Geoderma Regional最新文献

{"title":"Do Chernozems occur in Poland? Distribution, properties and regional variation of black soils in the loess belt of Poland","authors":"Cezary Kabala ,&nbsp;Beata Labaz ,&nbsp;Adam Bogacz ,&nbsp;Michał Dudek ,&nbsp;Dariusz Gruszka ,&nbsp;Szymon Młynek ,&nbsp;Jarosław Waroszewski","doi":"10.1016/j.geodrs.2025.e01007","DOIUrl":"10.1016/j.geodrs.2025.e01007","url":null,"abstract":"<div><div>Although Chernozems have appeared on Polish soil maps since the late 19th century, their occurrence in Poland is omitted from global and regional soil maps and the reports of foreign authors. This paper aims to verify the occurrence, abundance and properties of soils that meet the criteria for Chernozems as defined by the World Reference Base for Soil Resources (WRB) in five ‘chernozemic’ regions in the loess belt of southern Poland. This analysis identified Chernozems in 15–55 % of the studied soil profiles in four of the five ‘chernozemic’ regions, while the major accompanying soils in all regions were Phaeozems. Most Phaeozems have chernic horizons; therefore, the crucial characteristics allowing classification as a Chernozem or Phaeozem were the presence and depth of secondary carbonates. The spatial variation of Haplic and Calcic Chernozems, which prevail in the (south) central and eastern regions, was strongly affected by erosion, while clay illuviation was relatively poorly indicated in soil profiles. Soils in the fore-mountain regions were extensively leached of carbonates and often had argic horizons, which implies a predominance of Luvic Phaeozems. Gleyic/Stagnic Luvic Chernozems/Phaeozems prevailed in the westernmost region, which is characterised by plain topography and imperfect water drainage. The topsoil pH, soil organic carbon and clay contents of Polish Chernozems and Phaeozems decreased from the easternmost region towards the west and south, where the humid ‘oceanic influences’ or ‘mountain influences’, respectively, are considered responsible for more intense soil leaching during the Holocene period. The soil organic carbon (regional mean values in a range of 1.7–2.8 %), clay (11–21 %) and pH (6.4–7.4) values in Chernozems and Phaeozems developed from loess in southern Poland are lower compared to Chernozems of the steppe zone of southern Russia, Ukraine and Moldova, but comparable with their values reported from neighbouring Central European countries (northwestern Ukraine, Slovakia, Czechia and Germany). The presence of chernic horizons in all studied regions affirms (a) the polygenetic origin of Chernozems and Phaeozems with subsurface argic horizons, and (b) the large potential of regenerative or conservative agriculture in combating erosion and restoring humus-rich and biologically active topsoil layers, which can preserve Chernozems and Phaeozems against further decay in southern Poland.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"43 ","pages":"Article e01007"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145098699","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 sub-surface distribution of soil organic carbon stocks in South Africa's arid and semi-arid landscapes: Implications for land management and climate change mitigation","authors":"Omosalewa Odebiri ,&nbsp;Onisimo Mutanga ,&nbsp;John Odindi ,&nbsp;Rob Slotow ,&nbsp;Paramu Mafongoya ,&nbsp;Romano Lottering ,&nbsp;Rowan Naicker ,&nbsp;Trylee Nyasha Matongera ,&nbsp;Mthembeni Mngadi","doi":"10.1016/j.geodrs.2025.e01022","DOIUrl":"10.1016/j.geodrs.2025.e01022","url":null,"abstract":"<div><div>Soil organic carbon (SOC) stocks are critical for land management strategies and climate change mitigation. However, understanding SOC distribution in South Africa's arid and semi-arid regions remains a challenge due to data limitations, and the complex spatial and sub-surface variability in SOC stocks driven by desertification and land degradation. To support soil and land-use management practices, as well as advance climate change mitigation efforts, there is an urgent need to provide more precise SOC stock estimates within South Africa's arid and semi-arid regions. Hence, this study adopted remote-sensing approaches to determine the spatial sub-surface distribution of SOC stocks and the influence of environmental co-variates at four soil depths (i.e., 0-30 cm, 30-60 cm, 60-100 cm, and 100-200 cm). Using Extreme Gradient Boosting (XGBoost) and Random Forest (RF) regression-based algorithms, the study found the former (RMSE values ranging from 10.50 t/ha to 16.60 t/ha) to be a superior model of SOC than the latter (RMSE values ranging from 10.83 t/ha to 18.25 t/ha). Thereafter, using a variable importance analysis, the study demonstrated the influence of topo-climatic and soil texture on SOC stocks at different depths. The study further demonstrated that the top 100 