Geoderma Regional最新文献

{"title":"Targeted sludge application for carbon sequestration: A novel approach deployed in semi-arid soils","authors":"Fabio Corradini ,&nbsp;Rodrigo Candia ,&nbsp;María Jiménez","doi":"10.1016/j.geodrs.2025.e00986","DOIUrl":"10.1016/j.geodrs.2025.e00986","url":null,"abstract":"<div><div>Municipal wastewater sludge can contribute to nutrient recycling and carbon accumulation in soils. However, achieving these benefits requires both an appropriate application rate and suitable field selection. This study proposes an approach to guide field selection to optimize carbon accumulation. The approach integrates hydrological and topographical data with historical records of sludge applications and soil chemical properties to predict medium- to long-term organic carbon concentration in soils following sludge application. An opportunity map was developed using a model trained with 14 years of data from a wastewater company in Chile. Following a scenario analysis, two fields (each with eight paddocks) with contrasting soil conditions were selected to evaluate model performance and assess organic carbon distribution within the soil profile. The model achieved a root mean square error of 6.2 g kg⁻¹ for topsoil organic carbon, with an R² value of 0.43. The opportunity map revealed that only 20 % of the paddocks that had received sludge since the company started its operations were located in soils with potential for organic carbon accumulation. The case study indicated that fallow-corn rotations promoted organic carbon loss, regardless of the sludge application rate. Direct observations of the paddocks showed that organic carbon accumulated beyond the ploughing depth. Deep, fine-textured soils contained 156.7 ± 17.0 tons ha⁻¹ of organic carbon, whereas shallow, coarse-textured soils had 131.3 ± 14.9 tons ha⁻¹ after similar sludge application rates. The carbon balances for the topsoil, both predicted and observed, were negative for the studied fields. Since sludge application records included only topsoil data, it was not possible to calculate a net carbon balance. The proposed approach accurately reflected paddock conditions and could serve as a decision-making tool for selecting suitable soils for sludge disposal to maximise soil carbon accumulation.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"42 ","pages":"Article e00986"},"PeriodicalIF":3.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631463","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":"From paddy fields to natural wetlands: Soil quality across successional stages","authors":"Zhen Wang ,&nbsp;Yuxi Peng ,&nbsp;Yuqi Liu ,&nbsp;Guanglan Cao","doi":"10.1016/j.geodrs.2025.e01003","DOIUrl":"10.1016/j.geodrs.2025.e01003","url":null,"abstract":"<div><div>Natural succession following farmland abandonment promotes ecological restoration of wetland soils, yet systematic studies on soil property and quality trends in wetlands over time are scarce. This study evaluated the dynamic changes in soil physicochemical properties and quality across wetlands with varying abandonment durations to elucidate drivers of soil quality restoration. Five sites were selected in the downstream Tumen River, China: paddy fields (PF); restored wetlands abandoned for 5 (Ab5), 15 (Ab15), and 30 years (Ab30); and natural wetlands (NW). Principal Component Analysis was employed to evaluate the relationship between abandonment duration and soil property changes, while Minimum Data Set was used to assess soil quality, with total nitrogen, available nitrogen, total phosphorus, and available phosphorus as core indicators. The results revealed significant differences in soil properties between the upper and lower soil layers, with the most pronounced differences observed in Ab5 compared to other restored wetlands. Total nitrogen had the greatest influence on the soil quality index at both soil depths. The upper soil layer gradually recovered with succession, although agricultural activities still contributed to nutrient loss, while lower layer recovery lagged behind. Ab30 exhibited the highest soil quality index, followed by Ab15, Ab5, NW, and PF, confirming the positive effect of succession on soil quality. These findings highlight critical soil indicators, offering insights for the restoration and sustainable management of degraded wetlands. These findings can be integrated into adaptive management strategies to enhance ecological resilience and promote sustainable land use.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"42 ","pages":"Article e01003"},"PeriodicalIF":3.