European Journal of Soil Science最新文献

{"title":"Evaluating Sodium Pyrophosphate Extraction to Probe Soil Organo‐Mineral Interactions Across Contrasting Pedogenic Stages","authors":"Francisco Ruiz, Tiago Osório Ferreira, Giovanna Campanholi Delghingaro, Valdomiro Severino de Souza Júnior, José A. M. Demattê, Xosé Luis Otero","doi":"10.1111/ejss.70330","DOIUrl":"https://doi.org/10.1111/ejss.70330","url":null,"abstract":"Sodium pyrophosphate (NaPPi) is widely used in wet‐chemical extraction methods for assessing organo‐mineral interactions (OMIs) in soils. However, its effectiveness remains debated due to challenges in achieving specific solubilization and issues such as peptization and solubilization of organic carbon (OC) not directly associated with minerals. This study evaluated the effectiveness and specificity of Na‐PPi extractions at different pH levels (7 and 10) and concentrations (0.1 and 0.2 M) across eight soil types, minerals, and synthetic organo‐mineral complexes. Peptization was significantly reduced at pH 7 in relation to pH 10, especially with 0.2 M Na‐PPi, resulting in more reliable determination of OC involved in OMIs. The amount of OC extracted with 0.2 M Na‐PPi at pH 7 showed a positive correlation with mineral‐associated organic carbon in the studied soils ( <jats:italic>R</jats:italic> <jats:sub>adj</jats:sub> <jats:sup>2</jats:sup> = 0.52, <jats:italic>p</jats:italic> ‐value = 0.03), highlighting the significance of the OMIs targeted by NaPPi for OC accrual in soils. In general, Na‐PPi extractions targeted adsorption complexes with Al and Fe oxides, particularly affecting amorphous Al(OH) <jats:sub>3</jats:sub> and ferrihydrite. It also assessed Ca <jats:sup>2+</jats:sup> and Mg <jats:sup>2+</jats:sup> more tightly bound than the exchangeable fraction, suggesting disruption of cation‐bridging associations and organometallic complexes. The extractions also solubilized coprecipitation complexes with Al and Fe. However, some limitations still occurred with NaPPi at pH 7 as it mobilized small amounts of poorly crystalline Al and Fe phases (not bound to OC) and did not fully extract the mineral‐bound OC pool. Finally, by using soils from different parent materials and with varying degrees of weathering, we inferred the contribution of distinct OMIs across these soils. Base‐rich and less developed soils showed higher contributions of Ca <jats:sup>2+</jats:sup> and Mg <jats:sup>2+</jats:sup> . In moderately weathered soils, amorphous Al and poorly crystalline Fe were more significant, while acidic and highly weathered soils were more influenced by Al <jats:sup>3+</jats:sup> and crystalline Fe and Al oxides. Together, these findings demonstrate that the Na‐PPi extractions provide mechanistically meaningful information on organo‐mineral interactions across contrasting soils, provided their operational constraints and selectivity are explicitly recognized.","PeriodicalId":12043,"journal":{"name":"European Journal of Soil Science","volume":"65 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147695745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting Lignin and Microbial Necromass Sequestration and Crop Productivity With Strategic Tillage in No‐Till Systems","authors":"Lixiao Ma, Xiao Wang, Xiaolin Chen, Xiaoying Jin, Tusheng Ren, Zhangliu Du","doi":"10.1111/ejss.70328","DOIUrl":"https://doi.org/10.1111/ejss.70328","url":null,"abstract":"Can strategic tillage in no‐till help or hinder its benefits of soil organic carbon (SOC) biochemistry and associated functionality? To address this issue, we used three biomarkers—free lipids, lignin phenols, and amino sugars—to quantify SOC characteristics such as composition, lability, and origins, and assessed soil quality and crop yields based on an 8‐year field trial with conventional tillage (CT), no‐till (NT), and strategic tillage (ST) in Northeast China. In the entire 0–30 cm profile, ST raised SOC, lignin phenols, and microbial necromass carbon (MNC) stocks by 21%, 36%, and 24%, respectively, compared to CT, whereas the differences in plant‐derived biomolecules and overall SOC between ST and NT were minimal. Instead, NT exhibited stratified free lipids, showing higher microbial‐, plant‐derived, and total lipids by 28%, 25%, and 33%, respectively, than CT in topsoil. Both NT and ST increased lignin phenols by 36% and 109% in the 0–20 cm layer compared to CT, emphasizing the preserved plant‐derived compounds. ST again displayed higher levels of fungal and total MNC by 28%–43% and 23%–34%, respectively, than CT and NT in sublayers (&gt; 5 cm), indicating the buildup of distinct microbial‐derived compounds. Both ST and NT significantly outperformed CT in terms of soil quality index and corn yields, highlighting their long‐term effectiveness. Collectively, ST could be recommended as a promising option to alleviate the limitations of no‐till farming by accumulating plant and microbial