cm of the soil profile contained more than 70 % of the total SOC stocks, with the topsoil (0–30 cm) accounting for 34 % of the total SOC. The models exhibited a general decreasing trend in SOC stocks across the first three soil depth intervals. Additionally, the study revealed substantial spatial variability in SOC stocks, with greater accumulation in the topsoil observed in central and northern regions, while deeper SOC storage was more pronounced in the eastern parts of the study area. Overall, these findings enhance the understanding of SOC dynamics in South Africa's arid and semi-arid landscapes and emphasizes the importance of considering site specific topo-climatic characteristics for sustainable land management and climate change mitigation.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"43 ","pages":"Article e01022"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145684586","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":"Territorial mapping of soil type and land cover influence on ecosystem services","authors":"Clémentine Chirol ,&nbsp;Delphine Derrien ,&nbsp;Laurent Saint-André ,&nbsp;Paul-Olivier Redon ,&nbsp;Geoffroy Séré","doi":"10.1016/j.geodrs.2025.e01008","DOIUrl":"10.1016/j.geodrs.2025.e01008","url":null,"abstract":"<div><div>The delivery of soil-based ecosystem services (ES) is of increasing importance for spatial planners. Soils are complex and heterogeneous systems, therefore synthesizing pedological expertise into decision support maps presents ongoing challenges. Our approach considers the properties of the entire pedon to assess the contribution of different soil types and land covers to ES delivery at the territorial scale.</div><div>This study adapts the Destisol decision support tool, initially developed for urban soils and therefore adapted to a high variety of pedons influenced by human activities, to a rural setting containing croplands, grasslands and forests. 86 soil profiles from the study territory are grouped into eight dominant soil types. Nine ES are evaluated based on the horizon-specific physico-chemical properties of each soil type, and mapped following a territorial 1/50,000 pedological map.</div><div>The study territory has a high potential for ES provision with a mean score of 2 +/− 0.2 (min: 1.7, max: 2.7) on a scale of 0 to 3. Soil type is shown to have a significant impact on ES supply under the same land cover. Eutric Cambisols rank highly for provisioning and regulating services, Gleysols rank poorly for water quality but highly for global climate mitigation, and shallow rocky soils rank poorly for most services except water infiltration. Mapping results and soil-type specific ES scores can be used as spatial planning tools to quantify the impact of a given scenario of land cover change on ES scores, and thereby contribute to efforts towards no net loss of soil functionality.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"43 ","pages":"Article e01008"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145098701","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":"Corrigendum to ‘Mapping sub-surface distribution of soil organic carbon stocks in South Africa's arid and semi-arid landscapes: Implications for land management and climate change mitigation’ [Geoderma Regional Volume 37, 2024, e00817]","authors":"Omosalewa Odebiri ,&nbsp;Onisimo Mutanga ,&nbsp;John Odindi ,&nbsp;Rob Slotow ,&nbsp;Paramu Mafongoya ,&nbsp;Romano Lottering ,&nbsp;Rowan Naicker ,&nbsp;Trylee Nyasha Matongera ,&nbsp;Mthembeni Mngadi","doi":"10.1016/j.geodrs.2025.e01019","DOIUrl":"10.1016/j.geodrs.2025.e01019","url":null,"abstract":"","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"43 ","pages":"Article e01019"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145684585","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":"Response of soil nutrient losses to erosion-deposition processes and land use managements: A case study in southeastern Tigray of northern Ethiopia","authors":"Araya Kahsay,&nbsp;Selama Gebreslassie Yebyo,&nbsp;Yohannes Gerezihier Gebremedhin","doi":"10.1016/j.geodrs.2025.e01032","DOIUrl":"10.1016/j.geodrs.2025.e01032","url":null,"abstract":"<div><div>Soil erosion is one of the major degradation processes posing far-reaching threats to production sustainability and food security, associated with its marked contribution to soil quality degradation. There have been substantial studies on nutrient losses by erosion in Ethiopia, but rarely have the redistribution/deposition process been considered. In this study, we compared soil and nutrient loss of shrublands, grasslands and croplands to examine their sensitivity to erosion and deposition and land use managements. Quantification of soil erosion and deposition was achieved through Unit Stream Power Soil Erosion and Deposition model. Furthermore, soil