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Restoration of soil health by Amazonian secondary forests is severely eroded by slash-and-burn recurrence
IF 5.4 1区 农林科学
Catena Pub Date : 2025-03-12 DOI: 10.1016/j.catena.2025.108925
Wanderlei Bieluczyk , Marina Pires Duarte , Plínio Barbosa de Camargo , Norberto Cornejo Noronha , Marisa de Cássia Piccolo , Siu Mui Tsai
{"title":"Restoration of soil health by Amazonian secondary forests is severely eroded by slash-and-burn recurrence","authors":"Wanderlei Bieluczyk ,&nbsp;Marina Pires Duarte ,&nbsp;Plínio Barbosa de Camargo ,&nbsp;Norberto Cornejo Noronha ,&nbsp;Marisa de Cássia Piccolo ,&nbsp;Siu Mui Tsai","doi":"10.1016/j.catena.2025.108925","DOIUrl":"10.1016/j.catena.2025.108925","url":null,"abstract":"<div><div>Secondary forest regeneration is a promising path to restore soil health in the Amazon, but slash-and-burn for agricultural reconversion may reverse decades of the soil’s multifunctional progress. This study examined (i) how secondary forests rehabilitate soil multifunctionality after long-term agriculture in the eastern Amazon and (ii) the extent of soil functional loss if the forest is re-burned after two decades of ecological restoration. We investigated contiguous secondary forests at 2, 5, and 20 years, including post-slash-and-burn of the 20-year-old forest, all on soils with over 85 % sand on a small farm practicing shifting agriculture. We structured a soil health assessment using thirteen physical, chemical, and biological soil indicators, and calculated index scores based on soil functions. Secondary forests improved soil aggregation, cation exchange capacity, and nitrogen and carbon levels, enhancing soil’s physical, chemical, and biological functions and increasing soil multifunctionality by 13 % over 18 years. While slash-and-burn increased available P and exchangeable Ca, Mg, and K, nutrient levels remained poor for cassava cultivation on the farm. Furthermore, nitrogen, cation exchange capacity, carbon, macrofauna indexes, and aggregate stability dropped to levels comparable to<!--> <!-->or lower than the 2-year-old forest, reducing the<!--> <!-->soil health score by 11 %. We conclude that secondary forests effectively restore soil multifunctionality in the eastern Amazon, but a single slash-and-burn recurrence reverses two decades of soil health recovery. We advocate educational and socioeconomic support for small farmers reliant on slash-and-burn, promoting sustainable agroforestry and compensating those who perpetuate secondary forests, given their soil health benefits demonstrated in this study.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"254 ","pages":"Article 108925"},"PeriodicalIF":5.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611071","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}
引用次数: 0
Glaciers retreat-induced gravelization encroached alpine hillside grassland: A case study in Qilian Mountain, China
IF 5.4 1区 农林科学
Catena Pub Date : 2025-03-11 DOI: 10.1016/j.catena.2025.108905
Tong Li , Jingxue Zhao , Gao-Lin Wu
{"title":"Glaciers retreat-induced gravelization encroached alpine hillside grassland: A case study in Qilian Mountain, China","authors":"Tong Li ,&nbsp;Jingxue Zhao ,&nbsp;Gao-Lin Wu","doi":"10.1016/j.catena.2025.108905","DOIUrl":"10.1016/j.catena.2025.108905","url":null,"abstract":"<div><div>The current global warming is accelerating deglaciation in polar regions, directly or indirectly threatening terrestrial environment and conservation. During deglaciation, a climate warming-induced secondary disaster − gravelization encroachment in alpine hillside grassland appears as a threat of alpine grassland ecosystem, however, this phenomenon remains largely overlook. Here, we mapped in detail gravelization in alpine hillside grassland by a representative glacier as a case study, and aggregated all available surface reflectance Landsat 5 TM and Landsat 8 OLI_TIRS images covering study area between 1987 and 2019 based on Google Earth Engine. Annual cell-specific Normalized Difference Vegetation Index (NDVI) values were calculated for the Maximum Value Composites, and cell-by-cell non-parametric Sen’s slopes were computed. The high resolution (0.5 m) remote sensing images taken in 2008 and 2019 were interpreted to validate Sen’s slopes analysis of NDVI. We found that glaciers retreated as