Geoderma Regional最新文献

{"title":"Shallow soils in dryland ecosystems: Drivers of C accumulation and land management implications","authors":"C. Roberto Pinheiro Junior ,&nbsp;Tiago Osório Ferreira ,&nbsp;José de Souza Oliveira Filho ,&nbsp;Hermano Melo Queiroz ,&nbsp;Lucas Pecci Canisares ,&nbsp;Lucas T. Greschuk ,&nbsp;Carlos Eduardo Pellegrino Cerri ,&nbsp;Marcos Gervasio Pereira ,&nbsp;Gonçalo Amarante Guimarães Pereira ,&nbsp;Maurício Roberto Cherubin","doi":"10.1016/j.geodrs.2024.e00849","DOIUrl":"10.1016/j.geodrs.2024.e00849","url":null,"abstract":"<div><p>Shallow soils (i.e., Lithic Entisols) cover about 20% of Brazilian drylands. Inherent soil characteristics (i.e., shallow depths) and water scarcity restrict plant growth and carbon (C) inputs in these soils. In such a sensitive ecosystem, sustainable land management options are key to promoting socio-economic development and ensuring food security. Here, we use a dataset of 50 Lithic Entisol profiles distributed within the Brazilian drylands (northeastern region) to: (i) investigate the effects of land-use (cropland, grassland, and native forest), climate (semi-arid and dry sub-humid), and slope classes (0–3%, 3–8%, 8–20% and 20–45%) on soil C accumulation; and (ii) evaluate how understanding multiple drivers C accumulation can support the identification of sustainable land management options. The results suggested that land use does not affect C stock and C/N ratio, nevertheless, they were affected by climate. Under dry sub-humid climate conditions, C stocks were 41.7 Mg ha⁻¹, 44% higher than under semi-arid climate (28.9 Mg ha⁻¹), a result that reflects the effect of higher biomass production in wetter environments. Under slopes of 20–45%, C stocks were 54.3 Mg ha⁻¹, 172% higher than under slopes of 0–3% (19.9 Mg ha⁻¹), because of the higher altitudes and wetter conditions under steeper slopes. Our results showed that areas under lower slopes have lower C stocks and lower aridity index. These drier conditions reduce the productive potential of annual crops and grasslands but enable the cultivation of high-yielding Crassulacean Acid Metabolism (CAM) crops, such as <em>Agave spp</em>, which have a high potential for biofuel production. Furthermore, the possibility of reintroducing organic residues from ethanol production can promote an increase in C stocks, contributing to climate change mitigation. Ultimately, our study provides insights from a holistic view of SOC accumulation drivers, supporting land use planning of highly sensitive environments in tropical drylands around the world.</p></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"38 ","pages":"Article e00849"},"PeriodicalIF":3.1,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141985593","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":"Effects of woodchip biochar on temperature sensitivity of greenhouse gas emissions in amended soils within a mountain vineyard","authors":"Irene Criscuoli ,&nbsp;Pietro Panzacchi ,&nbsp;Roberto Tognetti ,&nbsp;Marta Petrillo ,&nbsp;Damiano Zanotelli ,&nbsp;Carlo Andreotti ,&nbsp;Maximilian Loesch ,&nbsp;Barbara Raifer ,&nbsp;Giustino Tonon ,&nbsp;Maurizio Ventura","doi":"10.1016/j.geodrs.2024.e00847","DOIUrl":"10.1016/j.geodrs.2024.e00847","url":null,"abstract":"<div><p>The utilization of biochar as a soil amendment holds promise for long-term carbon sequestration due to its elevated carbon content and persistent chemical structure. This characteristic has positioned biochar as a proposed nature-based solution for climate change mitigation. Nevertheless, the impact of biochar on soil greenhouse gas (GHG) emissions remains a subject of ongoing debate. In the present investigation, we evaluated the influence of conifer wood biochar on the fluxes of three GHGs, namely carbon dioxide (CO₂), nitrous oxide (N₂O), and methane (CH₄), in a vineyard soil subjected to biochar-alone treatments (at rates of 25 and 50 t ha⁻¹) and in combination with green waste compost (at a rate of 45 t ha⁻¹). The experimental field was situated in northern Italy and was organized in a randomized block design. Soil GHG fluxes were monitored for two and a half years. Monthly flux measurements were conducted using a high-resolution multi-gas analyzer for 24 hours. Fluxes were, therefore, correlated with soil temperature to assess the influence of treatments on the sensitivity of GHG emissions to this pivotal environmental parameter. The findings demonstrated diminished temperature sensitivity in the initial experimental year across all GHG fluxes in soils amended with biochar and biochar-compost combination, in contrast to treatments lacking biochar (i.e., control and compost-alone treatments). Notably, the attenuation was most pronounced for N₂O emissions, suggesting a potential role of biochar in mitigating the release of this gas. However, this effect did not persist in the second and third years of the experiment. Overall, biochar significantly contributed to a reduction in N₂O fluxes and an increase in CO₂ fluxes, but the effect was limited and temporary. Furthermore, biochar had no impact on CH₄ fluxes. The discerned fluctuation in the impact of biochar over time can be attributed to the processes of biochar aging and/or the interannual variability in soil moisture.