ooai:zaguan.unizar.es:171042$$particulos$$pdriver
000171042 951__ $$a2026-05-05-13:36:22
000171042 980__ $$aARTICLE