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931610","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":"Mapping basic properties of Danish sandy soils using on-the-go proximal sensors and terrain attributes","authors":"Ameesh Khatkar,&nbsp;Amélie Beucher,&nbsp;Triven Koganti,&nbsp;Lars Juhl Munkholm,&nbsp;Mathieu Lamandé","doi":"10.1016/j.geodrs.2025.e00981","DOIUrl":"10.1016/j.geodrs.2025.e00981","url":null,"abstract":"<div><div>On-the-go proximal soil sensing based on geophysical sensors is increasingly recognized as the ‘gold standard’ in digital soil mapping due to its capacity to generate high-resolution maps of soil properties at the field scale. However, studies of their limitations are scarce. In this study, we evaluated the suitability of electromagnetic induction (EMI) and gamma-ray spectroscopy (GRS), along with terrain attributes (TA), to predict four soil properties, i.e. clay content, total carbon, bulk density, and soil water content. Soil samples were collected from the top (15 cm depth) and subsoil (40 cm depth) at 69 points distributed in three sandy arable fields. Soil properties were estimated through multiple linear regression (MLR) and cross-validated using the Leave-One-Out Cross-Validation (LOOCV). The MLR models were then filtered based on Lin's concordance correlation coefficient (LCCC), coefficient of determination (R²) and normalized root mean square error (nRMSE). The results indicated that estimating the soil properties in sandy soils is challenging, specifically in subsoil, as reliable models were achieved only for topsoil in two fields. Inverting the EMI data improved modelling results compared to using raw EMI data. Despite the challenges encountered, predictors from the EMI and GRS emerged as key contributors to models with the highest performance, indicating the potential of on-the-go geophysical sensors for generating high-resolution digital soil maps.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"42 ","pages":"Article e00981"},"PeriodicalIF":3.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312748","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":"Harnessing expert knowledge and legacy data for digital soil mapping with no new field surveys","authors":"Jiawei Yang ,&nbsp;Tianwei Wang ,&nbsp;Yihui Bi ,&nbsp;Zhaoxia Li","doi":"10.1016/j.geodrs.2025.e00998","DOIUrl":"10.1016/j.geodrs.2025.e00998","url":null,"abstract":"<div><div>Legacy soil maps, derived from extensive soil surveys, contain invaluable information crucial for soil management practices. However, these maps risk obsolescence due to outdated technology, changes in classification systems, and evolving soil types. Addressing the need for high-precision and high-resolution soil maps, particularly in regions lacking comprehensive survey data, this study proposes an innovative framework for Expert Knowledge and Diagnostic Information-based Digital Soil Mapping (ED-DSM), enabling digital soil mapping with no new field surveys by integrating expert knowledge with diagnostic information. The framework leverages diagnostic horizons and attributes from Chinese Soil Taxonomy (CST), combined with expert assessments of the probability of certain diagnostic features within legacy map units, to extract pseudo-points and assign diagnostic feature types using expert-guided probability-constrained deterministic annealing clustering. Through repeated random sampling and random forest modeling, probability distributions for all diagnostic features are generated, and retrieval rules are constructed to create probabilistic soil type maps. Application of the framework in a county in China yielded the following key findings: (1) ED-DSM successfully generated probability distributions for 16 diagnostic features and produced maximum and secondary probability distribution maps of soil types at the order, suborder, group, and subgroup levels based on the CST, demonstrating exceptional spatial detail; (2) Validation using 33 soil profiles showed an average mapping accuracy for diagnostic features ranging from 0.62 to 0.99, while the average accuracy for soil types at the order, suborder, group, and subgroup levels under maximum probability were 65.86 %, 65.03 %, 47.85 %, and 44.15 %, respectively; and (3) Considering secondary probabilities improved soil type mapping accuracy by 3.55 %–7.19 %, further confirming the method's efficiency and robustness. The ED-DSM framework enables rapid mapping of soil diagnostic features and types without the need for additional soil surveys, offering a cost-effective and scalable solution for resource-limited regions and providing actionable scientific support for soil management practices.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"42 ","pages":"Article e00998"},"PeriodicalIF":3.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880321","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":"Copper isotope signatures during red earth weathering and their significance for soil reticulation (Xuancheng, South China)","authors":"Daqian Zhang ,&nbsp;Lian Zhou ,&nbsp;Thomas J. Algeo ,&nbsp;Ke Yin ,&nbsp;Lanping Feng ,&nbsp;Yu Jiao ,&nbsp;Yating Hu ,&nbsp;Jinhua Liu ,&nbsp;Hanlie Hong","doi":"10.1016/j.geodrs.2025.e00997","DOIUrl":"10.1016/j.geodrs.2025.e00997","url":null,"abstract":"<div><div>Copper isotopes (δ⁶⁵Cu) can provide critical insights in the study of weathering, pedogenic processes, and paleoenvironmental evolution. However, the behavior of Cu and its isotopic fractionation mechanisms in complex soil-forming systems are not