molecules and improving soil quality in a Mollisol.","PeriodicalId":12043,"journal":{"name":"European Journal of Soil Science","volume":"18 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147695727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Element Stoichiometry Across Grassland Plant Tissues and Rhizospheres: Role of Plant Traits, Soil and Land‐Use Intensity","authors":"Veronika Irmscher, Ute Hamer, Alexander Tischer, Yves P. Klinger, Sascha Nowak, Falk‐Rudhard Schreiner, Nahid Rasouli Paeenroudposhti, Sophie Fedler, Daniel Frenz, Martha von Maltzahn, Johannes Seidel, Lena Shetekauri, Till Kleinebecker","doi":"10.1111/ejss.70321","DOIUrl":"https://doi.org/10.1111/ejss.70321","url":null,"abstract":"Long‐term land use management including fertilization, grazing, and mowing shapes grassland ecosystems. A gradient of nutrient availability and stoichiometry is created which affects above‐ and belowground ecosystem functioning. Understanding how plant traits, land‐use intensity (LUI), and abiotic soil properties jointly are related to nutrient contents and stoichiometric patterns in leaves, roots, and the rhizosphere is essential for a mechanistic understanding of ecosystem processes. We analyzed 12 common grassland species across 15 experimental plots in the Hainich‐Dün Biodiversity Exploratories, measuring multiple nutrient concentrations beyond carbon (C), nitrogen (N), phosphorus (P), and sulfur (S) in leaves, roots and rhizosphere soil (extractable fraction, microbial biomass), along with extracellular enzyme kinetics (C‐, N‐, P‐, and S‐cycle) in rhizosphere soil. Plant traits, including plant life strategies and fine root characteristics (specific root length, root average diameter, root tissue density), were strongly linked to nutrient contents and stoichiometry in leaves and roots but had minimal correlation with rhizosphere nutrient pools and enzyme kinetics. In contrast, LUI and abiotic soil properties, such as bulk soil C/N and C/S ratios as well as texture, predominantly shaped microbial biomass, extractable soil nutrients, and enzyme activity. In addition, soil pH and water content were important. Principle component analyses revealed distinct stoichiometric patterns among plant functional groups (forbs, grasses, legumes) in leaf and root tissues, whereas rhizosphere compartments were structured primarily by LUI and abiotic soil gradients. Enzyme kinetics (characterized by <jats:italic>V</jats:italic> <jats:sub>max</jats:sub> and <jats:italic>K</jats:italic> <jats:sub>m</jats:sub> of the Michaelis–Menten kinetic) responded more strongly to LUI and soil properties than to plant traits, indicating a decoupling between aboveground nutrient allocation and belowground microbial processes. Overall, our results demonstrate that plant traits determine plant tissue nutrient composition, while LUI and abiotic soil properties govern rhizosphere nutrient distribution and microbial activity, suggesting a mechanistic link between plant strategies, soil processes, and ecosystem functioning in grasslands.","PeriodicalId":12043,"journal":{"name":"European Journal of Soil Science","volume":"52 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147666605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Urbanization Intensification Enhances Soil Inorganic Carbon Accumulation but Divergently Impacts Its CO 2 Emissions","authors":"Yuye Shen, Wenshu Zhao, Xiangyu Min, Weidong Zhang, Shuping Qin, Wenjie Wang, Yongfu Li, Bing Yu, Scott X. Chang, Yanjiang Cai","doi":"10.1111/ejss.70331","DOIUrl":"https://doi.org/10.1111/ejss.70331","url":null,"abstract":"Soil inorganic carbon (SIC) accounts for roughly 38% of the total carbon (C) stock in global soils. As a key component of urban ecosystems, parks are the hotspots of C cycling that are tightly linked with climate change. Compared with natural ecosystems, SIC in urban parks is often strongly altered by land management and construction activities. However, the SIC and its role as a potential source of carbon dioxide (CO <jats:sub>2</jats:sub> ) has often been overlooked in studies of urban parks. Here, we investigated the impact of different urbanization intensities on the SIC concentration of urban parks by a space‐for‐time substitution approach and explored whether urbanization affects the contribution of SIC‐derived CO <jats:sub>2</jats:sub> emissions by using δ <jats:sup>13</jats:sup> C stable isotope in Hangzhou, China. Our results showed that increasing urbanization intensity significantly increased SIC concentration, mainly driven by elevated mean annual temperature, soil pH, clay and fine silt content, mineral‐associated organic C, total nitrogen, exchange calcium and magnesium. Among these factors, the concentration of exchange calcium accounted for 16.8% of the variation in SIC. The SIC was positively correlated with mineral‐associated organic C, suggesting concurrent increase in both SIC