Journal of environmental quality最新文献_第5页

The LTAR Cropland Common Experiment at Upper Mississippi River Basin–St. Paul 密西西比河上游流域-圣保罗的 LTAR 耕地共同试验

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-09-10 DOI: 10.1002/jeq2.20615

Brent J. Dalzell, John M. Baker, Rodney T. Venterea, Kurt A. Spokas, Gary W. Feyereisen, Pamela J. Rice, Jonathan R. Alexander

{"title":"The LTAR Cropland Common Experiment at Upper Mississippi River Basin–St. Paul","authors":"Brent J. Dalzell, John M. Baker, Rodney T. Venterea, Kurt A. Spokas, Gary W. Feyereisen, Pamela J. Rice, Jonathan R. Alexander","doi":"10.1002/jeq2.20615","DOIUrl":"10.1002/jeq2.20615","url":null,"abstract":"The Soil and Water Management Research Unit of the USDA-Agricultural Research Service is located in St. Paul, MN, and conducts long-term research at the University of Minnesota Research and Outreach Center located at Rosemount, MN. As part of USDA's Long-Term Agroecosystem Research (LTAR) network, the croplands common experiment (CCE) at this location is focused on integration of a kura clover (Trifolium ambiguum M. Bieb.) living mulch (KCLM) system into the prevailing 2-year rotation of corn (Zea mays L.) and soybean (Glycine max L.) that is typical of the midwestern Corn Belt. The LTAR-CCE conducted at Rosemount, MN, aims to compare the long-term environmental and agronomic performance of KCLM while identifying challenges and developing management strategies for this alternative practice. The use of a living mulch for this region is advantageous because, once established, it does not require additional time for fall field operations typically associated with winter cover crops. Results from LTAR-CCE studies at this site show that KCLM results in a substantial increase in soil field-saturated hydraulic conductivity and decreases in leaching of nitrate-nitrogen (NO3−-N). Disadvantages of the KCLM system include potential for increased emissions of nitrous oxide (N2O) and reduced crop yields, particularly during drought. Also, the optimal approach for crop row establishment in the spring remains uncertain. Ongoing LTAR-CCE research with KCLM aims to better understand and quantify both benefits and risks across conditions of interannual weather variability and changing climate to develop guidance for suitable adoption and management of this alternative practice.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 6","pages":"1008-1016"},"PeriodicalIF":2.2,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20615","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microplastics and nanoplastics in soil: Sources, impacts, and solutions for soil health and environmental sustainability 土壤中的微塑料和纳米塑料：土壤健康和环境可持续性的来源、影响和解决方案。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-09-08 DOI: 10.1002/jeq2.20625

Soumitra Nath, Kingsley Erhons Enerijiofi, Ashim Das Astapati, Anupam Guha

{"title":"Microplastics and nanoplastics in soil: Sources, impacts, and solutions for soil health and environmental sustainability","authors":"Soumitra Nath, Kingsley Erhons Enerijiofi, Ashim Das Astapati, Anupam Guha","doi":"10.1002/jeq2.20625","DOIUrl":"10.1002/jeq2.20625","url":null,"abstract":"The present review discusses the growing concern of microplastics (MPs) and nanoplastics (NPs) in soil, together with their sources, concentration, distribution, and impact on soil microorganisms, human health, and ecosystems. MPs and NPs can enter the soil through various pathways, such as agricultural activities, sewage sludge application, and atmospheric deposition. Once in the soil, they can accumulate in the upper layers and affect soil structure, water retention, and nutrient availability. The presence of MPs and NPs in soil can also have ecological consequences, acting as carriers for pollutants and contaminants, such as heavy metals and persistent organic pollutants. Additionally, the leaching of chemicals and additives from MPs and NPs can pose public health risks through the food web and groundwater contamination. The detection and analyses of MPs and NPs in soil can be challenging, and methods involve spectroscopic and microscopy techniques, such as Fourier-transform infrared spectroscopy and scanning electron microscopy. To mitigate the presence and effects of MPs and NPs in soil, it is essential to reduce plastic waste production, improve waste management practices, and adopt sustainable agricultural practices. Effective mitigation measures include implementing stricter regulations on plastic use, promoting biodegradable alternatives, and enhancing recycling infrastructure. Additionally, soil amendments, such as biochar and compost, can help immobilize MPs and NPs, reducing their mobility and bioavailability. This review article aims to provide a comprehensive understanding of these emerging environmental issues and identify potential solutions to alleviate their impact on soil health, ecosystem functioning, and community health.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 6","pages":"1048-1072"},"PeriodicalIF":2.2,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142154275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatial heterogeneity in sediment phosphorus pools and phosphatase activity in a eutrophic reservoir 富营养化水库中沉积磷库和磷酸酶活性的空间异质性。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-29 DOI: 10.1002/jeq2.20621

