Journal of environmental quality最新文献_第4页

A comprehensive review on the sources, environmental behavior, and degradation of alkylphenol ethoxylates and their metabolites in surface water and soils. 综述了烷基酚聚氧乙烯酯及其代谢物在地表水和土壤中的来源、环境行为和降解。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2025-07-09 DOI: 10.1002/jeq2.70059

Huan Chen, Yu-Hua Zheng

{"title":"A comprehensive review on the sources, environmental behavior, and degradation of alkylphenol ethoxylates and their metabolites in surface water and soils.","authors":"Huan Chen, Yu-Hua Zheng","doi":"10.1002/jeq2.70059","DOIUrl":"https://doi.org/10.1002/jeq2.70059","url":null,"abstract":"Alkylphenol ethoxylates (APEOs) and their metabolites, widely used in agricultural, industrial, and household products, are known endocrine disruptors. Since the 1980s, many countries have implemented restrictions on their production and use, necessitating an evaluation of these regulations by reviewing their source and environmental behavior in surface water and soils, along with their abiotic and biotic degradation. APEOs and their metabolites have been detected in natural water bodies ranging from ng/L to µg/L, primarily originating from stormwater runoff, wastewater effluent, and sewage sludge. Their lower oligomers (ethylene oxide < 5) are highly lipophilic, leading to significant accumulation in solid phases, particularly in organic-rich sludge/sediments. Their decreasing trend has been reported in fresh surface water, sediments, and sewage sludge, highlighting the effectiveness of regulatory policies. APEOs and their metabolites undergo degradation through abiotic (e.g., UV, H2/O2, and photocatalyst) or biotic (e.g., bacteria strains, white rot fungi, and algae) processes, with biotic degradation generally being more cost-effective and efficient. Aromatic ring cleavage is a key pathway for their mineralization and estrogenic toxicity reduction, which predominantly occurs under aerobic conditions and is rarely under anaerobic conditions. Further research should focus on improving immobilized-microorganism processes by exploring cost-effective and efficient microbial immobilization materials to improve APEO mineralization, especially under aerobic conditions.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144600641","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

Can conservation drainage practices contribute to climate change mitigation? 保育排水措施是否有助于减缓气候变化？

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2025-07-09 DOI: 10.1002/jeq2.70058

Steven J Hall, Jane R Frankenberger, Laura E Christianson, Tyler A Groh, Morgan P Davis

{"title":"Can conservation drainage practices contribute to climate change mitigation?","authors":"Steven J Hall, Jane R Frankenberger, Laura E Christianson, Tyler A Groh, Morgan P Davis","doi":"10.1002/jeq2.70058","DOIUrl":"https://doi.org/10.1002/jeq2.70058","url":null,"abstract":"Conservation drainage practices can mitigate water quality impacts of subsurface drainage, but their potential for climate change mitigation remains poorly understood. We summarized processes by which tile-drained croplands impact climate and assessed potential of conservation drainage practices to alter emissions of the greenhouse gases nitrous oxide (N2O) and methane (CH4) and stocks of soil organic carbon (SOC), compared using carbon dioxide equivalents (CO2e). Controlled drainage, bioreactors, saturated buffers, and water quality wetlands can decrease nitrate leaching with little or no increase in on-site N2O emissions, thereby decreasing indirect N2O emissions that would otherwise occur from downstream waters. However, under some conditions, CH4 emissions from bioreactors and especially from wetlands can counteract climate benefits of decreased indirect N2O emissions. Drainage water recycling could potentially increase direct soil N2O emissions while decreasing indirect N2O emissions, but these impacts might be mitigated through sub-irrigation and increased drainage intensity. Many conservation drainage practices are unlikely to markedly increase SOC, aside from saturated buffers. Expressed relative to the area of cropland treated by a given practice, saturated buffers may have the largest climate mitigation potential of examined practices due to the combination of efficient nitrate removal with low N2O emissions, lower risk of CH4 emissions, and high potential for SOC accrual. In sum, available data suggest that several conservation drainage practices can plausibly contribute to climate change mitigation as well as water quality improvement, although more comprehensive studies are needed to better constrain their effectiveness.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144600620","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

Late spring urea application increased apparent carbon dioxide equivalence emissions but fall and summer applications did not. 晚春施尿素增加了二氧化碳当量的表观排放量，而秋夏施尿素则没有增加。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2025-07-07 DOI: 10.1002/jeq2.70050

