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Assessing the non-target effects of herbicides on field margin plant communities after controlling for soil, climate, local context and landscape metrics 在控制土壤、气候、当地环境和景观指标后,评估除草剂对田间边缘植物群落的非目标效应
IF 6.4 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-04-15 Epub Date: 2026-01-06 DOI: 10.1016/j.agee.2025.110190
Laura Henckel , Guillaume Fried , Jean-Philippe Guillemin , Isis Poinas , Christine N. Meynard , Benoit Ricci
Pesticides are often identified as one of the major causes of biodiversity decline in farmlands. However, our knowledge about this relationship has mostly being inferred from small to landscape-scale studies, or from indirect indicators of agricultural practices at large scales. Here, we used a national network of more than 500 sites monitored yearly from 2013 to 2018 in France to assess the non-target effects of herbicides on field margin plant communities. We used hierarchical generalized linear models to investigate the effects of practices on plant species richness, plant species evenness, proportion of nature-value plants, and proportion of grasses in field margins, while controlling for a large number of possible confounding effects. The intensity of herbicide use had a negative effect on plant species richness, and on the proportion of nature-value plants. In the margin of cereal fields, there was a negative effect of dicotyledon herbicides on richness and a negative effect of grass herbicides on species evenness. We also identified, in some specific crops, a negative effect of non-herbicide treatments on margin flora richness and on the proportion of nature-value plants. The presence of surrounding grasslands had a consistent favourable effect on richness and on the proportion of nature-value plants in field margins. Finally, situations of risk for pesticides drift had a negative effect on margin flora. This study confirms that reducing herbicide use represents a robust lever to maintain the floristic diversity of field margins, which could be combined with strategies reducing the risk of pesticide drift.
农药通常被认为是农田生物多样性下降的主要原因之一。然而,我们对这种关系的了解大多是从小型到景观尺度的研究中推断出来的,或者是从大规模农业实践的间接指标中推断出来的。在这里,我们使用了一个由法国500多个站点组成的国家网络,从2013年到2018年每年监测一次,以评估除草剂对田间边缘植物群落的非目标效应。在控制大量可能的混杂效应的同时,采用层次广义线性模型研究了不同实践对植物物种丰富度、物种均匀度、自然价值植物比例和草地边缘比例的影响。除草剂使用强度对植物物种丰富度和具有自然价值的植物比例有负向影响。在谷地边缘,双子叶除草剂对丰富度有负影响,禾草除草剂对物种均匀度有负影响。我们还发现,在某些特定作物中,非除草剂处理对边缘植物区系丰富度和自然价值植物的比例有负面影响。周围草地的存在对丰富度和具有自然价值的植物在田间边缘的比例有一致的有利影响。最后,农药漂移风险情况对边缘植物区系有不利影响。该研究证实,减少除草剂的使用是维持农田边缘植物区系多样性的有力杠杆,可以与减少农药漂移风险的策略相结合。
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引用次数: 0
Leaf and root traits codetermine biomass production and allocation patterns in agriculturally managed wetlands in a semi-arid region 叶和根性状共同决定了半干旱区农业管理湿地的生物量生产和分配模式
IF 6.4 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-04-15 Epub Date: 2026-01-08 DOI: 10.1016/j.agee.2026.110229
Xiaofei Wang , Yu An , Le Wang , Mingye Zhang , Xianglong Xing , Shouzheng Tong , Haitao Wu
In semi-arid regions, wetlands are increasingly converted to agriculture use due to growing food demand. Current practices like mowing and grazing considerably alter plant biomass allocation patterns, yet the underlying functional mechanisms remain unclear. To clarify this, we combine community-level leaf and root traits with biomass partitioning analysis across a management gradient (from natural to heavily grazed wetlands) in China's Songnen Plain. Results revealed that agricultural intensification triggered strategic biomass reallocation: aboveground biomass (AGB) and belowground biomass (BGB) decreased 83.1 % and 51.9 % from natural wetlands (NW, 1093.5 g m⁻²) to heavily grazed sites (HG), while root-to-shoot ratio (RSR) increased 12-fold (HG:3.6 vs. NW:0.3). This coincided with the coordinated leaf-root economic strategies: NW favored acquisitive strategies (e.g. peak high leaf area [LA] =1917.1 mm², and specific root length [SRL] = 3219.3 cm g⁻¹), whereas mowed/grazed sites optimized conservation investments (e.g. peak leaf carbon concentration [LCC] = 487.4 g kg⁻¹, and root carbon concentration [RCC] = 391.0 g kg⁻¹), illustrating a functional shift from resource acquisition to conservation. Correlation analysis and stepwise regression identified leaf dry weight (LDW), leaf carbon-to-nitrogen ratio, leaf phosphorus concentration, LA, LCC, root length, specific root area (SRA), RCC, and root surface area (RSA) as key predictors for AGB, whereas BGB was predicted by LCC, LDW and leaf nitrogen-to-phosphorus ratio, RSA, SRA and root phosphorus concentration (RPC). Leaf traits (LA and LDW) and root traits (RCC, RPC, and SRL) were identified as the best predictors of RSR. Variance partitioning analysis showed that leaf-root trait interactions dominated biomass production and allocation (76.9 %-89.8 % of explained variance), underscoring an integrated root-leaf economic network. Structural equation modeling further revealed that the decreased LA indirectly enhanced RSR through positive effects on AGB and synergistic interactions with LDW, SRL and RCC. Contrasting effects of LA-LDW/SRL interactions on BGB further regulated RSR. LA-driven synergies with SRL and trade-offs between RCC and SRL directly modulated RSR. These results collectively demonstrate that trait interaction networks, rather than individual traits, serve as the key driver of biomass production and allocation in agriculturally managed wetlands. This functional trait-coordination framework advances our understanding of plant strategies for enhancing wetland resilience in semi-arid agricultural landscape.