average annual temperature increased from the period between 1987 and 2019, with a total melting area ratio of 65.02 %. More importantly, after glacier retreat, the gravel debris fragments accelerated sliding, covering and reducing the alpine grassland area. NDVI value at the grassland − gravel debris interface showed a decreasing trend, especially after 2000. Gravel debris expansion caused the loss of 12.98 ha of alpine grassland between 2008 and 2019. Overall, as a consequence of the current climate change, the gravel debris covered area replaced the glacier and grassland gradually, giving rise to this emerging surficial process. Gravelization encroachment in alpine hillside grassland has profound implications for alpine grassland ecosystem that should be paid more attention in future studies.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"254 ","pages":"Article 108905"},"PeriodicalIF":5.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143591713","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}
引用次数: 0
Significance of Planet SuperDove and refined Sentinel-2 imagery fusion for enhanced soil organic carbon prediction in croplands
IF 5.4 1区 农林科学
Catena Pub Date : 2025-03-11 DOI: 10.1016/j.catena.2025.108902
James Kobina Mensah Biney , Jakub Houška , Olha Kachalova , Jiří Volánek , Prince Chapman Agyeman , David Kwesi Abebrese , Ehsan Chatraei Azizabadi , Nasem Badreldin
{"title":"Significance of Planet SuperDove and refined Sentinel-2 imagery fusion for enhanced soil organic carbon prediction in croplands","authors":"James Kobina Mensah Biney ,&nbsp;Jakub Houška ,&nbsp;Olha Kachalova ,&nbsp;Jiří Volánek ,&nbsp;Prince Chapman Agyeman ,&nbsp;David Kwesi Abebrese ,&nbsp;Ehsan Chatraei Azizabadi ,&nbsp;Nasem Badreldin","doi":"10.1016/j.catena.2025.108902","DOIUrl":"10.1016/j.catena.2025.108902","url":null,"abstract":"<div><div>When RS images from multisource specifically at high spatial and spectral resolution, are integrated, the generated imagery is believed to provide higher spatial, spectral, and temporal resolutions. Though image fusion techniques have been employed in many other fields, their applicability in soil science for the estimation of soil properties, including soil organic carbon (SOC), remains limited, especially where digital soil mapping (DSM) models using machine learning algorithms (MLA) are employed. This study explores the viability of enhancing the spectral capability of high spatial resolution imagery acquired from the PlanetScope SuperDove (PSD), which has low spectral capability, by integrating it with high spectral resolution imagery from the Sentinel-2 (S2B) satellite through an image fusion technique. The main aim is to use the fused data and topographic features from the STRM DEM to assess the predictive performance of SOC across large, diverse, and erodible cropland. Prediction models were established using the data sets separately, fused, and with or without the STRM data. Two MLAs were used, including regularised random forest (RRF) and Gaussian process regression (GPR). Correlation and homogeneity tests were conducted between the S2B bands and measured SOC values before their incorporation to obtain refined S2B data for the raster fusion approach. The results show that the optimal SOC content prediction comprised the incorporation of STRM data to the fused data, as input, using the GPR model, where the lowest RMSE of 3.3 gkg-1, the highest coefficient of determination (R<sup>2</sup>) of 0.83, and the MAE of 3.6 gkg-1 were obtained. In terms of SOC spatial distribution map, the fused datasets supplemented by STRM data employing the GPR model performed better than the other alternatives. In summary, this study highlights the promising potential of image fusion of high spatial and spectral RS images to improve the estimation model of SOC, which has the potential to be widely implemented in erodible cropland area.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"254 ","pages":"Article 108902"},"PeriodicalIF":5.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143591714","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}
引用次数: 0
Response of soil organic carbon loss to runoff hydrodynamic parameters under vegetation and terracing measures on the Loess Plateau
IF 5.4 1区 农林科学
Catena Pub Date : 2025-03-11 DOI: 10.1016/j.catena.2025.108885