</p></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"38 ","pages":"Article e00847"},"PeriodicalIF":3.1,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352009424000944/pdfft?md5=0fce514a5aff24feae1b9fe2ed84525a&pid=1-s2.0-S2352009424000944-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141937635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatio-temporal dynamics of land use patterns on soil health in the Central Black Sea Region","authors":"İnci Demirağ Turan ,&nbsp;Orhan Dengiz","doi":"10.1016/j.geodrs.2024.e00846","DOIUrl":"10.1016/j.geodrs.2024.e00846","url":null,"abstract":"<div><p>The current investigation examines the effects of LULC variation on soil erosion and soil organic carbon at the basin of Çorum Stream of Çorum city in the Central Black Sea Region characterized by semi-humid environmental conditions, for the years 1990, 2001, 2010 and 2021. The research employed a GIS application based on Revised Universal Soil Loss Equation (RUSLE) modeling approach, geostatistics, and remote sensing techniques. The findings revealed significant relative changes in LULC types over the study period, relatively 41.1% increase in artificial area. Spatial changes were minimal in agricultural areas and pasturelands. Despite the slight changes observed in soil erosion rates classified by RUSLE, with areas mainly falling into the Very Low–Low erosion rate categories (20.0 ton ha⁻¹ year⁻¹), it is recommended to expand soil conservation practices, particularly in agricultural and pasture areas, to make sure the long-period sustainability of the production system. In addition, When examining the distribution of SOC stocks in the study area according to both LULC and rates of soil erosion, it was found that forested areas exhibited the highest distribution of both low and very low SOC rates as well as very high and high SOC rates, while agricultural and artificial areas showed the lowest distribution.</p></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"38 ","pages":"Article e00846"},"PeriodicalIF":3.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141964290","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":"Spatial distribution of soil rare earth elements in Sicily (Italy)","authors":"Filippo Saiano ,&nbsp;Gabriele Buttafuoco ,&nbsp;Maria Fantappié ,&nbsp;Simone Priori ,&nbsp;Edoardo A.C. Costantini ,&nbsp;Riccardo Scalenghe","doi":"10.1016/j.geodrs.2024.e00845","DOIUrl":"10.1016/j.geodrs.2024.e00845","url":null,"abstract":"<div><p>Rare earth elements (REEs) are becoming increasingly interesting as indicators of soil processes, and modelling their spatial distribution has become a fundamental requirement for this purpose. This study aims to model and quantify the spatial distribution of soil REEs taking into account their compositional nature in their mapping, and to assess the associated spatial uncertainty. In particular, the cerium anomaly (Ce^⁎) and the ratio of the sum (Σ) of light to heavy REEs (ΣLREEs/ΣHREEs) were calculated and analysed. The study was carried out in Sicily (Italy), one of the largest (25,832 km²) and most populous island in the Mediterranean Sea. Soil REE data were obtained from the soil database of Sicily region. Soil REEs were transformed into a vector of isometric log-ratio (ilr) coordinates and analysed using a geostatistical approach for predicting their values at unsampled locations and generating 100 REEs realizations using turning bands simulation. Each REE element and Ce^⁎ were mapped as well as the ΣLREEs/ΣHREEs ratio. The joint variability of the investigated REEs and the ΣLREEs/ΣHREEs ratio provided insights into their abundance and distribution patterns. From the simulated realizations, standard deviation maps were calculated for the Ce^⁎ and the ΣLREEs/ΣHREEs ratio, providing a measure of their spatial uncertainty. Although with some limitations, the study established a first baseline of the Ce^⁎ and the ΣLREEs/ΣHREEs ratio. The maps of spatial uncertainty may be a useful tool for planning future soil sampling and optimise the choice of new sampling locations.