在半干旱地区,由于粮食需求的增长,湿地越来越多地转变为农业用途。目前的做法,如割草和放牧显著改变了植物生物量分配模式,但潜在的功能机制尚不清楚。为了澄清这一点,我们将群落水平的叶片和根系特征与生物量分配分析结合起来,分析了中国松嫩平原不同管理梯度(从自然湿地到重度放牧湿地)的生物量分配。结果显示,农业集约化触发战略生物质重新分配:地上部生物量(AGB)和地下的生物量(BGB)减少83.1 % 51.9 %从自然湿地(NW, 1093.5 g m⁻²)严重擦伤了网站(HG),而root-to-shoot比率(RSR)增加了12倍(HG: 3.6与NW: 0.3)。这与叶根协调的经济策略相吻合:西北地区倾向于获取策略(例如,峰值高叶面积[LA] =1917.1 mm²,比根长度[SRL] = 3219.3 cm g⁻¹),而刈/放牧地则优化了保护投资(例如,峰值叶碳浓度[LCC] = 487.4 g kg⁻¹,根碳浓度[RCC] = 391.0 g kg⁻¹),说明了从资源获取到保护的功能转变。相关分析和逐步回归表明,叶片干重(LDW)、叶片碳氮比、叶片磷浓度、LA、LCC、根长、比根面积(SRA)、比根面积(RCC)和根表面积(RSA)是AGB的关键预测因子,而BGB则由LCC、LDW和叶片氮磷比、RSA、SRA和根磷浓度(RPC)预测。叶片性状(LA和LDW)和根系性状(RCC、RPC和SRL)是RSR的最佳预测因子。方差划分分析表明,叶片-根系性状互作主导了生物量生产和分配(占解释方差的76.9% % ~ 89.8% %),表明根系-叶片经济网络是一体化的。结构方程模型进一步表明,LA的降低通过对AGB的正向作用以及与LDW、SRL和RCC的协同作用间接提高了RSR。LA-LDW/SRL互作对BGB的影响比较进一步调控了RSR。la驱动的与SRL的协同作用以及RCC和SRL之间的权衡直接调制了RSR。这些结果共同表明,性状相互作用网络,而不是单个性状,是农业管理湿地生物量生产和分配的关键驱动因素。这种功能性状-协调框架促进了我们对半干旱农业景观中增强湿地恢复力的植物策略的理解。
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引用次数: 0
Wildflower strip influence on pest predation in cereal fields: Temporal variations and complementarity among predator guilds 麦田野花带对害虫捕食的影响:捕食者行会间的时间变化和互补性
IF 6.4 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-04-15 Epub Date: 2026-01-12 DOI: 10.1016/j.agee.2026.110233
Florencia Baudino , Ezequiel González , Martin Štrobl , Matěj Trnka , Alena Samková , Michal Knapp
Wildflower strips (WFS) are widely used measures to support biodiversity and ecosystem services, including pest control, in intensively managed agricultural landscapes. However, their effectiveness in reducing pest abundance and supporting natural enemies is highly variable. We studied the effect of WFS on predation rates and egg abundance of cereal leaf beetles (CLB) across four sampling periods spanning the phenology of cereal crops. We quantified predation by piercing-sucking, chewing and unknown predators using sentinel egg cards within WFS and in four locations within cereal fields (at distances of 12 and 36 m from WFS and control margins), and measured natural CLB egg abundance on cereal plants by visual observation. We analyzed the influence of WFS, field margin proximity, and sampling period on CLB egg predation by different predator guilds, on CLB egg abundance, and the relationship between CLB abundance and predation rates. CLB predation was mainly attributed to unknown predators (i.e., missing eggs), followed by piercing-sucking predators. Predation rates were higher within wildflower strips compared to cereal fields, especially in late June, and tended to be lowest far from control field margins. CLB egg abundance peaked in May and was positively related to local predation rates. The positive association between egg abundance and predation suggests that resource concentration effects are important drivers of CLB control, especially in sites without wildflower strips. Our results underscore the importance of incorporating spatial and temporal dynamics of both pests and predators into habitat-based strategies for sustainable biological control, which can help to limit pesticide use.