Abagael N. Pruitt, Kynser Wahwahsuck, Samantha G. Thomas, Amy J. Burgin

{"title":"Spatial heterogeneity in sediment phosphorus pools and phosphatase activity in a eutrophic reservoir","authors":"Abagael N. Pruitt, Kynser Wahwahsuck, Samantha G. Thomas, Amy J. Burgin","doi":"10.1002/jeq2.20621","DOIUrl":"10.1002/jeq2.20621","url":null,"abstract":"Agriculture is necessary for food production, but agricultural inputs of phosphorus (P) to waterways can lead to harmful algal blooms in downstream reservoirs. Some of the P that enters these water bodies can be stored in reservoir sediments and later contribute to internal P loading, supplementing external P loads carried in from rivers. Increased P can lead to harmful algal blooms. However, how P is cycling in the sediment of these water bodies varies spatially and temporally has been relatively unstudied. Our objective was to understand how P concentration and form vary spatiotemporally, as well as how P is processed in the sediment of the reservoir. We sampled 30 locations in both August and October 2018 around Milford Reservoir (Kansas), a man-made eutrophic reservoir with frequent harmful algal blooms. We collected water chemistry samples, field measurements of temperature, dissolved oxygen, and pH, and sediment samples to analyze for P chemical speciation and phosphatase enzyme activity. We show that P release by phosphatase activity was higher under anaerobic and basic conditions, which subsequently affects spatiotemporal variation in sediment P pools. We found that low oxygen positively influenced phosphatase activity and sediment P pools, and may drive high internal P loading and harmful algal blooms in the summer months. This research increased our understanding of P cycling in a reservoir highly impacted by agricultural inputs and contributed to a small but growing body of research on internal P loading in midwestern reservoirs.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 6","pages":"1140-1151"},"PeriodicalIF":2.2,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142108000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Utilizing biochars to stabilize mercury in contaminated floodplain sediment: Implications on mercury remediation 利用生物炭稳定受污染洪泛区沉积物中的汞：对汞修复的影响