organic carbon (SOC), total nitrogen (TN) and available phosphorus (AP) concentrations of the three land use managements were measured and analyzed to 30 cm depth. The results exhibited that soil and nutrient loss and their associated cost were heavily explained by variations in land use management. The magnitude of soil eroded far exceeded that of deposited in croplands and grasslands, while it was almost comparable to deposition rate in shrublands. Nutrient stocks in shrublands were higher than those in grasslands and croplands. Land use contributions to nutrient loss showed the orders of grasslands (4.22 Gg) &gt; croplands (3.91 Gg) &gt; shrublands (0.71 Gg). Out of the total nutrients transported by erosion (i.e. 16.78 Gg), ca. 47.47 % (7.96 Gg) is left redistributed within the area through deposition, with the remaining 8.81 Gg (52.53 %) leaving the area. Nutrient loss due erosion is causing to an average annual economic loss of about 7.95 million US$, &gt; 90 % of which is contributed by grasslands and croplands, while that shared by shrublands was relatively small. Results implied the importance to consider erosion and deposition processes while assessing soil and nutrient depletion to precisely assess economic implications of erosion. Grasslands and croplands are more prone to erosion than shrublands, emphasizing the need to consider for improved cultivation and grazing managements to monitor soil quality degradation induced through erosion.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"43 ","pages":"Article e01032"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617856","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":"Changes in land use and buffaloes trampling effects on soil health in environmentally vulnerable areas of an Atlantic Forest biome in southern São Paulo State, Brazil","authors":"Rodrigo Batista Pinto ,&nbsp;Francisca Alcivania de Melo Silva ,&nbsp;Heitor Marcel da Silva Ribeiro ,&nbsp;Pedro Henrique de Oliveira Vilela ,&nbsp;Rafael Duarte L'Abbate ,&nbsp;Fabiana Gomes da Silva ,&nbsp;Diogenes L. Antille ,&nbsp;Zigomar Menezes de Souza ,&nbsp;Reginaldo Barboza da Silva","doi":"10.1016/j.geodrs.2025.e01011","DOIUrl":"10.1016/j.geodrs.2025.e01011","url":null,"abstract":"<div><div>This study was conducted to determine the impact of land use and livestock farming on riparian areas in the state of São Paulo, Brazil. A range of physical, hydraulic and chemical properties were measured in hydromorphic soils under four scenarios; namely: i) native vegetation (NV), ii) semi-extensive grazing (SEG, ∼21 animal units ha⁻¹) with 30 years of established practice; iii) intensive grazing with 20 years of established practice (IG20, ∼24 animal units ha⁻¹); and iv) intensive grazing after 1 year of being implemented (IG1, ∼21 animal units ha⁻¹). The replacement of native vegetation with pastures, regardless of the duration and type of management, resulted in significant changes in soil structure and soil functioning, due to increased bulk density and penetration resistance, and concurrent reductions in macroporosity and saturated hydraulic conductivity. The soil under long-term intensive management (IG20) showed less structural degradation, closely resembling the conditions observed in the native vegetation area (NV). By contrast, the soil under semi-extensive grazing (SEG) management exhibited significant damage to the soil structure, which affected all measured soil physical and hydraulic properties. Despite these negative impacts on soil structure, SEG exhibited higher levels of total carbon, total nitrogen, and total sulfur. The results suggested that the intensive management system (IG20) tended to maintain higher soil quality in riparian areas than the condition observed under native vegetation, although these differences cannot be exclusively ascribed to grazing.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"43 ","pages":"Article e01011"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222460","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":"Pedotransfer-based bulk density: An alternative approach to enable soil carbon accounting in grain regions of Brazil","authors":"Ruan Carnier,&nbsp;Alfredo José Barreto Luiz,&nbsp;Joaquim Ernesto Bernardes Ayer,&nbsp;Nilza Patrícia Ramos,&nbsp;Sandra Furlan Nogueira,&nbsp;Cristiano Alberto de Andrade","doi":"10.1016/j.geodrs.2025.e01017","DOIUrl":"10.1016/j.geodrs.2025.e01017","url":null,"abstract":"<div><div>Soil bulk density (BD) is a critical variable in the estimation of carbon (C) stocks, which are central to agriculture-based C projects. However, field sampling of BD is often labor-intensive and costly. Pedotransfer functions (PTFs), which estimate BD from easily measured soil attributes, provide a promising alternative. This study evaluated 6941 observations from plots