</p></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"38 ","pages":"Article e00845"},"PeriodicalIF":3.1,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352009424000920/pdfft?md5=40c60ba9343d892a56a65480f63bb176&pid=1-s2.0-S2352009424000920-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141952302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Challenges in viticulture practices in a changing environment: Can green waste amendment benefit soil properties of vineyards in the Mediterranean?","authors":"Flor Regus ,&nbsp;Isabelle Laffont-Schwob ,&nbsp;Pascale Prudent ,&nbsp;Lisa Foli ,&nbsp;Yvan Capowiez ,&nbsp;Julianne Capelle ,&nbsp;Rayhane Hamrouni ,&nbsp;Nathalie Dupuy ,&nbsp;Hélène Folzer ,&nbsp;Anne Marie Farnet Da Silva","doi":"10.1016/j.geodrs.2024.e00844","DOIUrl":"10.1016/j.geodrs.2024.e00844","url":null,"abstract":"<div><p>In Southeastern France, viticulture is of great social, cultural, and economic importance. This sector is threatened by climate change particularly in the Mediterranean (longer droughts and more frequent heat waves) where soils are poor in organic matter and weakly developed. Since organic amendment can strongly modify soil properties and consequently the final products (grapes and wine), the effects of sustainable practices on soil characteristics have to be carefully assessed. This seasonal field survey focuses on the effects green waste amendment (GWA), i.e. semi-composted green wastes, have on vineyard soil functionality. The effects of GWA were compared with those of grass cover (GC), known as a sustainable practice. Soils were collected in vineyards under organic practices (Bouches-du-Rhône and Var, France) over four seasons and physico-chemical (Total C and N, pH_water, pH_KCL, EC, WHC, copper content and soil organic carbon SOC) and biological (microbial respiration and biomass, microbial catabolic structure, earthworm abundance and biomass) properties were characterized. Both practices were beneficial to soil physicochemical properties. For example, under both practices, higher (2 fold) Total N and SOC on late spring were observed. Both GWA and GC favored soil microbial communities, with microbial respiration having doubled and tripled on late spring. Similar results were observed for microbial biomass and both bacterial and fungal catabolic diversities (increased approximately by half) over summer. These benefits were particularly prominent during drought season (June and August), and probably linked to a shift in microbial communities as revealed by catabolic profiles. GWA also favored abundance and biomass of earthworm during winter. These findings reveal the potential GWA to counteract the effect of tillage, to mitigate the stress from drought and to improve overall soil functionality in vineyards.</p></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"38 ","pages":"Article e00844"},"PeriodicalIF":3.1,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040715","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":"Carbon dynamics in an alluvial fan in the eastern Canadian Arctic","authors":"Anne Ola ,&nbsp;Samuel Gagnon ,&nbsp;Daniel Fortier ,&nbsp;Jérôme Comte ,&nbsp;Florent Domine","doi":"10.1016/j.geodrs.2024.e00841","DOIUrl":"10.1016/j.geodrs.2024.e00841","url":null,"abstract":"<div><p>Alluvial fans are common features of mountainous landscapes in circumpolar regions and are characterized by a suit of hillslope processes that drive sediment distribution. At present there is little known about the biogeochemistry of these systems. Thus, this study aimed to understand alluvial fan soil carbon (C) dynamics. Surface and permafrost soil was retrieved in the apex, mid-section, and foot of a fan on Bylot Island in the Canadian Arctic. Soil characteristics such as grain size distribution, ice content and major ions, electric conductivity, as well as total C and nitrogen (N) contents were determined. Moreover, soil organic carbon (SOC) pools were assessed using density fractionation in combination with acid hydrolysis. Despite the strong influence of hillslope processes on physical sediment characteristics, hillslope location had no effect on SOC and N stocks. However, fractionation analysis showed that hillslope processes facilitate the degradation of soil C prior to its burial and integration into permafrost soil, where over 90% of the SOC pool associated with the mineral-fraction is resistant to degradation. Hence, SOC pools at the foot of alluvial fans may be considered relatively stable.</p></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"38 ","pages":"Article e00841"},"PeriodicalIF":3.1,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352009424000889/pdfft?md5=d191a68cde7cf3fe2555085593a2d341&pid=1-s2.0-S2352009424000889-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141846931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geochemistry and microbiology of boreal alluvial soil under salinisation","authors":"E.A. Khayrulina ,&nbsp;N.V. Mitrakova ,&nbsp;A.Yu. Maksimov ,&nbsp;P.Yu. Maltseva ,&nbsp;A.A. Bogush","doi":"10.1016/j.geodrs.2024.e00842","DOIUrl":"10.1016/j.geodrs.2024.e00842","url":null,"abstract":"<div><p>Soil salinisation in taiga landscapes is in most cases caused by anthropogenic activities. The study was carried out in Perm region (Russia) on the territory of the Verkhnekamskoe Potash Deposit. The inflow of sodium chloride drainage water into ground and surface waters during the production of potash fertilisers contributed to the technogenic salinisation of river valleys in the taiga zone. The purpose of the research was to investigate the microbial composition and chemical properties of alluvial soils in the area affected by Na<img>Cl waters in the Lyonva River valley. The chemical properties of soils were determined standard methods such as potentiometric method, titration, and spectrophotometry. The microbial community was determined by 16 s rRNA gene metagenomic analysis. The soil's mineralogical composition was determined using a binocular microscope and diffractometer for XRD. The morphology and microstructure of the samples has been studied using an analytical scanning electron microscope. In Solonchaks, an interdependence of salinity and bacterial species composition was discovered, along with the bacteria's geochemical processes. The topsoil contains a considerable amount of toxic salts, ranging from 5.9 to 17%. The ratio of exchangeable cations in the soil absorption complex changes when exchangeable calcium is replaced by sodium. Salinisation caused the neutralisation of acidic alluvial soils. Bacteria originating from marine and highly mineralised environments predominate in the soil. The soils are dominated by bacteria originating from marine and highly mineralised environments, such as <em>Proteobacteria, Shewanella</em> (75–79%), <em>Thiomicrospira</em> (26%), <em>Desulfuromonas, Marinomonas</em> and <em>Idiomarina</em> (9–10%), <em>Alicyclobacillus</em> (4%). The correlation revealed the connection of some taxa with ions of aqueous extract, as well as with exchangeable sodium, mobile iron and total sulphur. Some bacteria promote azonal geochemical processes within alluvial forest soil, such as the reduction of iron and manganese, the production of sulphides, and the oxidation of sulphur, hydrogen, and iron. Sulphide accumulation resulting in the formation of a hydrotroilite horizon (FeS × nH2O) and iron-bearing formations were found on the soil surface. Studying the properties and degree of soil disturbance makes it possible to identify the contribution of enterprises to environmental pollution, as well as to apply new methods for monitoring, purifying, and storing potassium waste.</p></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"38 ","pages":"Article e00842"},"PeriodicalIF":3.1,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141851309","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":"Origin and evolution of soil materials of the Paleo-Chadian linear-dune landscape in the Far North Region of Cameroon","authors":"R.K. Enang ,&nbsp;F. Mees ,&nbsp;B.P.K. Yerima ,&nbsp;G.K. Kome ,&nbsp;E. Van Ranst","doi":"10.1016/j.geodrs.2024.e00843","DOIUrl":"10.1016/j.geodrs.2024.e00843","url":null,"abstract":"<div><p>The mineralogy and micromorphology of associated red Arenosols and both yellow and grey Gleysols of the Paleo-Chadian linear-dune landscape of the Far North Region of Cameroon were studied in order to obtain information about depositional environments and pedogenic processes. Differences between the red soils and both others include a significant difference in clay content, which is much higher in the grey and yellow soils. The composition of the clay fraction is also different, with kaolinite and illite as main mineral phases in the red soils, whereas smectite is strongly predominant in the grey soils and a major phase in the yellow soils. Mössbauer spectroscopy analysis reveals a predominance of hematite as iron oxide mineral in the red soils, in contrast to goethite-predominance in the yellow soils. Thin section observations reveal poor sorting of the coarse fraction, differences in feldspar content, and an absence of reworked clay aggregates, as well as the presence of pore-related carbonate features in the grey soils and iron oxide nodules in the grey and yellow soils. The obtained results indicate that the red soils are derived from a different parent material than the other soils. The grey soils developed on flood-related fluvial deposits in interdune depressions, whereas the red soils formed on aeolian sands and the yellow soils show a mixed origin. In the interdune depressions, hydromorphic conditions led to iron reduction and pedogenic carbonate enrichment.