Catena最新文献

{"title":"Incorporating biological soil crusts into the B factor to enhance the accuracy of soil erosion models in drylands","authors":"Kangmin Gu ,&nbsp;Jingyi Ji ,&nbsp;Baoyuan Liu ,&nbsp;Wanyun Huang ,&nbsp;Kai Yang ,&nbsp;Hui Sun ,&nbsp;Jingrong Song ,&nbsp;Liqian Gao ,&nbsp;Yunge Zhao","doi":"10.1016/j.catena.2025.109140","DOIUrl":"10.1016/j.catena.2025.109140","url":null,"abstract":"<div><div>Accurately predicting soil loss is crucial for the ecological environment protection in drylands. Biological soil crusts (biocrusts), which are widespread surface coverings in dryland ecosystems, significantly reduce soil loss from slopes. However, the existing soil erosion models often inadequately account for the effects of biocrusts, which may lead to overestimation of soil loss in areas covered by biocrusts. Accordingly, we conducted 18 simulated rainfall experiments with a rainfall intensity of 90 mm·h⁻¹, using 10 m × 2.1 m plots with biocrusts of different coverage on a 25° slope to explore the relationship between the soil loss ratio (<em>SLR</em>) and biocrust coverage. Subsequently, we incorporated the biocrust factor (<em>B_BSC</em>) into the biological-control (<em>B</em>) factor of the Chinese Soil Loss Equation (CSLE). Meanwhile, we used the soil loss data from six-year natural rainfall to investigate the relationship between soil loss and biocrust coverage under natural rainfall conditions and verified the revised CSLE. The results showed that soil loss decreased with the increase in biocrust coverage under natural rainfall conditions, and the degree of decrement was related to the rainfall amount. There was a significant negative exponential function relationship between the <em>SLR</em> and biocrust coverage. Based on this, the <em>B_BSC</em> was developed as a sub-factor of the <em>B</em> factor, with the formula <em>B_BSC</em> = 0.8417e^-0.0688<em>^BC</em>, <em>BC</em> was biocrust coverage (%) (<em>R</em>² = 0.880, <em>P</em> &lt; 0.01). Compared with the original CSLE, the prediction accuracy of the revised model was significantly enhanced. This study verified the importance and practicality of revising the erosion model so as to consider the effects of biocrusts on soil loss at plot-scale and provided valuable reference for the revision of erosion models in drylands covered by biocrusts, such as the Loess Plateau in China.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"257 ","pages":"Article 109140"},"PeriodicalIF":5.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-proxy documentation of past storm events in a mid-latitude coastal environment","authors":"Pierre Pouzet ,&nbsp;Armelle Decaulne ,&nbsp;Beatriz M. Funatsu","doi":"10.1016/j.catena.2025.109118","DOIUrl":"10.1016/j.catena.2025.109118","url":null,"abstract":"<div><div>As extreme events are expected to become more frequent, the combination of different environmental approaches is essential to apprehend the evolution of their occurrences. This requires a substantial time depth with a robust record of such events. This work presents a combined approach crossing historical, dendrochronological and meteorological indicators to document storm occurrences from a primary maritime pine (<em>Pinus pinaster)</em> tree-ring dataset extracted at Pointe d’Arcay coastal environment (western France), covering the period 1964 to 2019. From the analyses of tree-ring patterns, we identified fourteen years during which the growth of trees was strongly disturbed by significant storm winds, including those associated with Lothar and Martin (1999), Xynthia (2010), Joachim (2012), Klaus and Quinten (2009) storm systems. The analysis of wind parameters (intensity, direction, and persistence) based on ERA5 reanalysis showed a ∼85 % fit between historical archives, dendrochronology, and meteorological data. As trees were sampled through the main tilting axis, tree rings revealed the impacts of windstorms originating from only one direction. The wind intensity appears to be an important factor to produce tree-ring eccentric growth; however, it does not explain all eccentric growth cases. Thus, we analyzed wind persistence as a potential parameter influencing dendrochronological signals recorded during years without storms. We demonstrate that dendrochronology, with the support of meteorological, historical and reanalysis wind data, accurately documents storm winds in a mid-latitude coastal environment. Tree-ring archives are effective to estimate windy phases of extratropical storms and can be used to understand past storm activity with trees older than the available meteorological records.