under grain production (GR) and 1246 from native vegetation (NV), sampled down to 1 m depth across 47 farms in the South-Central region of Brazil. Each observation included BD and the contents of sand, silt, clay, and C. Thirty-three PTFs from the international literature were tested, and four new ones (F34, F35, F36, F37) were developed. Function performance was assessed using the correlation coefficient (r), function efficiency (FE), mean error (ME), and root mean square error (RMSE). Two literature-based PTFs and the four developed in this study achieved the best performance, with RMSE ranging from 0.11 to 0.20 and ME from −0.01 to 0.09. Among them, F36 and F37 showed the strongest predictive ability, with FE values of 0.41 and 0.66 and r of 0.74 and 0.81, respectively. Carbon stocks estimated from BD predicted by the selected PTFs were strongly correlated with measured stocks (<em>r</em> &gt; 0.90), demonstrating that these functions are reliable alternatives to direct BD measurements for estimating C stocks. For conservative application in C projects, function F37 is recommended for layers below 30 cm, while BD should continue to be directly measured in shallower layers, where management practices exert stronger influence.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"43 ","pages":"Article e01017"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270233","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":"Brazilian Latossolos (Ferralsols, Oxisols) from different biomes: a multiproxy study on the spatial variability of the most weathered tropical soils in South America","authors":"Carlos Ernesto Gonçalves Reynaud Schaefer ,&nbsp;Rafael Gomes Siqueira ,&nbsp;Luís Flávio Pereira ,&nbsp;Lucas de Carvalho Gomes ,&nbsp;Pedro Henrique Araújo Almeida ,&nbsp;Márcio Rocha Francelino ,&nbsp;Francis Henrique Tenório Firmino ,&nbsp;José João Lélis Leal de Souza ,&nbsp;João Carlos Ker ,&nbsp;Elpídio Inácio Fernandes-Filho","doi":"10.1016/j.geodrs.2025.e01012","DOIUrl":"10.1016/j.geodrs.2025.e01012","url":null,"abstract":"<div><div>The Brazilian Latossolos (Ferralsols-WRB, Oxisols-Soil Taxonomy) are generally well-drained soils, strongly and deeply altered, rich in Al and Fe oxyhydroxides, nutrient-poor and morphologically uniform, due to long-term weathering and continuous leaching. Despite the occurrence in all Brazilian territory, little is known about the variability of basic attributes of Latossolos across the country. We hypothesize that the Brazilian Latossolos present a considerable variability in soil attributes that can be regionally manifested and traced according to the environmental characteristics of different Brazilian biomes. In this way, we compared a suite of soil attributes from Latossolos Amarelos, Latossolos Vermelho-Amarelos and Latossolos Vermelhos from the biomes Amazonia, Atlantic Forest, Cerrado, and Caatinga biomes, using robust legacy data produced by published soil surveys. The Latossolos Vermelhos represent the suborder with the greatest degree of weathering, exhibiting the highest contents of Fe and Al oxyhydroxides, clayey texture, greatest microaggregate development, pH and base saturation, and presenting the lowest contents of available P. Conversely, the Latossolos Amarelos exhibited the highest contents of kaolinite, silt, sand, and the highest soil consistency and Al saturation. The Latossolos Vermelho-Amarelos, in turn, presented intermediate characteristics, confirming that soil color is a key attribute for differentiating the pedogenetic development of Latossolos, regardless of the biome. With reference to the Brazilian biomes, the Latossolos of the Cerrado and Atlantic Forest presented the greatest weathering degree, evidenced by the lowest values of Ki, Kr, and silt/clay ratios, as well as other characteristics that reveal the great intensity of desilication, ferralitization, gibbsitization and pedalization. Despite the hot and wet equatorial climate and the general soil acidity in Amazonia, Amazonian Latossolos presented lower pedogenetic development than the Cerrado and Atlantic Forest soils, which are in close association with the sedimentary parent material, resilication by forest Si cycling, subdued topography and poor soil internal drainage. The Latossolos from the semi-arid Caatinga showed the lowest weathering and pedogenesis degrees, and represent relict soils from past wetter climates, preserved in the only Brazilian semi-arid biome.