Global Change Biology Bioenergy最新文献

{"title":"Yield From Iowa's First Commercial Miscanthus Fields: Implications of Spatial Variability for Productivity and Sustainability Beyond Research Plots","authors":"Shah-Al Emran,&nbsp;Bryan M. Petersen,&nbsp;Heather Elizabeth Roney,&nbsp;Michael David Masters,&nbsp;Sebastian Varela,&nbsp;Travis Hedrick,&nbsp;Andrew D. B. Leakey,&nbsp;Andy VanLoocke,&nbsp;Emily A. Heaton","doi":"10.1111/gcbb.70094","DOIUrl":"https://doi.org/10.1111/gcbb.70094","url":null,"abstract":"<p>The cultivation of sterile giant miscanthus (<i>Miscanthus × giganteus</i>, <i>M × g</i>) for bioenergy and bioproducts has expanded into grain-cropped land in the United States (US) as local markets developed for this high-yielding perennial grass (10–30 Mg DM ha⁻¹). However, the magnitude of spatial and temporal variability in yield within US Corn Belt fields, along with impacts on economic return and sustainable land management, is poorly understood. This study established a diagnostic model relating remote sensing-derived vegetation indices to ground truth data from 105 hand-harvested stem biomass samples, which were strategically selected to represent the full range of vegetation index observations. The high-resolution satellite-sensed vegetation indices captured &gt; 90% of the yield variation measured within fields. This model was then used to predict yield variability and assess economic performance across four of the first commercial <i>M × g</i> fields in the Corn Belt state of Iowa, US. Significant spatial variability in biomass dry matter (DM) yields (9.3–18.1 Mg DM ha⁻¹) and net profits ($83 to $1211.5 ha⁻¹) was observed. All fields were profitable in all site-years. When low profit occurred, it was explained by limited management experience of the crop in Iowa. The breakeven yield at a selling price of $130 Mg⁻¹ varied from 9.0–12.1 Mg ha⁻¹ at 15% moisture content (7.6–10.3 Mg DM ha⁻¹). Breakeven prices ranged from $73 to $122.4 Mg⁻¹, matching ranges used in the Department of Energy Billion Ton Report (US Department of Energy, 2023). Notably, <i>M × g</i> yield and profits were commensurate with grain crops particularly with favorable precipitation. This study provides insight on the <i>M × g</i> management “learning curve”, performance on marginal land and in drought conditions, and demonstrates that addressing yield gaps, reducing costs, and implementing precision agriculture strategies can enhance profitability. These findings emphasize the value of remote sensing technologies in guiding sustainable and competitive commercial-scale <i>M × g</i> production.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70094","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Switchgrass Steroidal Saponins Reduce Fungal Disease but Decrease Yeast Fermentation Yield","authors":"Acer VanWallendael,&nbsp;Xingxing Li,&nbsp;Dan Xie,&nbsp;Kallysa Taylor,&nbsp;Evan Handowski,&nbsp;Jose Serate,&nbsp;Lillian M. Barten,&nbsp;Yaoping Zhang,&nbsp;Kurt Thelen,&nbsp;Robert L. Last,&nbsp;Trey K. Sato,&nbsp;David B. Lowry","doi":"10.1111/gcbb.70097","DOIUrl":"https://doi.org/10.1111/gcbb.70097","url":null,"abstract":"<p>Increasing the production of bioproducts from lignocellulosic feedstocks requires improvement in both field production and biorefinery efficiency. When plant traits arise that improve field production but decrease biofuel yield, these trade-offs can represent challenges in the entire production process. To examine trade-offs between field and production traits, we examined factors underlying switchgrass resistance to fungal rust pathogens in field conditions and factors that impede yeast fermentation in the lab using repeated measurements on a switchgrass genetic diversity panel. We found that the same switchgrass genotypes that showed high fungal pathogen resistance also showed recalcitrance to yeast fermentation. These switchgrass genotypes were mostly from the Atlantic genetic group, which had high levels of specialized metabolites of the saponin class. Among 1589 metabolites identified through metabolomics, we found that saponins were among the most likely to explain variation in both rust infection and fermentation yield using random forest feature selection, and that only four of these were sufficient to explain 57.9% of the variation in rust susceptibility. Through follow-up testing in recalcitrant biomass, we found that the bacterium <i>Zymomonas mobilis</i> does not suffer the same inhibition as the yeast <i>Saccharomyces cerevisiae</i>, and that the addition of ergosterol (thought to be the fungal cellular target of saponin inhibition) rescues yeast fermentation. Several lines of evidence point to a central role for saponins as key metabolites protecting switchgrass from fungal pathogens and interfering with yeast fermentation, underscoring an ongoing need for collaboration between plant breeders and biofuel production scientists.