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"257 ","pages":"Article 109118"},"PeriodicalIF":5.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental field study on the influence of underground plant roots on the initiation of gulley debris flows","authors":"Yongbin Wang ,&nbsp;Dongxia Yue ,&nbsp;Yu Xie ,&nbsp;Yaohang Sun ,&nbsp;Guowei Li ,&nbsp;Yan Zhao ,&nbsp;Fuyun Guo ,&nbsp;Xingmin Meng","doi":"10.1016/j.catena.2025.109128","DOIUrl":"10.1016/j.catena.2025.109128","url":null,"abstract":"<div><div>Debris flows are a type of natural disaster induced by vegetation–water–soil coupling under external dynamic conditions. Research on the mechanism by which underground plant roots affect the initiation of gulley debris flows is currently limited. To explore this mechanism, we designed 14 groups of controlled field-based simulation experiments. Through monitoring, analysis, calculation, and simulation of the changes in physical parameters, such as volumetric water content, pore-water pressure, and matric suction, during the debris flow initiation process, we revealed that underground plant roots change the pore structure of soil masses. This affects the response time of pore-water pressure to volumetric water content, as well as hydrological processes within soil masses before the initiation of gully debris flows. Underground plant roots increase the peak volumetric water content of rock and soil masses, reduce the rates of increase of volumetric water content and pore-water pressure, and increase the dissipation rate of pore-water pressure. Our results clarify the influence of underground roots on the initiation of gulley debris flows, and also provide support for the initiation warning of gully debris flow. When the peak value of stable volumetric water content is taken as the early warning value, the early warning time of soil with underground plant roots is delayed by 534 to 1253 s. When the stable peak value of pore-water pressure is taken as the early warning value, the early warning time of soil with underground plant roots is delayed by 193 to 1082 s. This study provides a basis for disaster prevention and early warning of gully debris flows in GLP, and also provides ideas and theoretical basis under different vegetation-cover conditions area similar to GLP.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"257 ","pages":"Article 109128"},"PeriodicalIF":5.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydraulic characteristics and geomorphic effects of the 2018 Baige landslide lake outburst flood: A reach-scale study of the mainstem over hundreds of kilometers","authors":"Jie-Yuan Zhang ,&nbsp;Xing-Guo Yang ,&nbsp;Gang Fan ,&nbsp;Hai-Bo Li ,&nbsp;Yu-Xiang Hu ,&nbsp;Jia-Wen Zhou","doi":"10.1016/j.catena.2025.109136","DOIUrl":"10.1016/j.catena.2025.109136","url":null,"abstract":"<div><div>Landslide lake outburst floods play a vital role in shaping mountainous landscapes, yet their downstream geomorphic impacts remain underexplored. This study investigates the 2018 Baige LLOF along the upper Jinsha River using hydrological records, remote sensing data, and two-dimensional numerical modeling. While earlier studies focused on the upper 100 km, our results reveal distinct patterns of channel change and sediment redistribution between 100–310 km. A hydraulic threshold—average peak shear stress of 0.5–0.6 kPa and flood power of 4–5 kW/m²—divides erosion- and deposition-dominated reaches. Energy dissipation downstream promotes sediment deposition in broader valleys, contrasting with intense erosion in confined upstream gorges. We also identify a scaling relationship between flood power and unit stream power, contributing new insights into flood-driven landscape evolution. Sediment records and annual changes in water surface width highlight delayed sediment transport and gradual channel recovery, underscoring the prolonged geomorphic effects of such events. These findings enhance the understanding of large flood impacts over extended fluvial reaches and support hazard assessment and hydropower development in the eastern Tibetan Plateau.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"257 ","pages":"Article 109136"},"PeriodicalIF":5.