Agriculture, Ecosystems & Environment最新文献

{"title":"Simultaneous diversification of cover and cash crops: Short-term agronomic and soil health outcomes","authors":"Rachel Wooliver ,&nbsp;Lori A. Duncan ,&nbsp;Jake McNeal ,&nbsp;Tyson B. Raper ,&nbsp;Andrew Denton ,&nbsp;Sindhu Jagadamma","doi":"10.1016/j.agee.2025.110138","DOIUrl":"10.1016/j.agee.2025.110138","url":null,"abstract":"<div><div>Positive relationships between plant diversity and ecosystem functioning are frequent in natural systems, however research on year-round plant diversification to improve agroecosystem outcomes is limited. Challenges such as lag times for soil health benefits during the early transition years of cover cropping may be compensated by increases in crop yield from cash crop rotations. To better understand management strategies that could promote agroecosystem productivity and sustainability, we explored responses of agronomic and soil multifunctionality to simultaneous winter cover crop mixes and cash crop rotation using a three-year field experiment in western Tennessee, USA. Cover crop treatments included a no cover crop control (winter fallow), single-species winter wheat (<em>Triticum aestivum</em> L.), single-species crimson clover (<em>Trifolium incarnatum</em> L.), two-species wheat-clover mix, and five-species mix of cereal rye (<em>Secale cereale</em> L.), oat (<em>Avena sativa</em> L.), clover, hairy vetch (<em>Vicia villosa</em> Roth), and radish (<em>Raphanus sativus</em> L.). Cropping systems included continuous corn (<em>Zea mays</em> L.), continuous soybean (<em>Glycine max</em> L.), corn-soybean rotation, and corn-cotton (<em>Gossypium hirsutum</em> L.)-soybean rotation. Total agronomic and soil health multifunctionality were weakly correlated across treatment combinations. The single-species clover and both mixes led to the highest agronomic multifunctionality in all cropping systems. Single-species wheat and wheat-clover mix provided the greatest cover crop biomass inputs, but both cover crops decreased overall cash crop yields (corn, cotton, and soybean scaled within crop and year) relative to the five-species mix. This result for yield was driven by year-one reductions in corn yield by averages of 2.15 and 1.74 Mg ha⁻¹ in single-species wheat and wheat-clover mix cover cropped plots (respectively) compared to all other cover crop treatments. Cash crop rotation did not influence agronomic multifunctionality, although in year three, rotation with soybean increased corn yield by 1.49 Mg ha⁻¹ yr⁻¹ relative to monocropped corn, and rotation with corn and cotton increased soybean yield by 0.34 Mg ha⁻¹ yr⁻¹ relative to monocropped soybean. Wheat-clover mix as a cover crop increased mineral-associated organic C relative to winter fallow in the continuous soybean system, however there were no strong overall influences of cover crop or crop rotation on soil multifunctionality. Overall, our results suggest that winter cover crops can increase agronomic benefits of cash cropping systems in the southeastern United States within three years of adoption, but soil health benefits may be more difficult to detect in this short timeframe.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"399 ","pages":"Article 110138"},"PeriodicalIF":6.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145657697","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}

{"title":"Responses of plant productivity and soil nutrient concentration to different levels of semi-arid grassland degradation","authors":"Yajun Zhou ,&nbsp;Limin Duan ,&nbsp;Jianying Guo ,&nbsp;Denghua Yan ,&nbsp;Yingjie Wu ,&nbsp;Yixuan Wang ,&nbsp;Huade Guan ,&nbsp;Okke Batelaan ,&nbsp;Tingxi Liu","doi":"10.1016/j.agee.2025.110198","DOIUrl":"10.1016/j.agee.2025.110198","url":null,"abstract":"<div><div>Accurately assessing grassland health necessitates quantifying changes in plant community diversity and soil physicochemical properties during the successional processes of vegetation degradation and restoration. This study classified degradation into three stages (light, moderate, and heavy) and restoration into two stages (enclosure ≤5 years and enclosure &gt;5 years). We conducted a quantitative assessment of vegetation characteristics and the dynamics of soil carbon, nitrogen, and phosphorus across different degradation and restoration stages, utilizing 30 pairs of grazed and exclosure control plots across the watershed. Our results revealed significant variations in vegetation cover and species richness along the degradation and restoration gradients. Aboveground biomass and vegetation cover declined progressively with increasing degradation intensity. Soil nutrients, including SOC, TN, and TP, exhibited a pronounced \"surface accumulation\" pattern, with the highest concentrations in the topsoil (0–10 cm). Significant differences in SOC, TN, and TP were observed among degradation stages in surface soils, while bulk density (BD) and pH values showed relatively little variation. Soil water content and TP differed significantly in the topsoil among restoration stages. Enclosure enhanced aboveground biomass and species richness, but species diversity declined when enclosure duration exceeded five years. Although soil nutrient contents changed after enclosure, the relative rates of change in soil stoichiometry remained largely unchanged. These findings highlight the importance of integrating vegetation and soil parameters for a comprehensive assessment of grassland health and restoration effectiveness.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"399 ","pages":"Article 110198"},"PeriodicalIF":6.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880605","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}