G W Reicks, D E Clay, S A Clay, D R Joshi, J Moriles-Miller, S Westhoff, S A Bruggeman

{"title":"Late spring urea application increased apparent carbon dioxide equivalence emissions but fall and summer applications did not.","authors":"G W Reicks, D E Clay, S A Clay, D R Joshi, J Moriles-Miller, S Westhoff, S A Bruggeman","doi":"10.1002/jeq2.70050","DOIUrl":"https://doi.org/10.1002/jeq2.70050","url":null,"abstract":"Synchronizing nitrogen (N) fertilizer application with plant N uptake, as opposed to applying earlier, is believed to improve N use efficiency while simultaneously reducing nitrate leaching, ammonia volatilization, and greenhouse gas emissions. However, little research has been conducted to confirm that this is true. Therefore, this study's objective was to determine the effect of urea application date (early fall, mid-fall, late fall, late spring, early summer, and midsummer) and rate (0 and 224 kg N ha-1) on the apparent carbon dioxide equivalence (CO2ea). This completely randomized field experiment was conducted six times (dates) where each treatment was replicated four times. Soil temperature and moisture along with greenhouse gases (N2O, CO2, and CH4,) were measured every 4 h for 21 days at Aurora, SD, in 2017 and 2018. N2O and CH4 were expressed in carbon dioxide equivalence, and all three gases were summed to CO2ea. Delaying the fertilizer from early to late fall decreased CO2ea from 69,375 to 18,420 g CO2ea (ha × day)-1. During late spring through midsummer, CO2ea were similar for the three application dates and averaged 101,500 g CO2ea (ha × day)-1. This study showed that the lowest CO2ea values for the 3 weeks following the application were associated with applying urea in the fall after the temperatures had decreased to less than 10°C or waiting until early summer. This research suggests that full-season assessments of fall, spring, and summer urea application dates on CO2ea are warranted.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144584080","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

Phosphorus fractions status of representative agricultural fields in North Carolina. 北卡罗来纳州代表性农田磷组分状况。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2025-07-01 DOI: 10.1002/jeq2.70057

Andria Paula Lima, Luke Gatiboni, Dionata Filippi, Tales Tiecher

{"title":"Phosphorus fractions status of representative agricultural fields in North Carolina.","authors":"Andria Paula Lima, Luke Gatiboni, Dionata Filippi, Tales Tiecher","doi":"10.1002/jeq2.70057","DOIUrl":"https://doi.org/10.1002/jeq2.70057","url":null,"abstract":"Most agricultural soils in North Carolina have high levels of available phosphorus (P), yet little is known about other accumulated P fractions and their associated environmental risks. This study characterized soil P fractions through sequential chemical fractionation of 391 samples (0-10 cm and 10-20 cm) collected from 57 counties across three regions (Tidewater, Coastal Plain, and Piedmont + Mountains). Metadata on soil management practices and crop history were also collected. Soil samples were chemically characterized and subjected to sequential fractionation using CaCl₂ (PCaCl₂), Mehlich-3 (PM3), NaOH (PoOH, PiOH), and HCl (PHCl) extracts. Occluded P (POCL) was determined by subtracting the sum of the previously extracted P fractions from the total P (PT), which was obtained through soil digestion. On average, POCL was the predominant fraction (39%), followed by PiOH (26%), PM3 (17%), PoOH (11%), PHCl (6%), and PCaCl₂ (0.3%). Organic P forms accounted for only 11% of the total extracted P. The highest PM3 content was observed in Coastal Plain soils (79 ± 9 mg kg-1), which-like all regions-exceeded the critical soil test value for P in North Carolina (52 mg kg-1). Canonical discriminant analysis distinguished soil regions, with Piedmont + Mountains showing higher clay content and POCL, Coastal Plain linked to higher Fe, sand content, and PM3, and Tidewater linked to higher Al, acidity, humic matter, and C. Coastal Plain soils also exhibited the highest degree of P saturation (29%), followed by Piedmont + Mountains (24%) and Tidewater (15%), with 75% of the evaluated counties presenting a high risk of P contamination. Minimal differences in P fractions between tillage systems suggest excessive P fertilization and limited adoption of conservation practices, highlighting the urgent need for improved P management.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144540454","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