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"43 ","pages":"Article e01012"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222368","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":"An Observations Framework for data interoperability: Enabling descriptive regional data for soil and land management in the Australian context","authors":"M. Wong ,&nbsp;B. Simons ,&nbsp;H. Gillett ,&nbsp;N.J. Robinson ,&nbsp;A. Neyland ,&nbsp;P. Dahlhaus ,&nbsp;A. MacLeod ,&nbsp;H. Thompson","doi":"10.1016/j.geodrs.2025.e01029","DOIUrl":"10.1016/j.geodrs.2025.e01029","url":null,"abstract":"<div><div>Regional resource management organisations and researchers require consistent soil data for effective knowledge transfer and monitoring. However, the data collected by soil practitioners can fall outside the data permissible in national and international interoperability efforts. This study fills a gap by delivering diverse data from farming groups, catchment managers, and university researchers via a unique ‘Observations Framework’ based on the observation and measurement (O&amp;M) standard, not implementing soil domain model constraints.</div><div>One hundred and sixty-five individual soil properties were successfully described, resulting in the delivery of interoperable, region-specific soil data. A significant amount of data fell outside existing national soil model implementations, with only 30 % of chemical observation procedures related to the Australian Soil and Land Survey Handbook Series (ASLSH) standard, and 38 % lacking procedure descriptions altogether. Procedures for soil physics and biology measurements entirely outside the ASLSH. Contextual information, including sampling protocol, was generally absent or challenging to align with FAIR (Findable, Accessible, Interoperable, and Reusable) vocabularies.</div><div>Concluding lessons for delivering diverse regional FAIR soil data include the need to 1) Support standard metadata schema framework for FAIR soil data, understanding the value of context and data quality elements to end-users; 2) Develop and support well-governed FAIR vocabularies for soil through expert and community input, particularly on properties and sampling; and 3) Investigate the potential for AI in the delivery of soil data and information, including where graph technology and domain models may be beneficial, and where soil domain expertise is critical.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"43 ","pages":"Article e01029"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145684584","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":"Impact of long-term use of fertilizers on soil phosphorus fractions and its uptake","authors":"Palwinder Singh,&nbsp;Gurmeet Singh Dheri,&nbsp;Gazala Nazir,&nbsp;Sukhpreet Singh","doi":"10.1016/j.geodrs.2025.e01021","DOIUrl":"10.1016/j.geodrs.2025.e01021","url":null,"abstract":"<div><div>Understanding the dynamics and transformation of soil phosphorus (P) is imperative for formulating sustainable agricultural P management strategies. This study examined the long-term impacts (over 52 cropping cycles) of various fertilization regimes on P dynamics in Inceptisol (Typic Ustochrept) and the associated productivity of the maize-wheat cropping system. The fertilizer treatments involved: T1) control, T2) 50 % NPK, T3) 100 % NPK (120:26.5:25.0 kg ha⁻¹, N:P:K), T4) 100 % NPK, T5) 150 % NPK, and T6) 100 % NPK + farmyard manure (FYM @10,000 kg ha⁻¹), implemented in a randomized block design with three replicates. The source of P was single super phosphate, except T4 (diammonium phosphate). The results highlight a significant accumulation of P under continuous fertilization compared to the control treatment. Olsen P in surface soil under the 100 % NPK + FYM treatment exhibited an increase of 522 % relative to the control and 108 % compared to the 100 % NPK treatment. The accumulation was characterized by varied distributions across inorganic and organic P fractions, which were influenced by the fertilizer applications. A general enhancement in P fractions was observed with fertilization, with levels ranging from a minimum under 50 % NPK to a maximum under 100 % NPK + FYM treatment. The distribution of P fractions followed the order: Ca-P &gt; Al-P &gt; Org-P &gt; Fe-P &gt; Red-P (reductant-soluble phosphate) &gt; Sol-P (soluble P). Regarding the distribution of P fractionation, an incubation study was conducted to assess the effects of organic amendments, specifically paddy straw and FYM, on P fractions at different levels of added P. The findings revealed a pronounced enhancement in P distribution into its labile fractions. The P balance sheet indicated a net positive soil P balance following 52 cropping cycles under varied fertilization except control. Additionally, correlations between soil P fractions and crop yield were calculated. These findings necessitate further investigation to refine P management strategies to optimize the utilization of residual P for sustainable crop production.</div></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"43 ","pages":"Article e01021"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324976","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}