and stable organic C component with increasing urbanization intensity. In contrast, SIC‐derived CO <jats:sub>2</jats:sub> emissions declined significantly with increasing urbanization intensity. Overall, these findings indicate that urbanization can simultaneously enhance SIC storage while suppressing SIC‐derived CO <jats:sub>2</jats:sub> emissions in urban park soils. Our study highlights the importance of incorporating SIC dynamics when evaluating soil C budgets and developing effective C management strategies in urban ecosystems.","PeriodicalId":12043,"journal":{"name":"European Journal of Soil Science","volume":"10 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147666604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Subsoiling Tillage Promoted Organic Carbon Accumulation by Modifying Soil Structure and Bacterial Community Diversity","authors":"Qing‐Shan Yang, Wei‐Hua Cui, Zhi‐Ping Wang, Ya‐Nan Zhang, Peng Wu, Zhen‐Ping Yang, Zhi‐Qiang Gao, Jian‐Fu Xue","doi":"10.1111/ejss.70326","DOIUrl":"https://doi.org/10.1111/ejss.70326","url":null,"abstract":"Tillage measures in the summer fallow phase cause soil disturbance and affect the vertical distribution of crop straw, thereby influencing variations in soil microbial structure and soil organic carbon (SOC). However, the specific mechanisms through which soil bacterial communities mediate SOC sequestration remain unclear. Therefore, we investigated the effects of no tillage (FNT), subsoiling tillage (FST), and plowing practice (FPT) in the summer fallow phase on soil properties, SOC stocks, soil extracellular enzymes, and bacterial community structures and functions. This study also identified the dominant factors in SOC accumulation processes. The results indicated that compared with FNT and FPT, FST significantly increased the 0–50 cm soil layer of SOC stock (7.6%–12.3%) due to the increase in the 0–30 cm soil depths. As well, FST markedly increased the soil amylase, β‐xylosidase, lignin peroxidase, β‐glucosidase, and sucrase activities at the 30–40 cm soil depth. These outcomes primarily stem from improvements in soil properties (e.g., mean weight diameter and geometric mean diameter). FNT and FST dramatically enhanced the bacterial community alpha diversity across the 30–40 cm soil layer compared with FPT. Partial least squares path modeling quantified the effects on SOC accumulation; soil water content exerted a significant negative effect (path coefficient, <jats:italic>r</jats:italic> = −0.249), whereas the mean weight diameter of soil aggregates ( <jats:italic>r</jats:italic> = 0.354) and bacterial community alpha diversity ( <jats:italic>r</jats:italic> = 0.603) exerted significant positive effects. Collectively, these factors moderate soil extracellular activities and affect SOC accumulation. Hence, subsoiling tillage in the summer fallow phase significantly improved soil structure, altered bacterial community diversity, and promoted the secretion of soil extracellular enzymes, thereby improving the carbon sequestration capacity. These results expand our understanding of the mechanisms underlying microbe‐mediated carbon sequestration in dryland agriculture.","PeriodicalId":12043,"journal":{"name":"European Journal of Soil Science","volume":"22 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147666606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decadal Warming and Rainfall Change Reshape Soil Mesofauna Traits and Communities, Especially Mites and Collembolans","authors":"Xuefeng Hu, Yang Li, Xiuwen Zhang, Zhiwei Gao, Xianxian Zhang, Wenfang Gao, Ziye Wang, Meiqing Jia, Guogang Zhang, Guodong Han","doi":"10.1111/ejss.70320","DOIUrl":"https://doi.org/10.1111/ejss.70320","url":null,"abstract":"Understanding how soil mesofauna respond to altered precipitation and warming is essential for assessing dryland ecosystem vulnerability under climate change. We used two decade‐scale field experiments in a <jats:styled-content style=\"fixed-case\"> <jats:italic>Stipa breviflora</jats:italic> </jats:styled-content> desert steppe of Inner Mongolia: continuous infrared warming (+1.5°C since 2006) and precipitation manipulation (±30% since 2008). Rainfall addition increased mesofaunal abundance and genus richness in the surface layer (0–5 cm) and increased total community biomass when pooled across 0–15 cm, whereas rainfall reduction caused limited changes relative to the rainfall control. Warming reduced total biomass at the pooled 0–15 cm scale and lowered mean body weight without changing mean body length, while abundance remained unchanged across soil layers. Genus richness responded in a depth‐dependent manner under warming, decreasing in 0–5 cm but increasing in 10–15 cm. Order‐level analyses showed selective responses to rainfall addition (increased Prostigmata in surface soil and pooled 0–15 cm, and increased Oribatida in 5–10 cm), whereas warming effects were not significant