在集约化管理的农业景观中,野花带是支持生物多样性和生态系统服务(包括病虫害防治)的广泛措施。然而,它们在减少害虫数量和支持天敌方面的效果变化很大。本文研究了不同物候时期WFS对谷类叶甲虫(CLB)捕食率和卵丰度的影响。我们在WFS内和谷物田内的4个地点(距离WFS和对照边缘分别为12和36 m)使用sentinel卵卡,通过刺吸、咀嚼和未知捕食者来量化捕食行为,并通过目视观察测量了谷物植物上CLB天然卵的丰度。分析了WFS、野外边缘接近度和采样周期对不同捕食者行会捕食CLB卵的影响、对CLB卵丰度的影响以及CLB卵丰度与捕食率的关系。CLB捕食者主要是未知捕食者(即缺卵),其次是刺吸捕食者。与谷地相比,野花带内的取食率较高,特别是在6月下旬,且在远离对照田边缘的地方取食率最低。CLB卵丰度在5月达到高峰,与当地捕食率呈正相关。卵丰度与捕食量之间的正相关表明资源集中效应是CLB控制的重要驱动因素,特别是在没有野花带的地点。我们的研究结果强调了将害虫和捕食者的时空动态纳入基于栖息地的可持续生物控制策略的重要性,这有助于限制农药的使用。
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引用次数: 0
Long-term reclamation enhances soil organic carbon accumulation via mitigating salinity and alkalinity in coastal saline soils 长期垦殖通过降低滨海盐碱地的盐分和碱度,促进了土壤有机碳的积累
IF 6.4 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-04-15 Epub Date: 2026-01-05 DOI: 10.1016/j.agee.2025.110212
Wei Zhu , Shiguo Gu , Xin Zhang , Xuan Yu , Shuanghuang Yu , Xiangping Wang , Rui Jiang , Xiangtian Meng , Rongjiang Yao
Coastal saline soil reclamation is critical for global food security, with soil organic carbon (SOC) accumulation being central to rehabilitation. However, the characteristics of SOC under different saline-alkali levels corresponding to various reclamation ages with in-situ crop straw incorporation, and its key components, plant residue carbon (PRC) and microbial necromass carbon (MNC) remain unclear. Using a chronosequence of reclamation durations (0, 3, 5, and 8 years) in Dongtai reclamation area, China, we measured SOC, soil nutrients, enzyme activities, and microbial biomass. Reclamation progressively reduced soil electrical conductivity (EC), while pH declined more gradually. The accumulation of PRC and MNC lagged behind the reduction of EC and pH, following curvilinear patterns. By year 8, SOC in the 0–15 cm and 15–30 cm layers reached 6.30 g kg⁻1 and 6.37 g kg⁻1, representing 62 % and 120 % increases from the year 0, while PRC increased by approximately 500 % in both layers. Fungal necromass carbon (FNC) dominated MNC pool, with FNC/BNC (bacterial necromass carbon) ratios of 7.48 (0–15 cm) and 6.52 (15–30 cm) at year 8, respectively. EC and pH decreased, thus affect enzyme activities and soil nutrients, and SOC sequestration was ultimately promoted. Therefore, long-term reclamation (> 8 years) enhances desalination and SOC storage, substantial SOC gains occur only once soils become non-salinized (EC1:5 < 1 dS m⁻1, pH < 8.5), underscoring EC and pH control as prerequisites for stable SOC sequestration.