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-20 DOI: 10.1002/jeq2.20616

Brittany E. Jensen, Breann Spencer, Xiaoyu Xu

{"title":"Utilizing biochars to stabilize mercury in contaminated floodplain sediment: Implications on mercury remediation","authors":"Brittany E. Jensen, Breann Spencer, Xiaoyu Xu","doi":"10.1002/jeq2.20616","DOIUrl":"10.1002/jeq2.20616","url":null,"abstract":"Major weather events contribute to the mobility and remobilization of legacy mercury (Hg) contamination and sequestration within sediments. Remediation using biochar as a soil amendment is a useful technique to immobilize and decrease Hg toxicity. This study explored whether biochar application is effective at stabilizing labile mercury (LaHg) from floodplain sediment. Controlled mesocosms simulating contamination events and flooding conditions were conducted. Floodplain sediment, which experiences annual periodic flooding, was collected. Sediment was spiked with inorganic Hg, applied with different types of biochar, and experienced simulated flooding events. Four types of biochar, pure rice husk (RH), pure peanut hull (PH), sulfur-modified rice husk (SMRH), and sulfur-modified peanut hull (SMPH), were applied at 10 and 40 g/kg rates (i.e., RH 10, RH 40; PH 10, PH 40, SMRH 10, SMRH 40, SMPH 10, SMPH 40). Total Hg, methylmercury, and LaHg concentrations were analyzed by coupling with redox potential measurements. Results indicate that SMRH 10, PH 10, PH 40, SMPH 10, and SMPH 40 successfully remediate Hg by stabilizing and reducing LaHg species from floodplain sediment. However, a high Hg methylation potential was observed with unsulfated and sulfated peanut hulls (PH 10, PH 40, SMPH 10, and SMPH 40), as they tend to create a reducing microenvironment that favors sulfate reduction reactions. Additionally, sulfur-modified biochar tends to promote Hg methylation potential at high application rates (i.e., 40 g/kg). We thus recommend using SMRH at a relatively low application rate (SMRH 10) for the remediation of Hg from floodplain sediment.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 5","pages":"684-696"},"PeriodicalIF":2.2,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20616","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142004358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fate and transport of fragmented and spherical microplastics in saturated gravel and quartz sand 饱和砾石和石英砂中碎片和球形微塑料的归宿和迁移。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-20 DOI: 10.1002/jeq2.20618

Ahmad Ameen, Margaret E. Stevenson, Alexander K. T. Kirschner, Stefan Jakwerth, Julia Derx, Alfred P. Blaschke

{"title":"Fate and transport of fragmented and spherical microplastics in saturated gravel and quartz sand","authors":"Ahmad Ameen, Margaret E. Stevenson, Alexander K. T. Kirschner, Stefan Jakwerth, Julia Derx, Alfred P. Blaschke","doi":"10.1002/jeq2.20618","DOIUrl":"10.1002/jeq2.20618","url":null,"abstract":"Microplastics in urban runoff undergo rapid fragmentation and accumulate in the soil, potentially endangering shallow groundwater. To improve the understanding of microplastic transport in groundwater, column experiments were performed to compare the transport behavior of fragmented microplastics (FMPs ∼1-µm diameter) and spherical microplastics (SMPs ∼1-, 10-, and 20-µm diameter) in natural gravel (medium and fine) and quartz sand (coarse and medium). Polystyrene microspheres were physically abraded with glass beads to mimic the rapid fragmentation process. The experiments were conducted at a constant flow rate of 1.50 m day−1 by injecting two pore volumes of SMPs and FMPs. Key findings indicate that SMPs showed higher breakthrough, compared to FMPs in natural gravel, possibly due to size exclusion of the larger SMPs. Interestingly, FMPs exhibited higher breakthrough in quartz sand, likely due to tumbling and their tendency to align with flow paths, while both sizes (larger and smaller relative to FMPs) of SMPs exhibited higher removal in quartz sand. Therefore, an effect due to shape and size was observed.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 5","pages":"727-742"},"PeriodicalIF":2.2,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20618","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142004357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The LTAR Integrated Common Experiment at Upper Mississippi River Basin-Platteville 密西西比河上游流域普拉特维尔 LTAR 综合共同实验。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-13 DOI: 10.1002/jeq2.20620

Dennis L. Busch, Kishan Mahmud, Jane M. F. Johnson, Athanasios Papanicolaou, John M. Baker, Andrew D. Cartmill