well known. The Xuancheng profile in South China is characterized by a distinctive reticulate structure, consisting of white veins and red matrix. It is an excellent field laboratory for the study of Cu isotope variation in pedogenic systems with complex redox and developmental histories. Our results show that Cu is present mainly in clay minerals, and its isotopic composition exhibits limited variability, ranging from −0.29 ± 0.02 ‰ to −0.15 ± 0.02 ‰ (relative to NIST 976). In the modern soil layer (MSL) and homogenous red earth layer (HREL), bulk Cu isotopes (−0.22 to −0.15 ‰) are similar to those of the residual fraction (δ⁶⁵Cu_res = −0.29 to −0.21 ‰), suggesting that Cu in clay minerals is relatively stable during oxic weathering. Cu isotopic compositions in the middle and lower reticulated red earth layer (RREL) were affected by redox variations during the reticulation process. In the middle RREL (1.7–2.4 m), δ⁶⁵Cu variation was related to decomposition or transformation of iron oxides during weak reticulation. The clay assemblages, Cu isotopes of bulk soil and residual fractions indicate that Cu isotopic variation in the RREL was positively correlated with the presence of reticulation but not to the intensity of the reticulation process. Furthermore, the white veins contain isotopically heavier Cu than the red matrix of the LRREL, which was related to dissolution of iron oxides containing isotopically light Cu in the red matrix under seasonally wet-dry climate conditions. These results advance our understanding of the mechanisms of Cu-isotopic fractionation during chemical weathering in pedogenic environments.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"42 ","pages":"Article e00997"},"PeriodicalIF":3.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018624","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":"Factors governing the formation, distribution and taxonomy of soils with glossic horizons and features in the contiguous USA","authors":"James G. Bockheim ,&nbsp;Ryan C. Hodges ,&nbsp;Alfred E. Hartemink","doi":"10.1016/j.geodrs.2025.e00973","DOIUrl":"10.1016/j.geodrs.2025.e00973","url":null,"abstract":"<div><div>Soils with glossic horizons and features (referred to here as glossic soils) have horizons with interfingering of albic materials in the upper part of an underlying argillic or natric horizon. In the contiguous (exclusive of Alaska and Hawaii and US territories) USA there are 739 soil series covering 227,000 km² with a glossic horizon or glossic features. Here we analyze site factors and soil properties that govern their formation, distribution and taxonomic classification. Seven distinctive geographic regions containing glossic soils were examined: the Great Lakes (37 % of area), Gulf Slope (23 %), Lower Mississippi Valley (12 %), Central Thin Loess-Till region (9 %), Rocky Mountains (9 %), Northern Great Plains (6 %), and Florida Flatwoods (2 %). Glossic soils in these regions have the following features: 90 % of the soil series are well, moderately well, or somewhat poorly drained, 92 % are covered with broadleaved or mixed broadleaved-coniferous forest, 92 % are deep or very deep (&gt;100 cm), 85 % have mixed or siliceous mineralogy according to Soil Taxonomy (ST), 73 % have a coarse-loamy, fine-loamy, fine-silty, or fine particle size class according to ST, and 70 % of the soils have a base saturation &gt; 70 % in the 0 to 50 cm depth. About 40 % of what was once may have been the argillic or natric horizon has been degraded, but some argillic horizons in the Great Lakes and Lower Mississippi Valley have been completely degraded to depths of &gt;200 cm. Five constructs explaining the origin of glossic horizons are explored, including (i) lithologic discontinuities, (ii) a former periglacial climate and permafrost, (iii) shifts in ecotones related to climate change, (iv) increased podzolization following leaching of carbonates; and (v) redox processes derived from a fluctuating water table. Glossic soils occur on sediments dated from early Holocene to early Pleistocene age, or older. About 38 % of the soil series likely have never experienced permafrost or a periglacial climate. Formation of a glossic horizon or features is a retrograde form of pedogenesis initiated by the loss of carbonates, acidification, and the development of redoximorphic features. This process may be driven by natural stages in pedogenesis or by major changes in early Holocene climate and vegetation. About two-thirds of the glossic soils in the contiguous USA do not meet the requirements of albeluvic glossae or retic properties in the WRB classification system.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"42 ","pages":"Article e00973"},"PeriodicalIF":3.