海岸带盐碱地复垦对全球粮食安全至关重要,土壤有机碳(SOC)积累是复垦的核心。然而,不同盐碱水平下秸秆还田年限对应的土壤有机碳特征及其关键组分植物残碳(PRC)和微生物尸块碳(MNC)尚不清楚。采用不同垦殖年限(0年、3年、5年和8年)对东台垦殖区土壤有机碳、土壤养分、酶活性和微生物生物量进行了测定。复垦逐渐降低土壤电导率(EC),而pH值下降更为缓慢。PRC和MNC的积累滞后于EC和pH的降低,呈曲线模式。在今年8、SOC 0-15 厘米和15 - 30 cm层达到6.30 g 公斤 ⁻1和6.37 g 公斤⁻1,代表62 %和 %增加从120年0,而中国增加了大约500 %两层。真菌坏死团碳(FNC)在MNC池中占主导地位,FNC/BNC(细菌坏死团碳)比值在第8年分别为7.48(0 ~ 15 cm)和6.52(15 ~ 30 cm)。EC和pH降低,影响酶活性和土壤养分,最终促进有机碳的固存。因此,长期的开垦(>; 8年)增强了海水淡化和有机碳的储存,只有当土壤变成非盐碱化(EC1:5 < 1 dS m - 1, pH < 8.5),才会产生大量的有机碳收益,强调了EC和pH控制是稳定的有机碳封存的先决条件。
{"title":"Long-term reclamation enhances soil organic carbon accumulation via mitigating salinity and alkalinity in coastal saline soils","authors":"Wei Zhu ,&nbsp;Shiguo Gu ,&nbsp;Xin Zhang ,&nbsp;Xuan Yu ,&nbsp;Shuanghuang Yu ,&nbsp;Xiangping Wang ,&nbsp;Rui Jiang ,&nbsp;Xiangtian Meng ,&nbsp;Rongjiang Yao","doi":"10.1016/j.agee.2025.110212","DOIUrl":"10.1016/j.agee.2025.110212","url":null,"abstract":"<div><div>Coastal saline soil reclamation is critical for global food security, with soil organic carbon (SOC) accumulation being central to rehabilitation. However, the characteristics of SOC under different saline-alkali levels corresponding to various reclamation ages with in-situ crop straw incorporation, and its key components, plant residue carbon (PRC) and microbial necromass carbon (MNC) remain unclear. Using a chronosequence of reclamation durations (0, 3, 5, and 8 years) in Dongtai reclamation area, China, we measured SOC, soil nutrients, enzyme activities, and microbial biomass. Reclamation progressively reduced soil electrical conductivity (EC), while pH declined more gradually. The accumulation of PRC and MNC lagged behind the reduction of EC and pH, following curvilinear patterns. By year 8, SOC in the 0–15 cm and 15–30 cm layers reached 6.30 g kg⁻<sup>1</sup> and 6.37 g kg⁻<sup>1</sup>, representing 62 % and 120 % increases from the year 0, while PRC increased by approximately 500 % in both layers. Fungal necromass carbon (FNC) dominated MNC pool, with FNC/BNC (bacterial necromass carbon) ratios of 7.48 (0–15 cm) and 6.52 (15–30 cm) at year 8, respectively. EC and pH decreased, thus affect enzyme activities and soil nutrients, and SOC sequestration was ultimately promoted. Therefore, long-term reclamation (&gt; 8 years) enhances desalination and SOC storage, substantial SOC gains occur only once soils become non-salinized (EC<sub>1:5</sub> &lt; 1 dS m⁻<sup>1</sup>, pH &lt; 8.5), underscoring EC and pH control as prerequisites for stable SOC sequestration.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"400 ","pages":"Article 110212"},"PeriodicalIF":6.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145902259","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-year drought has persistent forage quality and quantity effects that can be intensified by heavy grazing in semiarid rangelands 多年干旱具有持续的牧草质量和数量效应,在半干旱的草地上,重度放牧会加剧这种效应
IF 6.4 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-04-15 Epub Date: 2026-01-23 DOI: 10.1016/j.agee.2026.110231
Lauren M. Porensky , Sally E. Koerner , Amanda R. Williams , Megan L. Van Emon , Kevin R. Wilcox , Kimberly J. Komatsu , John D. Dietrich , Kurt O. Reinhart
Growing season droughts have major impacts on grassland vegetation and are predicted to become increasingly frequent in semiarid rangelands, but little is known about how droughts and post-drought legacies interact with grazing management to affect forage quality and quantity. In two semiarid prairie rangelands, we assessed the separate and combined effects of experimental rainfall reductions and grazing management strategies on ruminant forage quality and quantity over five years. We measured forage fiber content, organic matter digestibility, relative feed value, forage quantity, and the quantity of digestible forage. During a 2-year experimental rainfall reduction period, rainfall reductions decreased both forage quality and quantity at one site. At the second site, reductions were only apparent in heavily grazed plots. In the first year after experimental rainfall reduction treatments ended, plots that formerly received large rainfall reductions displayed strong legacy effects, with 26–57 % less digestible forage biomass but greater forage quality than controls. Increases in forage quality with former rainfall reduction treatments were strongest in plots that had received heavier grazing during the experimental drought period. Experimental treatments did not induce long-term changes in forage quantity, but rainfall reductions caused forage quality reductions that persisted up to three years after droughts ended. In contrast, grazing treatments did not have long-term effects on forage quality. Our results highlight that forage production capacity in North American grasslands is resilient to both drought stress and grazing disturbance, but these drivers can have additive and long-term effects on forage nutritive value. Heavy grazing during drought may strengthen both negative (during drought) and positive (post-drought) effects of drought on ungulate nutrition.