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Millet stable isotopes reveal the advance of agricultural practices in the core political regions of early imperial China","authors":"Jingwen Liao ,&nbsp;Edward Allen ,&nbsp;Amanda G. Henry ,&nbsp;Jason E. Laffoon ,&nbsp;Ming Li ,&nbsp;Daiyun Liu ,&nbsp;Pengfei Sheng","doi":"10.1016/j.catena.2025.109148","DOIUrl":"10.1016/j.catena.2025.109148","url":null,"abstract":"<div><div>Recent archaeological research has revealed a significant intensification of agricultural practices in prehistoric China. Traditional historical perspectives suggest that the Han Dynasty also saw notable advancements in agriculture, though supporting evidence from archaeological science, along with comparative studies of farmland management practices between these two critical periods, remains limited. Here, we analyzed carbon and nitrogen stable isotopes from common millets (<em>Panicum miliaceum</em>) and foxtail millets (<em>Setaria italica</em>) recovered from four Han Dynasty tombs (Longzaocun, 2002CSX, 2008XJG, and Sanyaocun) and one Late Neolithic site (Ziweitianyuan) in the Guanzhong Basin, Central China. Our results integrate previously published millet isotope data spanning the Late Neolithic to Han Dynasty, reveal a long-term trajectory of agricultural management practices in the Guanzhong Basin under changing climatic conditions from about 3625 BCE to AD 220. Compared to the Late Neolithic period, the <em>δ</em>¹³C values of common and foxtail millets in the Han capital and its surrounding areas decreased by 3.4 ‰ and 3.8 ‰, respectively, while the <em>δ</em>¹⁵N values increased by 6.5 ‰ and 2.7 ‰, indicating an intensification of fertilization strategies. Combined with historical records, this study provides direct evidence of how farmland management in the Han Dynasty maintained soil fertility and agricultural productivity in response to the progressively arid and cold climate of the Holocene, thereby deepening our understanding of soil memory.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"257 ","pages":"Article 109148"},"PeriodicalIF":5.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Leaf litter decomposition exhibits home-field advantage at organic nitrogen-dominated sites and away-field advantage at inorganic nitrogen-dominated sites","authors":"Xi-Mei Geng,&nbsp;Wei-Ming He","doi":"10.1016/j.catena.2025.109153","DOIUrl":"10.1016/j.catena.2025.109153","url":null,"abstract":"<div><div>Soil organic nitrogen (N) and inorganic N function as important plant N sources, both of which dominate at contrasting sites; however, little is known about how the shift from soil organic to inorganic N dominance influences litter decomposition. We conducted a 3-year experiment with <em>Solidago canadensis</em> subject to three treatments: organic N dominance, inorganic N dominance, and co-dominance by both. Building on this experiment, we performed a reciprocal leaf litter transplant experiment, determined leaf transcription, leaf mechanical and chemical traits, soil microbes and abiotic properties, and linked the associations among variables via structural equation modelling. Leaf litter decomposed faster on home soil relative to away soil when soil organic N dominated but slower on home soil when soil inorganic N dominated, and this opposing pattern was linked to the changes in leaf mechanical and chemical traits and microbial decomposers. The shift in soil N relative dominance elicited transcriptional up- and down-regulation, mainly associating with leaf chemical but not mechanical traits. Microbial decomposers were more important than potential litter quality in controlling for leaf decomposition, and bacterial decomposers outweighed fungal decomposers at early stages. Our findings provide evidence that leaf litter decomposition could shift from home-field advantage at organic N-dominated sites to away-field advantage at inorganic N-dominated sites, and highlight the key role of soil N relative dominance in reshaping carbon and nutrient cycling at local landscapes.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"257 ","pages":"Article 109153"},"PeriodicalIF":5.