Devastating Rio Doce mining disaster sends shockwaves through earthworm populations. 毁灭性的矿难给蚯蚓种群带来了冲击波。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2025-07-01 DOI: 10.1002/jeq2.70056

Herlon Nadolny, Yumi Oki, Walisson Kenedy-Siqueira, Marcos P Santos, Luis M Hernández-García, Daniel Negreiros, João C G Figueiredo, Fernando F Goulart, George G Brown, Geraldo W Fernandes

{"title":"Devastating Rio Doce mining disaster sends shockwaves through earthworm populations.","authors":"Herlon Nadolny, Yumi Oki, Walisson Kenedy-Siqueira, Marcos P Santos, Luis M Hernández-García, Daniel Negreiros, João C G Figueiredo, Fernando F Goulart, George G Brown, Geraldo W Fernandes","doi":"10.1002/jeq2.70056","DOIUrl":"https://doi.org/10.1002/jeq2.70056","url":null,"abstract":"The Fundão dam breach is considered one of the most severe environmental mining disasters globally, causing widespread changes to the soils of the Rio Doce watershed, one of Brazil's most important catchments. Given the ecological importance of earthworms to soil structure and dynamics, we investigated the richness, abundance, and biomass of both native and invasive earthworm species in riparian zones along the Rio Doce to understand their responses to the altered soil conditions. Sampling was conducted in reference and impacted sites across five municipalities in Minas Gerais: Mariana, Rio Casca, Ipatinga, Conselheiro Pena, and Aimorés. We identified eight species-two invasive (Amynthas gracilis and Pontoscolex corethrurus) and six native (two Rhinodrilus, three Righiodrilus, including at least two undescribed species, and one Ocnerodrilidae species)-with native biomass approximately five times lower in impacted sites compared to reference sites. Furthermore, the new tailings environment altered the relationships between soil properties and earthworm abundance for both native and invasive species. These findings indicate that native earthworms are less tolerant of the disturbed soil conditions than invasive species, which may contribute to shifts in community composition. The disruption of soil-fauna interactions underscores the long-term ecological consequences of mining-related disturbances and highlights the need for restoration efforts that consider belowground biodiversity.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144540453","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

Nitrous oxide mitigation potential of biochar derived from agricultural and forest biomass: Effects of feedstock composition and pyrolysis temperature. 来自农业和森林生物质的生物炭减缓氧化亚氮的潜力：原料组成和热解温度的影响。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2025-06-30 DOI: 10.1002/jeq2.70054

Barsha Sharma, Rajan Ghimire, Sundar Sapkota, Prabha Shrestha, Catherine E Brewer, Sushil Adhikari

{"title":"Nitrous oxide mitigation potential of biochar derived from agricultural and forest biomass: Effects of feedstock composition and pyrolysis temperature.","authors":"Barsha Sharma, Rajan Ghimire, Sundar Sapkota, Prabha Shrestha, Catherine E Brewer, Sushil Adhikari","doi":"10.1002/jeq2.70054","DOIUrl":"https://doi.org/10.1002/jeq2.70054","url":null,"abstract":"Biochar application to soil has been promoted to mitigate climate change by reducing greenhouse gas (GHG) emissions, yet significant uncertainty exists in quantifying soil nitrous oxide (N2O) emissions from biochar-amended soils. We evaluated soil N2O emissions from soils amended with biochar prepared from diverse agricultural and forest biomass and underlying biogeochemical mechanisms using long-term soil incubations and empirical modeling. Biochars compared were pinewood pyrolyzed at 460°C (PB460), pinewood pyrolyzed at 500°C (PB500), pinewood pyrolyzed at 700°C (PB700), pine bark gasified at 760°C (GB760), cattle manure pyrolyzed at 500°C (CM500), pecan wood pyrolyzed at 500°C (PW500), hemp wood pyrolyzed at 500°C (HW500), and no biochar control (CTRL). Three nonlinear empirical models, first-order kinetic model (FOKM), double exponential model (DEM), and first-order logistic (FLOG) model, were tested to evaluate N2O emissions from various biochar-amended soils. The PB700 was the most efficient in reducing N2O emissions, with 24% less total cumulative N2O emissions than CTRL. In contrast, the CM500 amendment resulted in 74% greater cumulative N₂O-N emissions than CTRL (10.4 mg kg-1) and 102%-107% greater emissions than plant-based agricultural biochars. Among models compared to study N2O emissions dynamics, the FLOG model best described the biochar N2O emissions irrespective of the biochar types. It showed the largest labile nitrogen pool (Nl) in CM500 among all biochars, and the cumulative N2O emission was positively correlated with Nl (r = 0.85; p < 0.001). Labile N content in biomass and pyrolysis temperature determined the N2O emissions mitigation potential in biochar-amended soils.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144528154","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