{"title":"The LTAR Integrated Common Experiment at Upper Mississippi River Basin-Platteville","authors":"Dennis L. Busch, Kishan Mahmud, Jane M. F. Johnson, Athanasios Papanicolaou, John M. Baker, Andrew D. Cartmill","doi":"10.1002/jeq2.20620","DOIUrl":"10.1002/jeq2.20620","url":null,"abstract":"Alternative agronomic practices are needed to address the various climatic, agronomic, edaphic, and water quality related challenges faced by the dairy farmers of the Driftless Area (DA) in the Upper Mississippi River Basin (UMRB). These practices should be innovative in nature, inclusive of regional stakeholders, and sustainable to meet the future food and climate related challenges of Wisconsin agriculture. Here, we outline our Integrated (grazing and cropland) Long-Term Agroecosystem Research Common Experiment at the University of Wisconsin-Platteville Pioneer Farm (UW-P PF) in the UMRB and describe our collaboration in this USDA network. In this field-scale experiment, we are comparing the conventional dairy production system common to this region (i.e., corn-on-corn [Zea mays L.] for 4 years, followed by alfalfa [Medicago sativa L.] for 3 years, with no cover crops) with two alternative dairy production systems—(1) soil health management with no-till, cover crops, and application of a novel manure-based nutrient-rich stable product, and (2) management intensive grazing—and rotational grazing on pastures established with diverse forage–legume mix. Meteorological, edaphic, hydrologic, and agronomic data are collected and analyzed at regular frequencies. Going forward, the experiment will continue as a form of stakeholder-driven adaptive research and receive evaluation on a regular basis to determine whether any changes are required to address the “real-world” challenges faced by the farmers in the Midwest.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 6","pages":"999-1007"},"PeriodicalIF":2.2,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141971236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The LTAR Grazing Land Common Experiment at the Great Basin 大盆地的 LTAR 牧场共同实验。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-10 DOI: 10.1002/jeq2.20617

Patrick E. Clark, Craig D. Woodruff, Andrew R. Hedrick, Stuart P. Hardegree, Gerald N. Flerchinger

{"title":"The LTAR Grazing Land Common Experiment at the Great Basin","authors":"Patrick E. Clark, Craig D. Woodruff, Andrew R. Hedrick, Stuart P. Hardegree, Gerald N. Flerchinger","doi":"10.1002/jeq2.20617","DOIUrl":"10.1002/jeq2.20617","url":null,"abstract":"The Long-Term Agroecosystem Research (LTAR) network, through its Common Experiment (CE) framework, contrasts prevailing and alternative agricultural practices for efficacy and sustainability within the indicator domains of environment, productivity, economics, and society. Invasive species, wildfire, and climate change are principal threats to Great Basin agroecosystems. Prescribed grazing may be an effective tool for restoring lands degraded by these disturbances. At the Great Basin (GB) LTAR site headquartered in Boise, ID, our contribution to the CE contrasts a prevailing (PRV), cattle grazing practice of fixed moderate stocking and duration with an alternative (ALT), prescribed grazing practice called high-intensity low-frequency (HILF) grazing where stocking and duration are tailored to suppress invasive annual grass competition with native or desirable plant species and thus promote recovery of rangelands degraded by annual grass invasion and recurrent wildfire. Preliminary results indicate cheatgrass density and fuel height have been reduced in ALT-treated paddocks compared to PRV paddocks. Since its inception in 2014, our GB CE has been a research co-production effort among ranchers, public land managers, and researchers. Future directions for this research will center on expanding the experiment to multiple study areas to better address the scope of the annual grass/wildfire problem. We expect this research will lead to effective and sustainable grazing practices for restoring >41 million hectares of degraded rangelands in the Great Basin and other areas of the western United States.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 6","pages":"861-868"},"PeriodicalIF":2.2,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141912898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Removal of nutrients from aquaculture wastewater using cattail (Typha spp.) constructed wetlands 利用香蒲（Typha spp.）建造的湿地去除水产养殖废水中的营养物质。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-10 DOI: 10.1002/jeq2.20608

Nicholas C. Blandford, Kenton McCorquodale-Bauer, Richard Grosshans, Bruce Hardy, Nazim Cicek, Vince Palace