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distance-dependent effects of road traffic on soil water content and vegetation biomass in protected grassland ecosystems","authors":"Zhenzhen Hao ,&nbsp;Qilang Le ,&nbsp;Jiaxin He ,&nbsp;Junyong Ma","doi":"10.1016/j.catena.2025.109114","DOIUrl":"10.1016/j.catena.2025.109114","url":null,"abstract":"<div><div>Road construction is integral to modernization but is often restricted in China’s nature reserves due to potential long-term impacts on ecosystem hydrology and biodiversity. This study examines the effects of a single-lane rural road on soil hydrology, vegetation, and soil properties in the Huihe National Nature Reserve, Inner Mongolia. Sampling plots were established along four transects at distances of 2 m, 10 m, 20 m, 30 m, 40 m, and 50 m from the road edge. Soil and vegetation data were collected during August of 2020 and 2021, and random forest analysis, correlation analysis, and structural equation modeling (SEM) were employed to identify key drivers of soil hydrology. Soil water content (SW) peaked at 30 m (47.27 %), which was 113.01 % higher than at 2 m and 16.43 % higher than at 50 m. Similarly, soil field capacity (FC), capillary porosity (CP), and total porosity (TPo) increased with distance, while bulk density (BD) and soil salinity decreased correspondingly. SW was positively correlated with aboveground biomass (AGB), belowground biomass (BGB), FC, CP, and TPo, and negatively with BD and salinity. The SEM explained 75 % of the variance in SW, revealing direct negative effects of road traffic disturbance on SW (β = -0.49, <em>p</em> &lt; 0.01), along with indirect effects mediated by BD (β = 0.24, <em>p</em> &lt; 0.05) and biomass (β = 0.57, <em>p</em> &lt; 0.001). The road edge effect extenedd up to 30 m, where vegetation recovery and improved soil structure enhanced soil moisture and reduced BD. These findings highlight the importance of addressing road impacts in conservation planning and habitat restoration in protected areas.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"257 ","pages":"Article 109114"},"PeriodicalIF":5.4,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pedogenic fractionation of rare earth elements in chromium- and nickel-enriched ultramafic soils","authors":"Chia-Yu Yang,&nbsp;Zhi-Cheng Zhang,&nbsp;Zeng-Yei Hseu","doi":"10.1016/j.catena.2025.109138","DOIUrl":"10.1016/j.catena.2025.109138","url":null,"abstract":"<div><div>The geochemical behaviors of chromium (Cr) and nickel (Ni) associated with rare earth elements (REEs) have received limited attention in ultramafic soils. This study hypothesized that ultramafic soils originating from distinct ophiolite complexes exhibit varying amounts of Cr and Ni, with REEs fractionation serving as a fingerprint in these soils. A total of 39 horizon samples from eight pedons, including Entisols, Inceptisols and Alfisols, were collected at different landscape positions from three ophiolite complexes in eastern Taiwan. The total concentrations of major elements, Cr, Ni and REEs were determined. Linear correlation and principal component analysis (PCA) were then used to assess variations in the signatures of REEs corresponding to soil properties, Cr, and Ni. The soils from different ophiolite complexes exhibited various Cr and Ni abundance, and signatures of REEs. REEs remained immobile as their concentrations increased during pedogenesis. The ratio between light REEs (LREEs) and heavy REEs (HREEs) of the soils indicated an enrichment of LREEs compared to HREEs. A common minerals origin of REEs and Cr existed. Thus, REEs and Cr underwent similar geochemical processes in the soils. Additionally, Ce anomaly (δCe) increased along with REEs, Cr, and Ni, corresponding to the formation of secondary iron oxides. Differentiation in ΣREEs, Cr, Ni, ΣLREEs/ΣHREEs, (La/Sm)_N, (La/Yb)_N, (Gd/Yb)_N, and δCe by the PCA can be used to separate the soils from various ophiolite complexes, identifying the origins of these soils in Taiwan. However, further validation with additional data from diverse pedoclimate regions is required for future studies.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"257 ","pages":"Article 109138"},"PeriodicalIF":5.