生长季干旱对草地植被有重大影响,预计将在半干旱牧场变得越来越频繁,但关于干旱和干旱后遗产如何与放牧管理相互作用,影响饲料质量和数量,我们知之甚少。在2个半干旱草原放牧区,研究了5年试验降水减少和放牧管理策略对反刍动物饲料质量和数量的单独和联合影响。测定了饲料纤维含量、有机质消化率、相对饲料价值、饲料量和可消化饲料量。在2年的试验减雨期内,一个试验点的牧草质量和数量均下降。在第二个地点,减少只在大量放牧的地块上明显。在试验减雨处理结束后的第一年,以前大量减雨的地块表现出强烈的遗留效应,可消化的饲料生物量比对照低26-57 %,但饲料质量比对照高。在试验干旱期放牧较重的地块,前减雨处理对牧草质量的提高最大。试验处理没有引起饲料数量的长期变化,但降雨减少导致饲料质量下降,这种下降持续到干旱结束后的三年。相比之下,放牧处理对牧草质量没有长期影响。我们的研究结果表明,北美草原的牧草生产能力对干旱胁迫和放牧干扰都具有弹性,但这些驱动因素可能对牧草营养价值具有附加性和长期影响。干旱期间的大量放牧可能会加强干旱对有蹄类动物营养的消极(干旱期间)和积极(干旱后)影响。
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引用次数: 0
Managed fly pollinators ensure berry crop yields under variable weather conditions 有管理的苍蝇传粉者确保在多变的天气条件下浆果作物的产量
IF 6.4 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-04-15 Epub Date: 2026-01-22 DOI: 10.1016/j.agee.2026.110254
Abby E. Davis , Raylea Rowbottom , Lena A. Schmidt , Jelena Preradovic , Karen C.B.S. Santos , Blake M. Dawson , Mavi Manrique , Derek Wright , Bar Shermeister , Brad Hocking , Joao Branco , Maurizio Rocchetti , Cameron Spurr , Romina Rader
Insect pollination is essential for global fruit and vegetable production, yet rising climate variability and widespread declines in bee populations threaten the reliability of this service. Flies (Diptera), despite their abundance and tolerance to different environmental conditions, remain largely overlooked as managed pollinators in agriculture. Here, we present field-based evidence from commercial farms in Australia showing that certain fly species can deliver effective and climate-resilient pollination services to high-value berry cropping systems. In replicated cage trials, European hover flies (Eristalis tenax) produced fruit comparable in weight and marketability to those pollinated by European honey bees (Apis mellifera) and Australian native stingless bees (Tetragonula carbonaria), whereas brown blow flies (Calliphora stygia) showed more variable performance. When scaled to full-sized commercial polytunnels, hover flies consistently produced market-quality blackberry fruit, matching open (mainly bee) pollination in spring and outperforming open pollination under the cooler, more variable conditions of winter. Hover fly-pollinated fruit equaled or exceeded the quality of hand-pollinated flowers and consistently outperformed self-pollinated controls. Across spring and winter floral visitation field surveys, hover flies maintained higher flower visitation than honey bees across cooler temperatures, broader humidity ranges, and early tomidday time periods, indicating greater climatic tolerance under field conditions. Together, these findings demonstrate that the hover fly, E. tenax, can provide scalable, climate-resilient pollination services and highlight the value of integrating flies into diversified pollination strategies to support resilient crop production under a changing climate.