Physicochemical evolution of sugar maple biochar: Insights from a long-term field trial. 糖枫生物炭的物理化学演化：来自长期田间试验的见解。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2025-06-29 DOI: 10.1002/jeq2.70053

Omid R Zandvakili, Allen V Barker, Masoud Hashemi, Baoshan Xing, Kurt A Spokas, Stephen J Herbert, Alexander E Ribbe, Rafael Clemente, Sanjai J Parikh

{"title":"Physicochemical evolution of sugar maple biochar: Insights from a long-term field trial.","authors":"Omid R Zandvakili, Allen V Barker, Masoud Hashemi, Baoshan Xing, Kurt A Spokas, Stephen J Herbert, Alexander E Ribbe, Rafael Clemente, Sanjai J Parikh","doi":"10.1002/jeq2.70053","DOIUrl":"https://doi.org/10.1002/jeq2.70053","url":null,"abstract":"Biochars are recognized for their ability to sequester carbon, improve soil Ph, and reduce aluminum toxicity in acidic soils. This study investigated the changes in a hardwood (sugar maple, Acer saccharum) biochar after long-term aging in the soil, and its impact on the growth of soybean and on soil pH and available aluminum concentrations. An agricultural soil was treated with five different levels of biochar equivalent to 0, 40, 80, 120, and 160 Mg ha-1, in separated plots, using a randomized complete block design (RCBD) with five replications across three growing seasons. The ash content and pH of the aged biochar were significantly reduced (72% and 1.2 units, respectively). The decline in soil pH increased soil-available aluminum concentration. Additionally, the surface area and pore volume of aged biochar decreased by 69% and 61%, respectively, while the pore size in the aged biochar increased by 27%. Elemental analysis showed that as biochar aged, it was oxidized, decreasing its H:C ratio and increasing its O:C ratio. Furthermore, increased oxidation caused its surface charge to become more negative, with the zeta potential decreasing from -24 to -39.4 mV. Despite substantial changes to the biochar properties with aging, there was no significant effect on soybean yield. The goal of this project is to understand how biochar changes over time in the soil, its effects on soil health and aluminum toxicity, and whether it continues to benefit crops like soybeans, helping farmers and researchers make sustainable decisions about its long-term use.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144528155","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

Side by side comparison of micro-vacuum dust collection versus dust wipe for Pb determination in household dust samples. 微真空吸尘与擦尘法测定家庭粉尘样品中铅的对比研究。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2025-06-20 DOI: 10.1002/jeq2.70052

Chandima Wekumbura, Ganga M Hettiarachchi, Christina Sobin

{"title":"Side by side comparison of micro-vacuum dust collection versus dust wipe for Pb determination in household dust samples.","authors":"Chandima Wekumbura, Ganga M Hettiarachchi, Christina Sobin","doi":"10.1002/jeq2.70052","DOIUrl":"10.1002/jeq2.70052","url":null,"abstract":"Dust collection is essential for tracing lead sources and determining mitigation measures with accurate sampling and analysis. Two different simulated dust mixtures, Pb-contaminated soil and paint of three different lead concentrations, were used to test the comparability of a modified micro-vacuum sampling method to the currently recommended dust wipe method. The standard dust wipes and a modified micro-vacuum method (20 Lpm flow rate, 2 cm length Nalgene Tygon tube inlet, 2 min per 30 cm × 30 cm area) were used to collect dust and subsequent analysis. Bland-Altman's plots indicated very good agreement between methods, with minimal bias and acceptable variability. For Pb-containing soil dust at 1200 and paint dust at 1000 mg kg-1 concentration of Pb, methods did not differ significantly. For lower lead concentration samples, the dust extraction method from vacuum cassettes was negatively affected, resulting in significantly lower lead loadings than the dust wipe method; in follow-up studies in selected samples, sonication facilitated more complete extraction (76%-91%) from vacuum cassettes. Overall, results suggested potential for developing a standardized micro-vacuum method with additional benefits for house dust collection.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144333194","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