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variability of hydraulic characteristics of sediment-laden rill flow under various slopes, water flows and sediment loads","authors":"Chunhong Zhou ,&nbsp;Nan Shen ,&nbsp;Fengbao Zhang ,&nbsp;Dongyuan Li ,&nbsp;Feng Jiao","doi":"10.1016/j.catena.2025.109134","DOIUrl":"10.1016/j.catena.2025.109134","url":null,"abstract":"<div><div>During soil erosion, sediment load of rill flow changes dynamically and may affect its hydraulic characteristics. However, current research on hydraulics of sediment-laden rill flow primarily uses river sand/artificial homogeneous materials as sediment, which significantly differ from natural soil, leaving a research gap on how soil quantity impacts rill flow hydraulics. This study uses natural soil in an indoor rill flume simulation experiment to explore how sediment load influences hydraulic characteristics of rill flow, including flow velocity (<em>V</em>), Darcy–Weisbach friction coefficient (<em>f</em>), Reynolds number (<em>Re</em>), Froude number (<em>Fr</em>), and flow depth (<em>h</em>). Experiments were conducted under combinations of six different sediment loads, five flow discharges, and five slopes. The results indicated that <em>V</em>, <em>f</em>, <em>Re</em>, <em>Fr</em> were significantly influenced by sediment concentration. <em>V</em> and <em>Fr</em> show an upward trend as the sediment load increases, while <em>f</em>, <em>Re</em>, and <em>h</em> demonstrate a downward trend. The sediment load predominantly influences <em>V</em>, <em>f</em>, and <em>Fr</em>, accounting for contributions of 0.33, 0.49, and 0.39, respectively. The influence of slope gradient on <em>V</em> and <em>Fr</em> intensifies as the sediment load increases, while the impact of flow discharge on <em>V</em>, <em>f</em>, and <em>Fr</em> diminishes. As flow discharge increases, the effect of sediment load diminishes on <em>V</em> and <em>Fr</em>, and that of slope gradient strengthens. Two kinds of prediction equations were developed for estimating the hydraulic parameters of sediment-laden rill flow. The models demonstrate high <em>R²</em> values (0.74 to 0.98), suggesting strong performance of the prediction equations. These findings lay a foundation for the better development of a physical process-based rill erosion model. Given the differences in the properties of natural soils, which may impact hydraulic characteristics, it is a limitation of this study that it only focuses on a single soil type, and thus future research should explore the effect of sediment properties on hydraulic characteristics.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"257 ","pages":"Article 109134"},"PeriodicalIF":5.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pedotransfer function for predicting deep-soil bulk density and assessing soil organic carbon and nitrogen stocks across land uses in coarse-textured soils","authors":"Igor L. Bretas ,&nbsp;Jose C.B. Dubeux Jr. ,&nbsp;Liza Garcia ,&nbsp;Luana M.D. Queiroz ,&nbsp;Mario A. Lira Jr. ,&nbsp;Martin Ruiz-Moreno ,&nbsp;Cristian T.E. Mendes ,&nbsp;Tang Zhou ,&nbsp;Chang Zhao ,&nbsp;Kevin R. Trumpp ,&nbsp;Kenneth T. Oduor","doi":"10.1016/j.catena.2025.109145","DOIUrl":"10.1016/j.catena.2025.109145","url":null,"abstract":"<div><div>Accurate soil organic carbon (SOC) and nitrogen (N) stock estimates are crucial for sustainable land management. However, determining soil bulk density (BD), a key factor in estimating nutrient stocks, is challenging due to the labor-intensive nature of traditional methods, especially for deep soil layers. This study aimed to (I) develop a pedotransfer function (PTF) to predict surface and deep soil BD in coarse-textured soils and (II) assess the impact of land use on SOC and N stocks. Soil samples were collected from 42 farms across Florida and South Georgia, totaling 519 composite samples from 173 sites across six land use types and three depth layers (0–15, 15–30, and 30–90 cm). Undisturbed samples were collected to assess soil BD in the topsoil layer (0–15 cm). Soil properties included SOC and N concentrations, soil texture, soil macro and micronutrients, and sieved soil density. A specific PTF was developed using stepwise multiple linear regression with 10-fold cross-validation to predict soil BD in the surface layer and then applied to predict deep soil BD. The developed PTF outperformed four existing models, achieving satisfactory accuracy in the testing data (R² = 0.60, MAE = 0.08, RMSE = 0.11). Combining various physical and chemical soil properties significantly improves prediction accuracy, with sieved soil density emerging as a useful predictor. Land use did not affect cumulative SOC and N stocks in agricultural soils from Florida and South Georgia. Revisiting the sampled sites is recommended to assess the long-term impacts of management practices on SOC and N accrual.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"256 ","pages":"Article 109145"},"PeriodicalIF":5.4,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}