{"title":"What makes a service plant attractive to pollinators? An exploration of the influence of plant traits among 38 flowering plant species","authors":"Mengxiao Sun ,&nbsp;Bing Liu ,&nbsp;Wopke van der Werf ,&nbsp;Felix J.J.A. Bianchi ,&nbsp;Yanhui Lu","doi":"10.1016/j.agee.2025.110134","DOIUrl":"10.1016/j.agee.2025.110134","url":null,"abstract":"<div><div>Global declines of pollinator communities have triggered interest in flowering plants to support pollinators in agricultural areas. Flowering plants may differ in their attractiveness for pollinators, and it is not clear which plant traits (co-)determine the attractiveness of flowering plants for different pollinator groups. Here we assessed the communities of hoverflies and bees on 38 flowering plant species by visual counts and sweep net sampling in a replicated field experiment in Korla, Xinjiang, China. There were 13 sampling rounds in 2020 and 15 in 2021. Pollinators from sweep net samples were identified to species level and their body size recorded. Flower cover, corolla depth and width, plant height, and flowering duration were assessed. A total of 2751 hoverflies, 1350 honeybees and 621 wild bees were observed using the two sampling methods. <em>Diplotaxis tenuifolia</em>, <em>Foeniculum vulgare</em> and <em>Anethum graveolens</em> were the most frequently visited plants. The abundance of adult hoverflies and honeybees was negatively associated with corolla depth of flowering plants in 2020, while wild bee abundance was consistently negatively associated with corolla depth across both years. Plant flowering duration not only influenced the period of pollinator abundance, but longer flowering plants also hosted a higher abundance of hoverflies and wild bees in 2021. The abundance of pollinators was not associated with flower cover. The body length of hoverflies and wild bees was not associated with flowering plant traits. Our study demonstrates the potential of trait-based approaches to predict pollinator responses to inform the selection of flowering plants. However, it also reveals interannual variability in trait-pollinator relationships, highlighting the need for continued empirical testing to ensure effective plant selection for supporting local pollinator communities.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"399 ","pages":"Article 110134"},"PeriodicalIF":6.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145623461","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}

{"title":"Microbial genomic strategies control the soil iron-phosphorus nexus in successive rotations of Chinese fir plantation","authors":"Yuntian Long ,&nbsp;Wenwen Chen ,&nbsp;Kate Heal ,&nbsp;Ying Li ,&nbsp;Lei Chen ,&nbsp;Chuifan Zhou","doi":"10.1016/j.agee.2025.110170","DOIUrl":"10.1016/j.agee.2025.110170","url":null,"abstract":"<div><div>In subtropical China, successive rotations of Chinese fir (<em>Cunninghamia lanceolata</em>) plantations exacerbate soil phosphorus (P) limitation, yet the iron (Fe)-P coupling mechanisms mediated by microbial adaptation remain poorly understood. This study integrated soil P fractionation, Fe mineral speciation via Mössbauer spectroscopy, and metagenomic sequencing to unravel how Fe oxides and microbial functional traits collectively regulate P availability across four rotation stages of Chinese fir. The results demonstrated that successive rotations shifted the composition of soil Fe minerals toward forms with a stronger capacity to adsorb P, thereby increasing soil Fe-occluded phosphorus concentrations. A significant depletion of soil organic P pools was observed: from the first to the fourth rotation, labile organic phosphorus decreased from 60 to 23 mg kg⁻¹, and moderately labile organic phosphorus decreased from 218 to 139 mg kg⁻¹. In response, soil microorganisms selectively increased the abundance of genes related to organic P mineralization and P transport. This enhanced their capacity to decompose and utilize soil organic P sources to maintain P availability, a strategy that nonetheless accelerated the depletion of soil organic P. In contrast, adaptation of Fe-cycling microorganisms, marked by an increased abundance of the <em>fbpABC</em> gene (encoding an Fe transporter), played a particularly critical role by unlocking occluded P from Fe oxides. These findings indicate the potential for soil microbiome management to promote sustainable phosphorus utilization in intensively managed forestry plantations.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"399 ","pages":"Article 110170"},"PeriodicalIF":6.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145753435","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}