Selecting performance indicators for farms and ranches engaged in collaborative agroecosystem research. 为从事农业生态系统合作研究的农场和牧场选择绩效指标。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2025-06-20 DOI: 10.1002/jeq2.70051

Megan Donovan, Sheri Spiegal, Nicole Kaplan, David Archer, Alycia Bean, Sarah E J Beebout, Brandon T Bestelmeyer, Patrick Clark, Alia DeLong, Ann-Marie Fortuna, Claire N Friedrichsen, David L Hoover, David Huggins, Peter J A Kleinman, Matthew M McIntosh, Chris S Renschler, John Ritten, Douglas R Smith, Nicholas P Webb, J D Wulfhorst

{"title":"Selecting performance indicators for farms and ranches engaged in collaborative agroecosystem research.","authors":"Megan Donovan, Sheri Spiegal, Nicole Kaplan, David Archer, Alycia Bean, Sarah E J Beebout, Brandon T Bestelmeyer, Patrick Clark, Alia DeLong, Ann-Marie Fortuna, Claire N Friedrichsen, David L Hoover, David Huggins, Peter J A Kleinman, Matthew M McIntosh, Chris S Renschler, John Ritten, Douglas R Smith, Nicholas P Webb, J D Wulfhorst","doi":"10.1002/jeq2.70051","DOIUrl":"10.1002/jeq2.70051","url":null,"abstract":"The pace of global change complicates the assessment of the outcomes of agricultural management, hindering decision-making by producers, researchers, and consumers. The Long-Term Agroecosystem Research Network (LTAR) is in a unique position to advance monitoring to inform decision-making. Here, we describe how the network selected performance indicators designed to measure the trade-offs from various farming and ranching approaches. Indicator selection was motivated by the need for common indicators that apply to the diversity of LTAR sites, but they are intended for widespread use by producers and other managers via the Agricultural Performance Indicator and Context Knowledge System (AgPICKS). An initial set of domains, attributes, and indicators was developed via synthesis of structured conversations at national LTAR meetings. Early use revealed the need for a systematically inclusive process toward improvement. We designed and implemented an iterative decision-making protocol to reach a consensus for a new version. The indicator framework differs from others in its attention to production and social outcomes and its grounding in networked agricultural science. Next steps entail developing web tools and personnel for AgPICKS that use LTAR's data and knowledge ecosystem to guide users in setting benchmarks of the desired conditions for their prioritized indicators, collect data, and visualize data to assess how well their management meets their benchmarks, toward the accurate measurement of management outcomes in a changing world.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144333193","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

Greenhouse gas emissions altered by the introduction of a year-long fallow to continuous rice systems. 在连续的水稻系统中引入一年的休耕改变了温室气体排放。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2025-06-20 DOI: 10.1002/jeq2.70055

Zhenglin Zhang, Tommy L D Fenster, Bruce A Linquist

{"title":"Greenhouse gas emissions altered by the introduction of a year-long fallow to continuous rice systems.","authors":"Zhenglin Zhang, Tommy L D Fenster, Bruce A Linquist","doi":"10.1002/jeq2.70055","DOIUrl":"10.1002/jeq2.70055","url":null,"abstract":"Rice (Oryza sativa L.) production in California follows a norm of mono-cropping with little to no rotations or fallows. Both winter droughts, which lead to water restrictions, and spring rains, which inhibit field machinery operations, have resulted in increased fallow frequencies, where no crop is grown during the summer growing season. A 3-year field study was conducted to investigate summer and winter greenhouse gas (GHG) emissions (CH4 and N2O) in three treatments: continuous rice (CR), rice following the introduction of a year-long fallow (FR), and the fallow phase (F). Summer CH4 emissions were lower in FR than CR in 2 out of 3 years, averaging a 33% reduction across years. Particulate organic carbon and mineral-associated organic carbon levels in CR and FR were similar in the year with no treatment effect on CH4 emissions-potentially due to differences in residue management. There were negligible summer CH4 emissions in F. Summer N2O emissions were low for all three treatments. Summer global warming potentials (GWP) accounted for more than 96% of annual GWP in CR (13,937 kg CO2eq ha-1) and FR (9,236 kg CO2eq ha-1). For F, the winter season accounted for 94% of the annual GWP (413 kg CO2eq ha-1) due to N2O emissions. Overall, this study provides a valuable resource for quantifying changes in GHG emissions when fallow periods are introduced into rice monoculture in California.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144333192","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