昆虫授粉对全球水果和蔬菜生产至关重要,但气候变化的加剧和蜜蜂种群的广泛减少威胁着这一服务的可靠性。蝇类(双翅目)尽管数量丰富且对不同环境条件具有耐受性,但在农业中作为有管理的传粉媒介在很大程度上仍被忽视。在这里,我们提出了来自澳大利亚商业农场的实地证据,表明某些苍蝇物种可以为高价值浆果种植系统提供有效和气候适应性的授粉服务。在重复的笼子试验中,欧洲悬飞蝇(Eristalis tenax)结出的果实在重量和适销性上与欧洲蜜蜂(Apis mellifera)和澳大利亚本土无刺蜜蜂(Tetragonula carbonaria)授粉的果实相当,而褐飞蝇(Calliphora stygia)表现出更大的差异。当扩大到全尺寸的商业多通道时,盘旋蝇始终生产市场质量的黑莓果实,在春季与开放式(主要是蜜蜂)授粉相匹配,在冬季更凉爽,更多变的条件下优于开放式授粉。悬停蝇授粉的水果等于或超过了手授粉的花的质量,并始终优于自花授粉的对照。在春季和冬季的访花现场调查中,悬停蝇在较低的温度、较宽的湿度范围和午后时段比蜜蜂保持更高的访花量,表明在田间条件下具有更大的气候耐受性。总之,这些研究结果表明,悬飞蝇(E. tenax)可以提供可扩展的、气候适应性强的授粉服务,并突出了将苍蝇纳入多样化授粉策略的价值,以支持气候变化下的弹性作物生产。
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引用次数: 0
Impacts of long-term fertilizer reduction and organic substitution on microbe-mediated multi-nutrient in agricultural ecosystems 长期减肥和有机替代对农业生态系统微生物介导的多养分的影响
IF 6.4 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-04-15 Epub Date: 2026-01-15 DOI: 10.1016/j.agee.2026.110237
Zhenling Li , Jiawei Ying , Xiaokang He , Yangyang Li , Guangchun Shan , Chenghong Feng , Mingjun Ding , Gaoxiang Huang , Jia Liu
Organic amendment addition represents one of the most effective soil organic matter (SOM) sequestration strategies, faced with the dilemma of deepening organic carbon losses due to increased agricultural intensification. However, little is known regarding the impacts of long-term fertilizer reduction and organic substitution on microbe-mediated multi-nutrient (C, N, P, S) in agricultural ecosystems, especially with the alternation of green manure and manure application. Here, the responses of soil physicochemical properties, microbial community structure, and nutrient cycling processes to the application of fertilizer reduction and organic substitution were investigated with metagenome analysis. The results indicated that the content of SOM, pH, available phosphorus, total nitrogen and cation exchange capacity in soils with organic and chemical fertilizer combinations exhibited a significant increase (p < 0.05) compared to soil with chemical fertilizer alone. These drove significant differences in microbial community structure and enrichment in specific archaeal and bacterial groups. Additionally, chemical fertilizer reduction and organic substitution can alter soil nutrient cycling. Specifically, carbon fixation through the Wood-Ljungdahl Pathway was significantly stimulated (p < 0.05) while methanogenesis was significantly inhibited (p < 0.05). The abundance of functional genes responsible for the oxidative generation of sulfate was significantly suppressed (p < 0.05). Notably, organic fertilizers significantly enhance the potential of microorganisms to inorganic phosphorus solubilization and organic phosphorus mineralization while significantly inhibiting their potential for nitrogen fixation and nitrification. The findings underpin a scientific comprehension of agroecosystem health and eco-agriculture.
随着农业集约化程度的提高,土壤有机碳流失加剧,添加有机改良剂是最有效的土壤有机质封存策略之一。然而,长期减肥和有机替代对农业生态系统中微生物介导的多养分(C, N, P, S)的影响,特别是绿肥和粪肥交替施用的影响知之甚少。通过宏基因组分析,研究了土壤理化性质、微生物群落结构和养分循环过程对减肥和有机替代施用的响应。结果表明,有机肥与化肥组合施用土壤的SOM、pH、速效磷、全氮含量和阳离子交换容量均显著高于单施化肥(p <; 0.05)。这导致了特定古细菌和细菌群的微生物群落结构和富集程度的显著差异。此外,化肥减量和有机替代可以改变土壤养分循环。其中,通过Wood-Ljungdahl途径的固碳被显著刺激(p <; 0.05),而产甲烷被显著抑制(p <; 0.05)。硫酸盐氧化生成相关功能基因的丰度被显著抑制(p <; 0.05)。值得注意的是,有机肥显著增强了微生物对无机磷的增溶和有机磷的矿化潜力,而显著抑制了微生物的固氮和硝化潜力。这些发现为科学理解农业生态系统健康和生态农业奠定了基础。
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引用次数: 0
Impacts of carbon farming practices on biodiversity at the farm scale 碳耕作方式对农场规模生物多样性的影响
IF 6.4 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-04-15 Epub Date: 2026-01-17 DOI: 10.1016/j.agee.2026.110230
Hanna Susi , Paula Thitz , Marleena Hagner , Krista Raveala , Johan Ekroos , Anna-Liisa Laine
Biodiversity loss from intensive agriculture poses a major threat to the long-term sustainability and resilience of food production systems. Sustainable land management practices, such as carbon farming, offer promising alternatives, but their biodiversity impacts and the most effective methods for detecting these impacts remain poorly understood. We surveyed 19 farms in boreal Finland to assess the effects of four carbon farming practices—cover crops, all-in mixes, adaptive grazing and ley mixtures—on plants, arthropods, nematodes and birds. We evaluated biodiversity responses using four alpha diversity metrics (abundance, species richness, Shannon’s diversity and Pielou’s evenness) and two beta diversity metrics (Bray–Curtis and Chi-square dissimilarity). Biodiversity responses were strongly context-dependent, varying by farming practice, taxonomic group and diversity metric. Abundance emerged as the most sensitive alpha metric across taxa, often detecting changes not reflected in community composition metrics. These findings suggest that abundance may serve as a useful early indicator of ecological change in managed landscapes. Adaptive grazing increased herbivorous arthropod abundance in contrast to control treatment, whereas ley mixture and adaptive grazing supported higher nematode abundances than cover crops and all-in mixes. All diversity metrics except species richness detected changes in at least one species group, practice or field status, but abundance consistently captured the broadest responses. Carbon farming practices can support biodiversity when tailored to species group and context. Monitoring approaches that incorporate multiple metrics—and prioritize abundance as a sensitive and early indicator—can improve the detection of ecological responses to sustainable farming interventions.