Zhun Zhao , Peng Shi , Hongbo Niu , Lulu Bai , Manhong Cao , Pengju Zu , Zhanbin Li
{"title":"Response of soil organic carbon loss to runoff hydrodynamic parameters under vegetation and terracing measures on the Loess Plateau","authors":"Zhun Zhao ,&nbsp;Peng Shi ,&nbsp;Hongbo Niu ,&nbsp;Lulu Bai ,&nbsp;Manhong Cao ,&nbsp;Pengju Zu ,&nbsp;Zhanbin Li","doi":"10.1016/j.catena.2025.108885","DOIUrl":"10.1016/j.catena.2025.108885","url":null,"abstract":"<div><div>Soil organic carbon (SOC) pools are significantly influenced by soil erosion, which governs the redistribution of SOC. On the Loess Plateau, land surface alterations induced by the Grain for Green Program have modulated slope runoff hydrodynamics, consequently affecting SOC loss. This study investigates the impact of runoff hydrodynamic parameters on SOC loss by evaluating two widely implemented soil and water conservation measures in the region: vegetation cover and terrace construction. Rainfall simulation experiments were conducted on seven different slope treatments: bare slope, up-slope vegetation, mid-slope vegetation, down-slope vegetation, mid-slope terraces, up-slope vegetation combined with mid-slope terraces, and down-slope vegetation combined with mid-slope terraces. Simulated rainfall at an intensity of 90 mm/h was applied using a physical model of the slope-gully system. Results indicated that slope treatments significantly modified runoff hydrodynamic parameters. Compared with the bare slope, all other treatments effectively reduced runoff hydrodynamic parameters, with the most pronounced effect observed in down-slope vegetation combined with mid-slope terraces. Additionally, down-slope vegetation combined with mid-slope terraces reduced SOC loss by 29.39 %, surpassing the reduction achieved by other measures. Furthermore, unit runoff energy consumption exhibited the strongest correlation with SOC loss across all treatments, following the functional relationship <em>y = ax<sup>b</sup></em>, where ’b’ represents the SOC loss coefficient. Overall, slope management measures altered runoff hydrodynamic parameters characteristics, thereby influencing SOC loss. These findings provide a crucial basis for refining predictive models of SOC loss based on runoff hydrodynamic parameters.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"254 ","pages":"Article 108885"},"PeriodicalIF":5.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143591712","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}
引用次数: 0
Pedogenesis and paleoenvironmental reconstruction in northern Iran: The loess-paleosol sequence at Baluchabad
IF 5.4 1区 农林科学
Catena Pub Date : 2025-03-09 DOI: 10.1016/j.catena.2025.108835
Zaniar Amiri , Farhad Khormali , Martin Kehl , Manfred Frechen , Christian Zeeden
{"title":"Pedogenesis and paleoenvironmental reconstruction in northern Iran: The loess-paleosol sequence at Baluchabad","authors":"Zaniar Amiri ,&nbsp;Farhad Khormali ,&nbsp;Martin Kehl ,&nbsp;Manfred Frechen ,&nbsp;Christian Zeeden","doi":"10.1016/j.catena.2025.108835","DOIUrl":"10.1016/j.catena.2025.108835","url":null,"abstract":"<div><div>Loess-paleosol sequences (LPS) in Iran hold exceptional potential to understand past climate dynamics beyond the instrumental record. This is due to their unique record of environmental change both for local and global scales, and their location at the interface of the European and Asian loess regions. This study presents the first lithological/paleopedological description of the Baluchabad LPS, providing a spatial link between loess deposits of the so-called Iranian Loess Plateau and those of the northern foothills of the Alborz Mountains. We focus on the evolution of the Baluchabad LPS, which comprises twelve distinct paleosols. Each paleosol exhibits characteristics specific for the environmental conditions prevailing during its formation. To elucidate the processes governing dust accumulation, soil formation, and the associated environmental context, we employed mineralogical and micromorphological analyses. The predominant clay minerals found in the Baluchabad section are smectite, chlorite, illite, and kaolinite. The main change observed in the mineral composition is attributed to smectite, which was inherited from the sediment source and shows elevated contents during soil-forming periods. Additionally, micromorphological features and the Micromorphological Index of Soil Development (MISECA) provide valuable tool for reconstructing paleoprecipitation. Luminescence dating results and pedostratigraphic correlation suggests that the first Bt horizon in pedocomplex 1 correlates with Marine Isotope Stage (MIS) 5. Consequently, the second and third pedocomplexes may be associated with MIS 7 and MIS 9.