{"title":"Dissimilarity among soil restoration practices influences soil functions and plant biomass: A functional group approach","authors":"Huiying Li ,&nbsp;Anika Lehmann ,&nbsp;Edda Kunze ,&nbsp;Yaqi Xu ,&nbsp;Bo Tang ,&nbsp;Tingting Zhao ,&nbsp;Rebecca Rongstock ,&nbsp;Matthias C. Rillig","doi":"10.1016/j.agee.2025.110194","DOIUrl":"10.1016/j.agee.2025.110194","url":null,"abstract":"<div><div>Soil restoration amendments are of great importance to maintain soil health. However, the effects of joint application of multiple (more than two) restoration amendments are rarely addressed. We selected nine restoration amendments allocated to three functional groups: organic amendments, inorganic amendments and microbial inoculation. We investigated effects of amendment functional dissimilarity, i.e. if amendments from diverse groups can perform better than amendments from the same group. By maintaining a balanced selection across three groups, we increased the number of amendments to 3, 6 and 9 to unravel its impacts. We further tested if such combinations enhanced resistance against drought by comparing plant biomass, soil enzyme activities, and soil physiochemical properties under drought (30 % water holding capacity) and well-watered conditions (60 % water holding capacity). Increasing the number of restoration amendments increased soil pH toward neutrality, driven primarily by inorganic amendments such as bentonite and vermiculite, irrespective of watering conditions, while improvements in aggregate stability and plant growth occurred only under well-watered conditions. Three amendments from diverse functional groups maximized plant growth and soil multifunctionality under well-watered conditions. On the other hand, under drought conditions, individual amendments- such as straw and vermiculite- showed the strongest positive effects on the overall soil functional performance and plant biomass, exceeding those of combined treatments. Our work highlights the importance of applying restoration amendments from diverse functional groups under well-watered conditions and applying single restoration amendments facing drought stress.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"399 ","pages":"Article 110194"},"PeriodicalIF":6.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145823104","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}

{"title":"Diversified cropping systems enhance soybean resilience to extreme drought","authors":"Ashani Thilakarathne ,&nbsp;Matt Woods ,&nbsp;Mriganka De ,&nbsp;Marshall D. McDaniel","doi":"10.1016/j.agee.2025.110180","DOIUrl":"10.1016/j.agee.2025.110180","url":null,"abstract":"<div><div>Extreme precipitation threatens global agriculture production. In the Midwest U.S., drought-prone summers can lead to crop yield losses. Agricultural diversification has been touted as a climate-resilient management practice that can buffer against drought-induced crop yield decline; however, few studies have tested this hypothesis. Our objectives were to: 1) synthesize previously published and new unpublished soil physical data from a long-term experiment (&gt;20-years) that might provide mechanistic evidence for climate-resilience, 2) measure soybean physiological response to an experimentally imposed drought. Across both objectives, we compared a business-as-usual maize-soybean rotation (2-year) to a more diversified maize-soybean-oat/alfalfa-alfalfa rotation with manure inputs (4-year). Across the 20-year experiment (Objective 1), the 4-year decreased bulk density by 3 %, decreased overall penetration resistance by 23 %, and increased water content at field capacity by 16 % compared to the 2-year. After imposing drought in both rotations (Objective 2), the 4-year reduced drought-induced decline in stomatal conductance by half compared to the 2-year. According to response ratios, the extreme drought decreased the 2-year soybean yield by 11 %, while the 4-year had no detectable yield loss. Diversified cropping systems can improve soil physical properties, and this is the most parsimonious factor explaining observed drought resilience in soybeans. Our data support the notion that diversified cropping systems can buffer against negative consequences of extreme drought – a likely scenario for future growing seasons.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"399 ","pages":"Article 110180"},"PeriodicalIF":6.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837277","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}

