[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-443918-105":59,"doc-detail-443918-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","frequent-droughts-reduce-carbon-stabilisation-in-organo-mineral-soils","Frequent Droughts Reduce Carbon Stabilisation in Organo-Mineral Soils","","Climate change is increasing drought frequency, destabilizing soil carbon sinks. Although droughts are known to accelerate soil organic matter decomposition and raise CO2 emissions, the long-term effects of repeated drought on soil processes remain unclear. The study modelled recurrent drought events in a temperate heathland on organomineral soil using ECOSSE and new metrics for SOC sequestration and stabilisation.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/frequent-droughts-reduce-carbon-stabilisation-in-organo-mineral-soils/443918/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/frequent-droughts-reduce-carbon-stabilisation-in-organo-mineral-soils/443918.png","ImageObject",300,407,{"name":92,"@type":93},"Taylor Morgan","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-03","2026-09-29",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"How does drought frequency affect long-term soil carbon stability in this study?","Question",{"text":112,"@type":113},"Recurrent droughts reduce soil carbon sequestration and modify the balance between decomposition and stabilisation, with drought frequency identified as the dominant control on long-term soil carbon stability.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What modelling approach and metrics were used to assess drought impacts on soil carbon?",{"text":117,"@type":113},"The study used the ECOSSE biogeochemical model to simulate long-term drought events and developed metrics to evaluate changes in soil organic carbon sequestration and stabilisation.",{"name":119,"@type":110,"acceptedAnswer":120},"What changes occurred in microbial and humified SOC pools under drought scenarios?",{"text":121,"@type":113},"Across scenarios, drought events decreased microbial (BIO) and humified (HUM) SOC pools, with reductions up to 15% for BIO and 8% for HUM.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},443918,1790790673,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},1099523885336,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Global Change Biology  \nRESEARCH ARTICLE  OPEN ACCESS   \nFrequent Droughts Reduce Carbon Stabilisation in Organo-Mineral Soils  \nFabrizio Albanito1 | Sabine Reinsch1  | Mark Richards2 | Amanda M. Thomson1 | Bernard J. Cosby1 | Bridget A. Emmett1 | David A. Robinson1   \n1UK Centre for Ecology & Hydrology, Bangor, UK | 2Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, UK Correspondence: Fabrizio Albanito ([fabalb@ceh.ac.uk](fabalb@ceh.ac.uk))  \nReceived: 3 June 2025 | Revised: 28 October 2025 | Accepted: 29 October 2025  \nKeywords: biogeochemical model | carbon sequestration | carbon use efficiency | drought | heathland | organo-mineral soil | soil carbon | soil moisture  \nABSTRACT  \nClimate change is increasing drought frequency, threatening the stability of soil carbon sinks. While droughts are known to accelerate soil organic matter decomposition and enhance CO2 emissions, the long-term effects of recurrent droughts on soil remain unclear. We addressed this pressing issue by modelling long-term drought events in a temperate heathland on organomineral soil using the ECOSSE biogeochemical model and developing new metrics to assess changes in soil organic carbon (SOC) sequestration and stabilisation. Across all scenarios, drought events decreased the size of microbial (BIO) and humified (HUM) SOC pools by up to 15% and 8% respectively. Short-interval droughts weakened the BIO-to-HUM transfer, leading to incomplete recovery after rewetting, whereas prolonged droughts increased decomposition of stable pools at depth but allowed only partial re-equilibration during recovery. These changes were mirrored by contrasting responses in the carbon use efficiencies of labile (CUEI) and stable (CUES) pools. During frequent droughts, CUEI remained relatively stable, while the contribution of CUES increased indicating a higher contribution of stable SOC pools under soil moisture stress. The carbon sequestration efficiency (CSE = CUEI/CUES) declined by up to 15% under prolonged droughts compared with more frequent drought-rewetting cycles, signalling a progressive reduction in soil carbon sequestration. The stabilisation efficiency (SE = ΔHUM/ΔBIO) declined to about 40%, implying that recurrent droughts reduced the efficiency with which microbial carbon was stabilized into the HUM pool. Collectively, these metrics revealed a reversal in the CSE-water relationship: CSE increased with soil water during drought but declined after rewetting, indicating a persistent post-drought decoupling between decomposition and stabilisation processes. Recurrent droughts thus reshape SOC dynamics reducing CSE and altering the balance between decomposition and stabilisation with depth. Drought frequency rather than duration, emerges as the dominant control on long-term soil carbon stability in organo-mineral systems.  \n1 | Introduction  \nThe severity and frequency of anthropogenic drought events (Aghakouchak et al. 2021) have been increasingly linked to widespread and disruptive effects on ecosystem carbon (C) and nitrogen (N) cycling (Knapp et al. 2024; Müller and Bahn 2022) . Droughts can accelerate the oxidation of soil organic carbon (SOC), increasing soil CO2 emissions to the atmosphere (Dong  \net al. 2021; Liu et al. 2022; Reinsch et al. 2017) . The response of soil organic matter (SOM) to soil moisture changes is determined by mechanisms regulating its turnover at different spatial and temporal scales (Schrumpfet al. 2013). Recently, Vahedifardet al. (2024) characterized the feedback loop between climatic drought, soil desiccation, and the consequential increase in soil CO2 emissions. Following an initial minor increase in soil CO2 respiration, structural changes in the soil caused by severe  \nThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.  \n© 2026 The Author(s). Glo","cbCaiagdMVpimm0N","https://ap.wps.com/l/cbCaiagdMVpimm0N","pdf",2663014,15,"English","# Abstract\n# Introduction","[{\"question\":\"How does drought frequency affect long-term soil carbon stability in this study?\",\"answer\":\"Recurrent droughts reduce soil carbon sequestration and modify the balance between decomposition and stabilisation, with drought frequency identified as the dominant control on long-term soil carbon stability.\"},{\"question\":\"What modelling approach and metrics were used to assess drought impacts on soil carbon?\",\"answer\":\"The study used the ECOSSE biogeochemical model to simulate long-term drought events and developed metrics to evaluate changes in soil organic carbon sequestration and stabilisation.\"},{\"question\":\"What changes occurred in microbial and humified SOC pools under drought scenarios?\",\"answer\":\"Across scenarios, drought events decreased microbial (BIO) and humified (HUM) SOC pools, with reductions up to 15% for BIO and 8% for HUM.\"}]","Frequent Droughts Reduce Carbon Stabilisation in Organo-Mineral Soils | PDF",1790706066,38]