</div><div>The Baluchabad LPS represents a detailed record of diachronic change in climate-related soil development degree and holds strong potential to further decipher loess formation and environmental change during the Middle and Late Pleistocene at the southern margin of the Eurasian loess belt.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"253 ","pages":"Article 108835"},"PeriodicalIF":5.4,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578544","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}
引用次数: 0
Multi-scenario simulations for quantitative assessment of debris flow chain hazards in southwestern China
IF 5.4 1区 农林科学
Catena Pub Date : 2025-03-09 DOI: 10.1016/j.catena.2025.108900
Ming Chang , Xiangyang Dou , Chaopeng Luo , Yongchao Su
{"title":"Multi-scenario simulations for quantitative assessment of debris flow chain hazards in southwestern China","authors":"Ming Chang ,&nbsp;Xiangyang Dou ,&nbsp;Chaopeng Luo ,&nbsp;Yongchao Su","doi":"10.1016/j.catena.2025.108900","DOIUrl":"10.1016/j.catena.2025.108900","url":null,"abstract":"<div><div>Following the catastrophic Wenchuan earthquake in 2008, debris flows have repeatedly obstructed rivers across China’s southwestern mountainous regions, triggering numerous flood disasters and subsequent cascading effects. Ethnic minority villages in these areas are predominantly situated within alpine canyon zones highly susceptible to seismic activity, rendering them exceptionally vulnerable to flood disaster chains initiated by debris flows. This study focuses on Luobajie Gully in the southwest mountainous region as a case study to elucidate the chain hazard responses associated with debris flows and to highlight the critical importance of such research. Comprehensive field investigations provided essential data—including sediment depth, flow density, and velocity—for numerical simulations aimed at assessing potential hazards. Simulation results demonstrate that only debris flows triggered by a 100-year rainstorm event cause channel blockages in Luobajie Gully, leading to significant rises in river water levels due to dammed floodwaters. The resulting flooding reaches maximum water depths within the inundation zone of the accumulation fan, exerting the most substantial impact on adjacent industrial areas. A quantitative risk assessment of 100-year debris flow events was carried out to evaluate the potential hazards. This study analyzes in detail the movement process and potential hazards of the Luobajie Gully debris flow through detailed remote sensing image analysis, field investigation and numerical simulation, and emphasizes the necessity of taking effective preventive and control measures to reduce the associated risks. Since the Heishui River traverses the Wenchuan earthquake area, there are still several potential debris flow gullies, and potential debris flows may pose a non-negligible threat to the entire earthquake area. The model and theory presented in this paper can be effectively applied to the simulation and early warning of other potential debris flows in the earthquake area under similar circumstances, thus facilitating their wide application in flood risk management.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"253 ","pages":"Article 108900"},"PeriodicalIF":5.4,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578642","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}
引用次数: 0
Rockfall-induced debris flow event in the Pyrenees: The case of Pineta valley of September 2022
IF 5.4 1区 农林科学
Catena Pub Date : 2025-03-09 DOI: 10.1016/j.catena.2025.108876
Juan A. Ballesteros-Cánovas , Ishel Marsal Twose , Alberto Muñoz-Torrero , José Carlos Robredo Sánchez , Tamir Grodek , Ignacio López-Moreno , Miguel Bartolomé , Gerardo Benito