{"title":"Loss of soil ecosystem multifunctionality during alpine grassland restoration with reseeding and organic fertilization","authors":"Zuonan Cao ,&nbsp;Guozheng Hu ,&nbsp;Xuyang Han ,&nbsp;Guoxu Ji ,&nbsp;Yandan Ma ,&nbsp;Zheng Li ,&nbsp;Hasbagan Ganjurjav ,&nbsp;Jun Yan ,&nbsp;Youxia Wang ,&nbsp;Qingzhu Gao","doi":"10.1016/j.agee.2025.110140","DOIUrl":"10.1016/j.agee.2025.110140","url":null,"abstract":"<div><div>The degradation of alpine grasslands threatens their capacity to provide essential ecosystem services, prompting extensive restoration efforts such as reseeding and fertilization. However, the long-term effects of these approaches on soil ecosystem multifunctionality (EMF) remain uncertain. Here, we conducted a five-year field experiment in a degraded alpine grassland on the central Qinghai-Tibet Plateau in Nagqu to assess the effect of organic fertilization, native grasses (<em>Poa annua</em>, <em>Elymus nutans</em>, and <em>Puccinellia distans</em>) reseeding, oat (<em>Avena sativa L</em>.) reseeding and their combinations. The most significant finding was that organic fertilization both alone and when combined with grass reseeding, significantly enhanced soil EMF, while all other treatments decreased it due to nutrient limitation. While most treatments increased aboveground productivity, only the combination of grass reseeding and fertilization simultaneously improved plant diversity. When combined with fertilization, grass reseeding unexpectedly resulted in higher soil nutrient contents compared to oat reseeding. Additionally, only grass reseeding combined with fertilization maintained stable soil threshold elemental ratios of C:N, suggesting a balanced nutrient cycle. Random forest analysis further confirmed that soil properties and microbial functions explained 89 % of the variation in soil EMF. We concluded that restoration strategies focused solely on aboveground productivity can result in soil EMF loss by interfering with microbial-driven nutrient cycling. Therefore, the combination of native grass reseeding with organic fertilization should be considered the optimal restoration approach for degraded alpine grasslands.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"399 ","pages":"Article 110140"},"PeriodicalIF":6.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145657703","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}

{"title":"Restoring aquaculture ponds to coastal wetlands using native vegetation reduces methane (CH4) production and emissions","authors":"Wenjing Liu ,&nbsp;Hong Yang ,&nbsp;Ping Yang ,&nbsp;Qitao Xiao ,&nbsp;Jujuan Gao ,&nbsp;Lihua Wang ,&nbsp;Chuan Tong ,&nbsp;Yingzi Wang ,&nbsp;Pingping Guo ,&nbsp;Dongyao Sun ,&nbsp;Yongxin Lin ,&nbsp;Kam W. Tang","doi":"10.1016/j.agee.2025.110177","DOIUrl":"10.1016/j.agee.2025.110177","url":null,"abstract":"<div><div>Many coastal marshes dominated by the invasive species, for example, <em>Spartina alterniflora</em>, had been cleared to create aquaculture ponds for shrimp farming. Efforts were made in recent years to revert aquaculture ponds to wetlands using the native species <em>Phragmites australis</em> and <em>Cyperus malaccensis</em>. This study quantified the impact of this restoration effort on sediment methane production potential (<em>P</em>_CH4) and methane emission (<em>F</em>_T-CH4) in southeastern China. The results showed that restoration decreased <em>P</em>_CH4 from 30.3 to 23.9 ng CH₄ g⁻¹ d⁻¹ and decreased <em>F</em>_T-CH4 from 13.9 to 2.8 mg m⁻² h⁻¹. The abundance of <em>mcrA</em> gene decreased by 58.6 %, whereas <em>pmoA</em> gene abundance increased by 103.1 % in restored wetlands. Structural equation modeling (SEM) showed that decrease in <em>P</em>_CH4 was primarily caused by changes in sediment labile organic carbon and SO₄^2- contents, which led to a decrease in <em>mcrA</em> gene and an increase in <em>pmoA</em> gene. Reconnecting the aquaculture ponds to adjacent coastal area improved seawater exchange and oxygenation. Compared to the original <em>Spartina-</em>dominated marshes, the restored wetlands had lower methane contribution, above-ground vegetation biomass and organic deposition. Overall, this study showed that active restoration using native vegetation is preferred over passive restoration for coastal wetlands.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"399 ","pages":"Article 110177"},"PeriodicalIF":6.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797678","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}