集约化农业造成的生物多样性丧失对粮食生产系统的长期可持续性和复原力构成重大威胁。可持续土地管理实践,如碳农业,提供了有希望的替代方案,但它们对生物多样性的影响以及检测这些影响的最有效方法仍然知之甚少。我们调查了芬兰北部的19个农场,以评估四种碳农业实践——覆盖作物、全混合、适应性放牧和禾草混合——对植物、节肢动物、线虫和鸟类的影响。我们使用4个alpha多样性指标(丰度、物种丰富度、Shannon多样性和Pielou均匀度)和2个beta多样性指标(bry - curtis和Chi-square不相似度)来评估生物多样性响应。生物多样性响应强烈依赖于环境,因耕作方式、分类类群和多样性指标而异。丰度是整个分类群中最敏感的alpha度量,经常检测到未反映在群落组成度量中的变化。这些发现表明,丰度可以作为管理景观中生态变化的有用早期指标。与对照处理相比,适应性放牧增加了草食性节肢动物的丰度,而禾草混合和适应性放牧比覆盖作物和全播混合支持更高的线虫丰度。除了物种丰富度外,所有多样性指标都至少在一个物种群、实践或野外状态中发现了变化,但丰度始终捕获了最广泛的响应。如果根据物种群和环境进行调整,碳农业实践可以支持生物多样性。结合多种指标的监测方法——优先考虑丰度作为一个敏感的早期指标——可以改善对可持续农业干预的生态反应的检测。
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引用次数: 0
Beetle communities in agricultural landscapes: relative influences of climate, landscape, plant communities and agricultural practices 农业景观中的甲虫群落:气候、景观、植物群落和农业实践的相对影响
IF 6.4 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-04-15 Epub Date: 2026-01-20 DOI: 10.1016/j.agee.2026.110252
B. Penel , L. Genty , C. Marty , A. Bourdonné , A.-L. Clamens , L. Benoit , L. Soldati , A. Migeon , G.J. Kergoat , J. Haran , G. Fried , C.N. Meynard
Agricultural field margins are semi-natural habitats that play a key role in conservation and restoration, supporting threatened biodiversity of agroecosystems. However, most research on field margin biodiversity has focused on plant communities, while insect populations remain largely understudied. To address this gap, we leveraged a national monitoring network across France to provide a comprehensive taxonomic and functional characterisation of beetles, a highly diverse insect group of significant agricultural interest. We examined how climate, landscape, vegetation and agricultural practices influence the structure of field margin beetle communities. Using a combination of molecular and morphological approaches and multivariate analyses, we investigated beetle communities within the herbaceous field margins of 374 agricultural sites across continental France sampled between 2020 and 2023. Our surveys revealed a high diversity of beetles, with 797 species recorded, including hundreds of flower visitors and auxiliary species. Estimates based on accumulation curves suggest a richness of up to 1200 species, corresponding to approximately 10 % of the French beetle fauna. We also identified five community types, each having specific taxonomic and functional characteristics and associated with specific climatic, soil, landscape and agricultural environments. While large-scale climatic gradients were the main drivers shaping these community types, local vegetation played a key role in determining species richness. By contrast, agricultural practices appear to be an important structuring factor for both community types and richness. Finally, this study provides the first in-depth characterisation of beetle communities in French field margins, offering a solid baseline for future research and improving our understanding of the complex interactions among climatic, landscape, vegetation, and agricultural drivers.