{"title":"Removal of nutrients from aquaculture wastewater using cattail (Typha spp.) constructed wetlands","authors":"Nicholas C. Blandford, Kenton McCorquodale-Bauer, Richard Grosshans, Bruce Hardy, Nazim Cicek, Vince Palace","doi":"10.1002/jeq2.20608","DOIUrl":"10.1002/jeq2.20608","url":null,"abstract":"The aquaculture industry is among the fastest growing food production sectors in the world. Land-based aquaculture systems continue to increase in popularity as they offer the benefits of controlling diseases, managing water quality, and minimizing threats to wild populations of fish. However, these systems discharge wastewater high in N and P. The ability of cattail (Typha spp.) constructed wetlands (CWs) to remove N and P from aquaculture wastewater (AWW) was examined here. Cattail CWs were established in mesocosms and had a gradient of AWW applied weekly for a total of 5 weeks. Total N and P loadings ranged from 13.7 to 209.2 mg m−2 and 3.01 to 45.97 mg m−2 over 28 days, respectively. Additions of AWW did not cause elevations in total dissolved N, total ammonia N, or nitrite N in CW water; however, concentrations of nitrate N and P in CW water were related to nutrient loading conditions. Elevations in P persisted for 3–4 weeks among high nutrient loading treatments, providing an opportunity for eutrophic conditions to develop in CW systems. However, after 33 days of treatment, >95% total P concentration reduction was achieved in all mesocosms with final concentrations <0.05 mg L−1, equivalent to reference conditions. High-loading treatments achieved greater P load reduction (856.8–955.0 mg m−2 year−1) than low-loading and reference treatments (591.7–792.7 mg m−2 year−1). This study demonstrates the effectiveness of cattail CWs to remove nutrients during AWW treatment and highlights the potential for end-of-season use in northern climates, providing insights regarding the operational timeline of such systems.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 5","pages":"767-775"},"PeriodicalIF":2.2,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20608","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141912897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Variations in fluorescence properties of humic acids from calcareous soils amended with different swine manures in a long-term soil experiment 在一项长期土壤实验中，用不同猪粪改良过的石灰性土壤中腐殖酸的荧光特性的变化。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-10 DOI: 10.1002/jeq2.20619

Ibrahim Mohammed, Busayo Kudaolu, Yuki Audette, James G. Longstaffe

{"title":"Variations in fluorescence properties of humic acids from calcareous soils amended with different swine manures in a long-term soil experiment","authors":"Ibrahim Mohammed, Busayo Kudaolu, Yuki Audette, James G. Longstaffe","doi":"10.1002/jeq2.20619","DOIUrl":"10.1002/jeq2.20619","url":null,"abstract":"Molecular properties of soil humic acid (HA) can play an important role in the mechanisms regulating plant nutrient availability. This study explores how the structure of HA is altered by long-term treatment with different forms of swine manure and how these changes may influence nutrient availability. Liquid swine manure (LSM), solid swine manure (SSM), and swine manure compost (SMC) were applied to a calcareous soil over 17 years in a long-term soil fertility study. HA was extracted from site soil samples and analyzed using fluorescence spectroscopic techniques, including a Cu2+ quenching experiment, in order to assess differences in the structure and functionality of the soil organic matter (SOM) resulting from these different treatments. Emission spectra of the SSM-HA and SMC-HA are similar, while the LSM-HA is distinct. Procedures such as parallel factor analysis (PARAFAC) decomposition of emission–excitation matrices showed that structures in the SSM-HA and SMC-HA samples have lower complexity, whereas the structures of LSM-HA are of higher complexity. Interactions with Cu2+ at different pH levels indicate that the LSM-HA shows more dynamic conformational changes as well as stronger interactions and higher quenching efficiency compared to the other treatments. Conversely, SMC-HA demonstrates relatively stable binding constant (Ka) values across different pH levels. The binding constants and quenching efficiency of SSM-HA are significantly affected by changes in pH. This study shows distinct structural characteristics of HA formed under different manure management systems and provides valuable insights into how these variations may impact nutrient dynamics in soils.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 5","pages":"697-710"},"PeriodicalIF":2.2,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20619","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141912899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The LTAR Cropland Common Experiment at Central Mississippi River Basin 密西西比河流域中部的 LTAR 耕地共同试验。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-07 DOI: 10.1002/jeq2.20614

Lori J. Abendroth, Adam P. Schreiner-McGraw, Curtis J. Ransom, Claire Baffaut, Kenneth A. Sudduth, Kristen S. Veum

引用次数: 0