at the order level. Co‐occurrence network analysis revealed pronounced structural contrasts among treatments: rainfall addition greatly expanded network size and connectivity, whereas warming reduced network size and connectivity and increased the proportion of negative links. Together, these results indicate that biomass‐ and trait‐based metrics, as well as network structure, can reveal climate‐driven changes in soil mesofauna even when abundance responses are weak, highlighting potential implications for belowground functioning in desert steppe ecosystems.","PeriodicalId":12043,"journal":{"name":"European Journal of Soil Science","volume":"115 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147648991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"More Consistent International Soil Contamination Standards Are Required in E urope, the U nited S tates and Beyond","authors":"N. L. J. Rintoul‐Hynes, C. G. Ferguson, J. Carey, A. Splodytel","doi":"10.1111/ejss.70303","DOIUrl":"https://doi.org/10.1111/ejss.70303","url":null,"abstract":"Soil contamination standards are widely assumed to provide consistent protection of human health and ecosystems, but there are substantial inconsistencies in terminology used and threshold concentrations set across national frameworks. These inconsistencies limit the accuracy, comparability and reliability of soil assessments and can lead to uneven risk evaluation. The paper identifies key methodological and regulatory sources of divergence and proposes a harmonised, function‐based framework that standardises terminology, differentiates for assessment endpoints, incorporates soil properties and background levels, aligns analytical methods with data use, and promotes end‐to‐end workflow standardisation and quality control. Implementing these measures would improve confidence in soil datasets, support more robust and comparable risk assessments, and enable more consistent and scientifically defensible soil policy.","PeriodicalId":12043,"journal":{"name":"European Journal of Soil Science","volume":"193 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147648990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predicting the Spatial Distribution of Trace Elements in Arctic Soils With Limited Legacy Data","authors":"Azamat Suleymanov, Timur Nizamutdinov, Evgeniya Morgun, Xiaowen Ji, Xiaodong Wu, Sizhong Yang, Evgeny Abakumov","doi":"10.1111/ejss.70309","DOIUrl":"https://doi.org/10.1111/ejss.70309","url":null,"abstract":"Soil sampling and mapping of trace elements are challenging in Arctic regions. However, understanding the spatial distribution of them is crucial for effective environmental management and conservation efforts. Validating such digital maps is also a key consideration, especially in data‐constrained conditions. In this study, we first evaluated the feasibility of digital soil mapping methods for spatial modeling of trace and heavy metals in the Russian Arctic with limited soil data. The random forest method was used to predict topsoil concentrations of As, Cd, Cr, Hg, and Ni, in combination with environmental covariates, including climate, relief, vegetation, geology, geographic position, anthropogenic impact, soil properties, and soil class maps. We used a clustered legacy dataset and tested map accuracy with spatial and nonspatial cross‐validation (CV) techniques. We also estimated the uncertainty of the predictions and the area of applicability (AOA). We found that spatial and nonspatial CV resulted in different model performances, where conventional CV methods showed better performance. The mountainous area was beyond the AOA of all predictive models. Soil and climate variables were key predictors in the RF models. Despite the challenges of modeling trace elements in this study with sparse data, future efforts should prioritize expanded sampling in underrepresented environments, especially with distinct soil‐forming factors, and multistage validation strategies tailored for clustered datasets. The presented mapping can be a starting point for regional and national initiatives to map trace elements and metals in northern regions.","PeriodicalId":12043,"journal":{"name":"European Journal of Soil Science","volume":"19 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147635693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Who Do You Strive To Be? Exploring Norms of Good Farming for Sustainable Soil Management in Four European Regions","authors":"Mariella Schreiber, Marion Hacek, Jenny Höckert, Christina Lundström, Mette Tiselius, Xiomara F. Quiñones‐Ruiz, Heidi Leonhardt","doi":"10.1111/ejss.70318","DOIUrl":"https://doi.org/10.1111/ejss.70318","url":null,"abstract":"A widespread use of climate‐smart soil management practices is needed to meet the challenges posed to farming by climate change. However, it is individual farmers who choose to use such practices or not. Their choices depend