{"title":"Rockfall-induced debris flow event in the Pyrenees: The case of Pineta valley of September 2022","authors":"Juan A. Ballesteros-Cánovas ,&nbsp;Ishel Marsal Twose ,&nbsp;Alberto Muñoz-Torrero ,&nbsp;José Carlos Robredo Sánchez ,&nbsp;Tamir Grodek ,&nbsp;Ignacio López-Moreno ,&nbsp;Miguel Bartolomé ,&nbsp;Gerardo Benito","doi":"10.1016/j.catena.2025.108876","DOIUrl":"10.1016/j.catena.2025.108876","url":null,"abstract":"<div><div>Debris flow activity is expected to shift under global warming scenarios. However, linking changes in the frequency and magnitude of these events to climate change is challenging, especially in supply-limited catchments where sediment availability is a critical factor. Here, we reconstruct past and recent extreme debris flow events in a deglaciated catchment in the Central Pyrenees, where a massive debris flow event occurred in September 2022. By conducting detailed field-based, remote sensing and climate analyses, as well as examining tree-ring records and performing numerical models, we provide insights into the magnitude and triggering mechanism of this recent event and contextualize it within the 20th century. Our findings revealed a significant flow magnitude for the 2022 event (peak discharge ∼ 650 m<sup>3</sup>/s; catchment area ∼ 10 km<sup>2</sup>). This event was linked to an intense, but relatively common rainfall in the Pyrenees (27.4 mm in 20 min). Thus, the debris flow magnitude seems to be enhanced by a rockfall that occurred two months earlier in the upper catchment (June 2022). Interestingly, tree ring records do not show events of similar magnitude in the catchment during the last six decades, but rather during the first half of the last century. The observed contrast in debris flow activity between the first (high activity) and second (low activity) halves of the 20th century, along with the potential role of permafrost thaw in causing a sudden sediment influx in the 2022 event, highlights the complex impact of climate change on debris flows in supply-limited catchments. These findings underscore the need for further research into how climate variability and change influence sediment availability in mountain catchments.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"253 ","pages":"Article 108876"},"PeriodicalIF":5.4,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578639","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}
引用次数: 0
Changeability of rill morphometry during Succedent rainfall events due to soil Microorganisms’ inoculation
IF 5.4 1区 农林科学
Catena Pub Date : 2025-03-09 DOI: 10.1016/j.catena.2025.108883
Atefeh Jafarpoor , Seyed Hamidreza Sadeghi , Mohamad Kazemi , Masumeh Ashgevar Heydari
{"title":"Changeability of rill morphometry during Succedent rainfall events due to soil Microorganisms’ inoculation","authors":"Atefeh Jafarpoor ,&nbsp;Seyed Hamidreza Sadeghi ,&nbsp;Mohamad Kazemi ,&nbsp;Masumeh Ashgevar Heydari","doi":"10.1016/j.catena.2025.108883","DOIUrl":"10.1016/j.catena.2025.108883","url":null,"abstract":"<div><div>Rill erosion can be efficiently inhibited using microorganisms’ inoculation. Accordingly, the present research sought to evaluate the impact of individual and combined inoculations of bacteria and cyanobacteria on rill morphometry during five consecutive rainfall events with an intensity of 50 mm h<sup>−1</sup> and a 30-minute duration. The main morphometric components of rills (i.e., number, length, width, depth, and density), as evidenced by 15,887 measurements, were substantially (p &lt; 0.05) influenced by the study treatments. So that, from the first to the fifth rainfall, the control treatment produced the longest rills, measuring between 4.73 ± 0.88 and 5.41 ± 0.44 m. Likewise, the most extensive length of the rill in the cyanobacteria-treated plots varied from 3.58 ± 1.86 to 5.71 ± 0.05 m from the first to the fifth rainfall event. In contrast, in the plots treated by solo bacteria and cyanobacteria + bacteria, the longest rill was progressively elongated with successive rainfall events from 0.86 ± 0.76 to 1.69 ± 0.22 m and 0.60 ± 0.35 to 1.05 ± 0.46 m, respectively. Furthermore, the rill density in the control plots increased from 1.25 ± 0.09 to 2.30 ± 0.52 (m m<sup>−2</sup>) from the first to the last rainfall, while it was from 0.77 ± 0.30 to 1.66 ± 0.41, 0.16 ± 0.15 to 0.62 ± 0.0.40, and 0.11 ± 0.04 to 0.74 ± 0.44 m m<sup>−2</sup> for the separate and combined treatment of cyanobacteria + bacteria, respectively. The largest width of the rill in the control plots ranged from 11.40 to 12.09 cm during the first to the fifth event. In contrast, the rill widths in the plots treated with cyanobacteria alone, bacteria alone, and cyanobacteria + bacteria were 5.25 to 11.00 cm, 2.03 to 8.75 cm, and 1.36 to 8.89 cm, respectively. Similarly, the deepest rills were formed in the control plots ranged from 8.54 to 10.39 cm, while in the plots treated with cyanobacteria alone, bacteria alone, and cyanobacteria + bacteria, the depths were 4.45 to 9.50 cm, 1.81 to 7.70 cm, and 0.94 to 6.40 cm, respectively.