</p></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"38 ","pages":"Article e00843"},"PeriodicalIF":3.1,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141853640","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 carbon and bio-physicochemical properties dynamics under forest restoration sites in southern Ghana","authors":"Hugh C. Adokwei Brown ,&nbsp;Mark Appiah ,&nbsp;Gabriel W. Quansah ,&nbsp;Eric Owusu Adjei ,&nbsp;Frank Berninger","doi":"10.1016/j.geodrs.2024.e00838","DOIUrl":"10.1016/j.geodrs.2024.e00838","url":null,"abstract":"<div><p>Forest degradation and conversion to agriculture and other land uses usually leads to a reduction in soil carbon stocks and negatively impacts key soil bio-physicochemical properties. The recovery of these soil properties following reforestation has been unclear and/or has not been well studied in the tropics. We analysed the soil carbon stocks and soil physicochemical characteristics of 48 sample plots across 11 sites in 42–47 year-old tropical hardwood plantations and secondary forests of similar ages, and primary reference forests. In addition, we assessed soil microbial biomass and litter decomposition. The study was conducted in the moist and wet climatic zones of Ghana.</p><p>Climate was the main determinant of soil characteristics, while the effect of forest type was minor. After 40 years of restoration, the soil carbon stocks and key soil physicochemical properties in plantations and secondary forests reached similar levels to those in the primary forests within the respective climatic zones. We observed that forests in the wet zone had higher soil carbon stocks and higher above ground biomass with much lower soil pH. Soil carbon stocks (0–50 cm) ranged from 51.16 Mg ha⁻¹ to 122.84 Mg ha⁻¹, with the mean values for the moist and wet zones being 56.9 Mg ha⁻¹ and 106.8 Mg ha⁻¹respectively.</p><p>There were no differences in soil microbial biomass between the forest types within zones, however, it was notably much higher in the moist compared to the wet zone. The decomposition of two types of tea (green and rooibos) with contrasting decomposability was analysed using a two-component exponential decomposition model. The results indicated that the decomposition of recalcitrant material in the tea bags was slower in the wet climatic zone. Further analysis showed that soil organic carbon content was inversely related to the recalcitrant organic matter's decomposition rate. In addition, there was a positive relation between the soil carbon stocks and above-ground biomass. Our results indicate that soil biophysico-chemical properties and carbon stocks were restored in plantations and secondary forests after 40 years of restoration. However, a number of our restoration sites were cleared and farmed for a relatively short period (≈ 3–4 years) but are representive of many recently deforested areas in the tropics.</p></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"38 ","pages":"Article e00838"},"PeriodicalIF":3.1,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141848043","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":"No-tillage with straw retention influenced maize root growth morphology by changing soil physical properties and aggregate structure in Northeast China: A ten-year field experiment","authors":"Yang Wang ,&nbsp;Laidi Zou ,&nbsp;Chenchen Lou ,&nbsp;Xuedong Geng ,&nbsp;Shixiu Zhang ,&nbsp;Xuewen Chen ,&nbsp;Yan Zhang ,&nbsp;Dandan Huang ,&nbsp;Aizhen Liang","doi":"10.1016/j.geodrs.2024.e00840","DOIUrl":"10.1016/j.geodrs.2024.e00840","url":null,"abstract":"<div><p>Conservation tillage, particularly the implementation of no-tillage and straw retention (NTS), has been proposed as an effective practice to enhance soil structure and improve soil quality in Northeast China. However, the impact of NTS on maize (<em>Zea mays</em> L.) root growth morphology and the influence of tillage practices on maize root morphology through soil physical properties and structure in Northeast China remain understudied. To address this knowledge gap, a continuous ten-year experiment was conducted to assess the effects of NTS on soil physical properties, aggregate structure, maize root morphology, and their interconnections. Our findings demonstrate that the NTS treatment significantly increased soil water content and soil bulk density at depths of 0–5 cm (1.6%) and 5–10 cm (2.2%), while decreasing soil porosity at depths of 0–5 cm (1.4%) and 5–10 cm (2.0%) compared to conventional tillage (CT). Additionally, NTS resulted in a higher content of soil macro-aggregates (&gt; 0.25 mm) and improved soil aggregate stability compared to CT. Notably, root length, root surface area, root volume, and root biomass in the NTS treatment were 6.04%, 22.15%, 10.04%, and 9.29% higher than those in CT, respectively. However, there was no significant difference in root diameter between the two tillage practices. These results reveal that NTS induces alterations in soil physical properties, aggregate size distribution and aggregate stability, thereby affecting maize root growth morphology.</p></div>","PeriodicalId":56001,"journal":{"name":"Geoderma Regional","volume":"38 ","pages":"Article e00840"},"PeriodicalIF":3.1,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785291","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}