on many different factors such as social norms, policy incentives, economic factors, or environmental and local requirements. Understanding norms can thus provide valuable insights into farmers' (potential) use of climate smart soil management practices. In this study, the ‘good farmer’ concept serves to investigate the norms that farmers hold with respect to their profession. To do so, we use a qualitative research approach and analyse the content of semi‐structured interviews with farmers in four case study regions located in Austria, Switzerland, Spain and Sweden. Analysing the views of farmers from different climatic zones in Europe is, to the best of our knowledge, unique. We first identify and describe the characteristics and symbols that are used to define a ‘good farmer’ and then compare them across contexts. The most frequently mentioned characteristics and symbols across regions are open‐mindedness and a willingness to learn, attentiveness and adaptiveness to soil and weather conditions, and being able to time work well, but also having neat and tidy farms and fields. These results are relatively congruent across the case study regions. Economic aspects of farming—for example, being a good businessperson that acts in an economically strategic way—are mentioned in all regions but emphasised especially in the Spanish case study region. We conclude that farmers hold several norms that likely benefit the use of climate‐smart soil management practices, such as openness to change, attentiveness and long‐term orientation. Other norms are either ambivalent (e.g., norms related to farm economics and business management) or might present barriers (e.g., the importance given to tidy fields) for their uptake. Therefore, we recommend policy incentives which address these norms, such as open mindedness and adaptiveness, rather than focusing primarily on economic incentives. We draw policy recommendations such as revising policy measures to incorporate such norms. For example, we advocate for the establishment and continuation of farmers' networks to foster peer‐to‐peer learning within communities.","PeriodicalId":12043,"journal":{"name":"European Journal of Soil Science","volume":"15 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147630892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil Preservation in Warming Climate: Organic Amendments Enhance Microbial Carbon Use Efficiency in Mediterranean Soils","authors":"Sana Boubehziz, Emily C. Cooledge, David R. Chadwick, Vidal Barrón, Antonio Rafael Sánchez‐Rodríguez, Davey L. Jones","doi":"10.1111/ejss.70323","DOIUrl":"https://doi.org/10.1111/ejss.70323","url":null,"abstract":"Mediterranean agroecosystems are vulnerable to extreme heat‐stress, especially because of their low organic matter content. Organic amendments may enhance soil nutrient content and microbial resilience to heatwaves, whose frequency is increasing in Mediterranean regions. However, their effectiveness under these conditions is still unclear. We investigated the effect of composted organic amendments (olive mill pomace, biosolids and solid urban residue) and a mineral fertiliser (diammonium phosphate) on microbial carbon use efficiency (CUE) and soil biogeochemistry in two different soils, a calcareous Vertisol and a non‐calcareous Inceptisol, with low P availability, subjected to extreme heat‐stress. We conducted incubation experiments (20°C, 30°C, 40°C or 50°C) to monitor <jats:sup>14</jats:sup> C‐glucose mineralisation and to evaluate modifications in soil biochemical properties. As a result of warming, soil microorganisms exhibited thermotolerance up to 40°C, with a critical shift in microbial respiration observed at 50°C. Consequently, microbial CUE, which was a function of the organic amendments and soil type, significantly declined from 0.47–0.65 at 20°C to 0.27–0.45 at 50°C ( <jats:italic>p</jats:italic> &lt; 0.05), with the unamended control decreasing by 0.010 ± 0.001°C <jats:sup>−1</jats:sup> (Vertisol) and 0.007 ± 0.001°C <jats:sup>−1</jats:sup> (Inceptisol). Moreover, composted olive mill pomace enhanced the resistance of soils to heat stress as they produced the highest microbial CUE at 40°C in the Inceptisol and 50°C in both soils (0.43 ± 0.02 Inceptisol vs. 0.45 ± 0.02 Vertisol). Soil biogeochemistry varied with temperature and treatment, whilst available P in soils treated with diammonium phosphate was reduced with temperature in both soils, but it was increased with biosolids for all temperatures in the Inceptisol. In conclusion, organic matter‐rich organic amendments (composted olive mill pomace) may enhance the resistance of Mediterranean agricultural soils subjected to extreme heat‐stress events (50°C).","PeriodicalId":12043,"journal":{"name":"European Journal of Soil Science","volume":"11 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147630893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}