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"253 ","pages":"Article 108883"},"PeriodicalIF":5.4,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578640","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}
引用次数: 0
Unseen threat: The devastating impact of microplastics on soil health in agricultural lands
IF 5.4 1区 农林科学
Catena Pub Date : 2025-03-09 DOI: 10.1016/j.catena.2025.108904
Erdal Sakin , Mehmet Fatih Dilekoğlu , İbrahim Halil Yanardağ
{"title":"Unseen threat: The devastating impact of microplastics on soil health in agricultural lands","authors":"Erdal Sakin ,&nbsp;Mehmet Fatih Dilekoğlu ,&nbsp;İbrahim Halil Yanardağ","doi":"10.1016/j.catena.2025.108904","DOIUrl":"10.1016/j.catena.2025.108904","url":null,"abstract":"<div><div>Microplastic pollution, originating from synthetic polymer materials, is a growing environmental threat with substantial implications for soil health and ecosystem functionality. This study investigates the accumulation and impacts of microplastics from plastic greenhouse covers on agricultural soils. Soil samples were collected from five greenhouses established 10 to 30 years ago, at a depth of 0–30 cm, to evaluate microplastic contamination levels and their impact on soil parameters. Microplastics were extracted using density separation with a saturated NaCl solution, followed by microscopic analysis for quantification. Enzyme activities, including β-glucosidase, β-galactosidase, β-glucoaminidase, urease, dehydrogenase (DHG), and catalase, were measured using spectrophotometric and colorimetric assays. Microplastic concentrations ranged from 47 to 315 particles per 5 g of soil, with a progressive increase in concentration linked to the age of the greenhouses. Results revealed significant alterations in soil pH, which ranged from 7.58 to 8.04, and electrical conductivity (EC), varying between 192 and 616 µS cm<sup>−1</sup>. Organic carbon (0.68–0.59 %) and total nitrogen (0.07–0.03 %) contents decreased in soils with increasing microplastic concentrations, while microbial biomass carbon (Cmic) and nitrogen (Nmic) decreased by 43.75 % and 46.59 %, respectively. Enzyme activities such as β-glucosidase, β-galactosidase, and β-glucosaminidase declined by up to 51.17 %, 30.90 %, and 28.31 %, respectively. Additionally, soil respiration (CO<sub>2</sub>-C emissions) increased by 73.91 % (0.19 to 0.33 mg CO<sub>2</sub>-C kg<sup>−1</sup> soil h<sup>−1</sup>), and the metabolic quotient (qCO<sub>2</sub>) rose by 239.82 % (1.41 to 4.82 mg CO<sub>2</sub>-C g<sup>−1</sup> Cmic h<sup>−1</sup>). Regression analyses demonstrate strong correlations between microplastic concentrations and soil property changes, with a one-unit increase in microplastic concentration leading to significant decreases in enzyme activities (p &lt; 0.05). Additionally, long-term microplastic accumulation altered soil structure, increasing porosity and aggregate instability, which compounded the reduction in enzyme activities. These findings underscore the profound negative effects of microplastic pollution on soil ecosystems, emphasizing the urgent need for sustainable agricultural practices and effective waste management strategies to mitigate microplastic contamination and its detrimental impact on soil health and functionality.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"253 ","pages":"Article 108904"},"PeriodicalIF":5.4,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578641","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}
引用次数: 0
Carbon inventories: New opportunities and challenges for agriculture and forestry
IF 5.4 1区 农林科学
Catena Pub Date : 2025-03-08 DOI: 10.1016/j.catena.2025.108887
Júnior Melo Damian, Carlos Eduardo Pellegrino Cerri, Luís Gustavo Barioni, Maurício Roberto Cherubin, Martial Bernoux, Richard T. Conant, Marcelo Valadares Galdos, Adrian L. Collins
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