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271187","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":"Cashew residue biochar enhances the pore network of cohesive soil in the Brazilian Coastal Tablelands","authors":"Jaedson Cláudio Anunciato Mota ,&nbsp;Emanuela Barbosa dos Santos ,&nbsp;Alexandre dos Santos Queiroz ,&nbsp;Odair Pastor Ferreira ,&nbsp;Antônio Gomes de Souza Filho ,&nbsp;Laís Gomes Fregolente ,&nbsp;Francisca Gleiciane da Silva ,&nbsp;Arthur Prudêncio de Araujo Pereira ,&nbsp;Helon Hébano de Freitas Sousa ,&nbsp;Mirian Cristina Gomes Costa ,&nbsp;Ícaro Vasconcelos do Nascimento","doi":"10.1016/j.geodrs.2025.e00979","DOIUrl":"10.1016/j.geodrs.2025.e00979","url":null,"abstract":"<div><div>Soil physical quality is essential for agricultural productivity and environmental sustainability. Cohesive horizons often present high bulk density and low macroporosity, limiting water flow and aeration. This study evaluated the application of biochar derived from cashew residue as a conditioner to improve the physical quality of cohesive soils. We hypothesized that cashew residue biochar enhances soil (macro) porosity, pore connectivity, water retention, and water and airflow in cohesive horizons. The experiment was conducted with five biochar application rates (0, 5, 10, 20, and 40 Mg ha⁻¹) in a randomized design, using disturbed soil samples manually packed into cylinders to ensure consistent bulk density. We analyzed the soil-water retention curve (SWRC), pore size distribution curve (PSDC), air permeability, pore continuity indices, and saturated hydraulic conductivity. Results demonstrated significant improvements in soil structure and pore functionality at higher biochar doses (20–40 Mg ha⁻¹), despite the pore-blocking effect observed at these rates. The 40 Mg ha⁻¹ treatment increased macroporosity by 15.3 %, while pore connectivity indices N and Log M rose by 34.2 % and 18.3 %, respectively. Available water improved by 9.1 %, and air permeability increased by 63.3 %, 45.0 %, 20.7 %, and 43.3 % at matric potentials of −6, −10, −33, and −100 kPa, respectively. Saturated hydraulic conductivity also increased by 18 % with the highest dose. These findings demonstrate the potential of cashew residue biochar to enhance the physical quality of cohesive soils, supporting more efficient soil management and sustainable agriculture. Applications between 20 and 40 Mg ha⁻¹ are recommended to optimize improvements in soil physical properties.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"42 ","pages":"Article e00979"},"PeriodicalIF":3.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321068","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":"From global trends to local realities: SOC accrual of improved management practices in northwestern Europe","authors":"J.A.B. Schepens ,&nbsp;C.J. Koopmans ,&nbsp;D.T. Heupink ,&nbsp;B.G.H. Timmermans ,&nbsp;N. Gentsch ,&nbsp;S. Martens ,&nbsp;J. de Haan ,&nbsp;R.E. Creamer ,&nbsp;G.Y.K. Moinet","doi":"10.1016/j.geodrs.2025.e00983","DOIUrl":"10.1016/j.geodrs.2025.e00983","url":null,"abstract":"<div><div>Numerous meta-analyses provide rates of carbon accrual for specific management practices at global scales. However, understanding how specific farming practices and soil properties influence SOC accrual within defined regions remains challenging. We examined whether three well-investigated improved management practices (organic fertilizer input, cover crops, and non-inversion tillage) increase SOC stocks within arable farming in Northwestern Europe. It was hypothesized that SOC accrual would be primarily driven by clay content. We sampled eleven experimental sites, where experimental durations, clay content, and SOC content ranged from 5 to 23 years, 1–20 %, and 0.9–2.3 %, respectively. The sites were sampled according to a uniform protocol for two depths (0–30 and 30–60 cm). Our cross-site analysis revealed substantial variation in SOC responses to the management practices, even within a single climatic region. There was a clear trend of increasing SOC accrual with increasing organic matter inputs from organic amendments, but effects were site dependent. Besides organic amendments, only frost-resistant cover crop species combined with non-inversion tillage accrued SOC at one site. Contrary to our hypothesis, clay content was not the primary driver of SOC accrual. Instead, SOC accrual was most strongly driven by the interplay between experimental duration and the initial SOC stock. Our study underscores the need for context-specific SOC management strategies that account for the initial SOC levels.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"42 ","pages":"Article e00983"},"PeriodicalIF":3.