{"title":"Enhanced anaerobiosis and increased carbon input boost microbial-mediated carbon sequestration in paddy irrigation-drainage units","authors":"Shaopeng Wang ,&nbsp;Yinghua Yin ,&nbsp;Fulin Zhang ,&nbsp;Yongxin Liao ,&nbsp;Yan Zhou ,&nbsp;Hongbin Liu ,&nbsp;Limei Zhai","doi":"10.1016/j.agee.2025.110211","DOIUrl":"10.1016/j.agee.2025.110211","url":null,"abstract":"<div><div>Enhancing carbon sequestration in rice paddies while mitigating greenhouse gas (GHG) emissions is a critical environmental challenge. Rice field management typically occurs within irrigation and drainage units (IDUs), which comprise paddies and ditches. However, comprehensive studies on microbial carbon cycle processes within IDUs are scarce. This study examined GHG emissions, carbon storage, microbial metagenomics, and physicochemical properties of two types of IDUs with different anaerobic conditions and carbon inputs: rice–wheat (RW) rotation and rice–crayfish (RC) rotation. Findings indicate that the greatest divergence in microbial functional traits for carbon cycling between the ditch and paddy was in carbon fixation, in which the ditch acted as a carbon source and the paddy served as a carbon sink in RW IDUs. The input and balance of carbon and nitrogen are limiting factors for microbial carbon turnover in long-term anaerobic ditches. The RC ditch with simultaneous additional carbon and nitrogen inputs from feed increased microbial carbon turnover and accumulation compared with the RW ditch that only receives runoff nitrogen. The duration of anaerobic conditions becomes the decisive factor for carbon accumulation in paddies under substantial concurrent carbon and nitrogen inputs. In continuously flooded RC paddy fields, the winter season witnessed a 29.5 % increase in carbon-fixing microbes and a 14.0 % decrease in carbon-metabolizing microbes, leading to a 91.6 % reduction in respiration rates and a 53.8 % increase in net ecosystem carbon budget. Notably, the persistence of anoxic conditions augments methane emissions in RC IDUs, particularly through aceticlastic methanogenesis. Comprehensive analysis indicates that the overall net global warming potential for the RW IDUs escalates to 27,603.2 kg·ha⁻¹, which is 4.23 times that of the RC IDUs. This study underscores the microbial-mediated carbon cycling within two distinct IDUs, offering vital insights into carbon sequestration enhancement and emission reduction in rice agricultural practices.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"399 ","pages":"Article 110211"},"PeriodicalIF":6.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880537","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}

{"title":"Timing of grass renewal regulates nitrous oxide emissions from a drained boreal peatland","authors":"Sanni Semberg,&nbsp;Hem Raj Bhattarai,&nbsp;Petra Manninen,&nbsp;Yuan Li,&nbsp;Narasinha Shurpali,&nbsp;Perttu Virkajärvi","doi":"10.1016/j.agee.2025.110155","DOIUrl":"10.1016/j.agee.2025.110155","url":null,"abstract":"<div><div>Drained peatlands in northern latitudes have been used for forage production for decades. They are recognized sources of nitrous oxide (N₂O) emissions. In boreal regions, grassland renewal is mandatory to maintain high forage productivity and quality, yet renewal practices involving ploughing can significantly increase N₂O emissions. Here, we assessed the effect of plough timing (autumn ploughing with spring reseeding (AP) vs summer ploughing with immediate reseeding (SP)) on N₂O emissions from a drained peatland in Eastern Finland. We conducted a three-year field experiment measuring N₂O fluxes using manual chambers during snow-free seasons and snow gradient method during the snow-covered periods. Results showed that AP (88 kg N₂O-N ha⁻¹) emitted 2.6 times more N₂O than SP (34.5 kg N₂O-N ha⁻¹) over the three years and exhibited greater interannual variability in its N₂O emissions. Ploughing in the autumn led to sustained higher N₂O emissions for longer periods and affected the following non-growing season and annual emissions considerably. Similarly, three-year yield-scaled N₂O emissions were 2.2 times more in AP (3.7 kg N Mg⁻¹) than in SP (1.7 kg N Mg⁻¹). We found that grassland renewal increased the yield compared to the yields prior to renewal. These findings suggest that summer ploughing with prompt reseeding is a more sustainable practice for grassland renewal on drained peatlands, offering reduced N₂O emissions without compromising productivity.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"399 ","pages":"Article 110155"},"PeriodicalIF":6.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145692513","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}