农田边缘是半自然栖息地,在保护和恢复中发挥关键作用,支持受威胁的农业生态系统生物多样性。然而,对野外边缘生物多样性的研究大多集中在植物群落上,而对昆虫种群的研究还远远不够。为了解决这一差距,我们利用法国全国监测网络提供甲虫的全面分类和功能特征,甲虫是一种高度多样化的昆虫群体,具有重要的农业利益。研究了气候、景观、植被和农业实践对田间边缘甲虫群落结构的影响。采用分子和形态学方法以及多变量分析相结合的方法,研究了2020年至2023年间法国大陆374个农业样地草本田边缘的甲虫群落。我们的调查显示,甲虫的多样性很高,记录了797种,其中包括数百种花卉访客和辅助物种。根据累积曲线估计,其丰富度可达1200种,约占法国甲虫动物群的10. %。我们还确定了5种群落类型,每种类型都具有特定的分类和功能特征,并与特定的气候、土壤、景观和农业环境有关。虽然大尺度气候梯度是形成这些群落类型的主要驱动因素,但当地植被在决定物种丰富度方面发挥了关键作用。相比之下,农业实践似乎是群落类型和丰富度的重要结构因素。最后,本研究首次对法国田间边缘的甲虫群落进行了深入的描述,为未来的研究提供了坚实的基础,并提高了我们对气候、景观、植被和农业驱动因素之间复杂相互作用的理解。
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引用次数: 0
Effects of soil management intensity and soil type on the community assembly and functional potential of soil phosphorus cycling microbes 土壤管理强度和土壤类型对土壤磷循环微生物群落组成和功能势的影响
IF 6.4 1区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-04-15 Epub Date: 2026-01-13 DOI: 10.1016/j.agee.2026.110236
Xianwen Long , Xionghui Liao , Jiangnan Li , Wenjun Zhang , Jiachen Wang , Wei Zhang , Kelin Wang , Jie Zhao
Revealing the community assembly process of soil phosphorus (P) cycling microbes is conducive to a better understanding of soil P-cycling processes in agricultural ecosystems. Previous studies have documented that soil microbial diversity or community composition drives soil P cycling. However, little is known about how agricultural management intensity and soil type affect community assembly processes of P-cycling microbes and the related microbial functional potential. Here, four typical agricultural land use types with a gradient of management intensity in both calcareous and red soils were selected in southwest China, including pasture, sugarcane farmland, rice paddy fields, and maize cropland (from low to high management intensity). The results showed that the abundance of the total P-cycling, P-solubilization, P-mineralization, and P-transporter gene in calcareous soil was significantly higher than that in red soil. Agricultural management practice and soil type significantly affected the P-cycling microbial community structure, with tillage frequency, herbicide application frequency, and soil pH being the main influencing factors. Stochastic processes dominated the P-cycling microbial community assembly in both calcareous and red soils, and the stochastic processes were more predominant in calcareous soil than in red soil. The relative importance of stochastic assembly processes increased with agricultural management intensity. In particular, fertilization frequency, pesticide, and herbicide application frequency were the key predictors of stochastic processes of P-cycling microbes. Intensive agricultural management reduced the abundance of total P-cycling, P-solubilization, and P-transporter functional genes across different land use types and soil types but promoted the abundance of P-starvation regulation genes. In particular, we found that the relationship between taxonomic and functional diversity of P-cycling microbes was controlled by deterministic factors (e.g., soil pH and TP), and high stochastic processes will decouple the relationship between the taxonomic and functional diversity of P-cycling microbes. Overall, these findings strengthen our understanding of the community structure and functional potential of P-cycling microbes under different soil types and agricultural management practices.
揭示土壤磷循环微生物群落组装过程有助于更好地理解农业生态系统土壤磷循环过程。以往的研究表明,土壤微生物多样性或群落组成驱动土壤磷循环。然而,农业管理强度和土壤类型对磷循环微生物群落组装过程和相关微生物功能潜力的影响尚不清楚。本文选取了西南地区钙质和红壤4种典型农业用地类型,分别为牧场、甘蔗田、稻田和玉米田(从低到高管理强度)。结果表明:钙质土壤全磷循环、全磷增溶、全磷矿化和全磷转运基因丰度显著高于红壤;农业管理方式和土壤类型显著影响磷循环微生物群落结构,以耕作频率、除草剂施用频率和土壤pH值为主要影响因素。随机过程在钙质土和红壤中均占主导地位,且随机过程在钙质土中比在红壤中更占优势。随机装配过程的相对重要性随着农业经营强度的增加而增加。其中,施肥频率、农药和除草剂使用频率是磷循环微生物随机过程的关键预测因子。集约化农业管理降低了全磷循环、全磷溶解和全磷转运功能基因在不同土地利用类型和土壤类型中的丰度,但提高了缺磷调控基因的丰度。特别是,我们发现磷循环微生物的分类多样性和功能多样性之间的关系受到确定性因素(如土壤pH和TP)的控制,高度随机过程将解耦磷循环微生物的分类多样性和功能多样性之间的关系。总的来说,这些发现加强了我们对不同土壤类型和农业管理措施下磷循环微生物群落结构和功能潜力的认识。
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