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144557539","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":"Based on soil carbon saturation capacity what is the potential for soil carbon improvement in rice-based cropping systems of northwest region of Bangladesh?","authors":"Md. Noor E. Alam Siddique ,&nbsp;Lisa A. Lobry de Bruyn ,&nbsp;Yui Osanai ,&nbsp;Chris N. Guppy","doi":"10.1016/j.geodrs.2025.e00975","DOIUrl":"10.1016/j.geodrs.2025.e00975","url":null,"abstract":"<div><div>The regional study determined soil organic carbon (SOC) saturation capacity and deficit of rice-based cropping systems (RBCS) in a range of land resource, crop and management combinations to identify which RBCS had the greatest potential for improving SOC. Six RBCS were examined and the crop-diversified and mustard-rice triple cropping systems in medium highland (MHL) had the greatest potential with the highest carbon saturation capacity and lowest carbon deficit. This finding was largely attributed to the location of these RBCS where the soil's dominant clay mineral types (1:1 or 2:1 clays) and level of inundation resulted in a higher proportion of fine soil particles compared to the other RBCS. Higher SOC levels recorded in these systems, hence the lower soil carbon deficit, was also partly due to greater carbon inputs from three annual crops and greater retention of crop residue. In contrast, maize-rice, wheat-rice, and vegetable-rice triple cropping systems on highland (HL) had less potential for soil carbon improvement. The location of these RBCS in HL areas, which are prone to SOC loss through soil erosion, combined with less crop diversity, low crop residue retention and greater soil disturbance through tillage further reduces the likelihood of SOC increases. Largely due to these management factors the most vulnerable RBCS is rice-rice double cropping system on MHL, which has a 76 % deficit to carbon saturation capacity, despite a more favorable land resource. To address soil carbon deficits, especially under vulnerable soil types, various management strategies could be applied, including: optimal fertilization, use of organic manures, crop rotations, and greater crop residue retention. Enhancing soil resilience is crucial for maintaining productivity, especially in high tillage systems. Greater crop diversity and increased residue retention could improve carbon sequestration, benefiting soil health and climate change mitigation. Promoting crop-diversified and mustard-rice systems among smallholder farmers in suitable regions of the Floodplain and Terrace soil physiography throughout Bangladesh, is recommended, while other systems with higher soil carbon deficits require increased carbon inputs, by reducing fallow periods and crop residue removal in the region. Support for smallholders through access to land of greater land capability, subsidized inputs, and agricultural extension activities is essential for enhancing soil resilience and productivity in RBCS.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"42 ","pages":"Article e00975"},"PeriodicalIF":3.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144298084","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":"Croplands expansion and agricultural management changes: Soil erosion scenarios in the Rolling Pampa (Argentina)","authors":"Sebastian Vangeli ,&nbsp;Filipe Behrends Kraemer ,&nbsp;Mario G. Castiglioni ,&nbsp;Celio I. Chagas","doi":"10.1016/j.geodrs.2025.e00994","DOIUrl":"10.1016/j.geodrs.2025.e00994","url":null,"abstract":"<div><div>In recent decades, the Rolling Pampa experienced land-use and agricultural management changes that promote soil erosion, such as cropland expansion into grasslands and simplified crop rotations. However, widespread adoption of no-tillage (&gt;90 %) has been reported beneficial for soil conservation. This study estimated the impact of these changes on water erosion in the Arroyo del Tala watershed (≈80,600 ha) over the past three decades. Croplands expansion and rotations simplification were estimated using remote sensing classifications and NDVI trends analysis. Their impact, along with no-till adoption, was individually assessed at the watershed level by integrating the Universal Soil Loss Equation (USLE) within a GIS environment. The combined effect on erosion was then assessed by simultaneously applying the three agricultural changes. Results showed that cropland expanded into 26.1 % of the watershed between 1987 and 2015, with more than half occurring on erosion-prone lands. Negative NDVI trends (2000–2017) indicated declining crop rotation intensification. Cropland expansion and rotation simplification increased estimated average soil erosion at a watershed level by 20 % and 19.8 %, respectively, leading to estimated sediment yield increases of 28.9 % and 21 % (i.e., net soil loss exported from the catchment). In contrast, no-tillage adoption reduced soil erosion by 57.2 %, decreasing sediment yield by 58.4 %. The combined effect of all practices was a 35.3 % reduction in the estimated soil erosion and a 24.3 % decrease in sediment yield. Despite these benefits, previous studies in the same watershed showed widespread ephemeral and permanent gullies formation in recent years, suggesting that recent land-use changes primarily controlled sheet erosion while having little effect on erosive runoff. These findings support landscape planning, identifying areas vulnerable to degradation and lands suitable for sustainable cropping under diversified no-tillage systems.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"42 ","pages":"Article e00994"},"PeriodicalIF":3.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810390","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}