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70097","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145694989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Supply Potential and Cost of Residual Forest Biomass for New Industrial Applications in Sweden","authors":"Sebastian Karlsson,&nbsp;Anders Eriksson,&nbsp;Raul Fernandez-Lacruz,&nbsp;Johanna Beiron,&nbsp;Fredrik Normann,&nbsp;Filip Johnsson","doi":"10.1111/gcbb.70098","DOIUrl":"https://doi.org/10.1111/gcbb.70098","url":null,"abstract":"<p>This work investigates the potential for logging residues (branches and tops that can be extracted during roundwood harvesting) to replace fossil-based feedstocks and energy use in industry, using Sweden as a case study. National and regional supply–demand balances are calculated and costs for extraction and transportation of logging residues to current and future users are estimated. The results show that there is an excess of unutilized logging residues in northern Sweden (just below 10 TWh/y), while the supply potential is already utilized in the south. In southern Sweden, the use of logging residues for district heating is extensive, while simultaneously, the refinery industry is undergoing a transition to renewable feedstocks. This creates a gap between the regional supply and demand of around 15 TWh/year going into the future. Meanwhile, the middle and northern parts of Sweden could be largely self-sufficient and rely on regional logging residues to supply the estimated future biomass demands of around 9 TWh/y. Thus, a regional supply–demand imbalance can be expected in the future, where the excess resource is located in the north, while large demands are expected in the south. With current utilization patterns, the costs for logging residue extraction and transportation are around 50% higher in the north than in the south of Sweden, mainly attributable to the shorter transportation distances. To supply refineries with logging residue-based feedstock from northern Sweden, costs for transportation can be reduced by about 5–10 €/MWh utilizing distributed methanol synthesis before long-distance ship and train transportation. However, the transportation cost reduction is small compared to the cost of the methanol synthesis step, highlighting that the added value for the refinery of receiving methanol compared to chipped logging residues needs to make up the difference to motivate a supply chain based on distributed methanol synthesis.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"18 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70098","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145695072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trends and Advancements in Utilization of Biomass Waste for Gasification: A Bibliometric Review","authors":"Kunmi Joshua Abioye,&nbsp;Noorfidza Yub Harun,&nbsp;Abdoulmohammad Gholamzadeh Chofreh,&nbsp;Hesam Kamyab,&nbsp;Mohammad Yusuf,&nbsp;Ahmad Hussaini Jagaba,&nbsp;Abdullateef O. Balogun,&nbsp;Bamidele Victor Ayodele,&nbsp;Joshua O. Ighalo","doi":"10.1111/gcbb.70095","DOIUrl":"https://doi.org/10.1111/gcbb.70095","url":null,"abstract":"<p>Biomass waste gasification is widely recognized as a sustainable and efficient method for converting organic waste into valuable energy, making it a focal point in global research. This study conducts a bibliometric analysis of publications related to this field, focusing on articles indexed in the Elsevier Scopus database from 1977 to 2023 using search terms “biomass waste,” “biomass residue,” “waste biomass,” and “gasification”. Initially, 981 articles were identified, with subsequent refined analyses narrowing the focus to 592 publications, using VOSviewer for in-depth examination. The analysis revealed that the year 2023 saw the highest publication count with 73 articles, followed by the year 2022 and the year 2020, with 61 and 54 articles, respectively. China, the USA, and India emerged as the leading contributors, accounting for 9.68%, 7.07%, and 6.75% of the total publications, respectively. Top institutions by citations are the University of Saskatchewan (259), Hamad Bin Khalifa University (169), and Paul Scherrer Institut (113). The most prolific researchers in the field include Gulyurtlu, I., Cabrita, I., and Dalai, Ajay K., with citation counts of 1296, 1290, and 1020, respectively. The journals <i>Energy</i>, <i>Fuel</i>, and <i>Energies</i> were identified as authors' most preferred publishing choice with 26, 23, and 22 publications, respectively. The keywords “Gasification,” “Biomass,” and “Syngas” were the most frequently occurring, with 194, 147, and 52 occurrences. Keyword analysis also revealed five thematic clusters. These findings offer a detailed overview of the research landscape in biomass waste gasification, emphasizing key contributors, emerging trends, and thematic areas, providing valuable insights for guiding future research in this domain.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"17 12","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145626033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Influence of Biodegradability and Inoculum-to-Substrate Ratio on the Anaerobic Digestion Performance and Microbial Diversity","authors":"Marvin T. Valentin,&nbsp;Katarzyna Ewa Kosiorowska,&nbsp;Agata Siedlecka,&nbsp;Kacper Świechowski,&nbsp;Vitalii Demeshkant,&nbsp;Paweł Wiercik,&nbsp;Svetlana Ashikhmina,&nbsp;Tomasz Strzała,&nbsp;Andrzej Białowiec","doi":"10.1111/gcbb.70090","DOIUrl":"https://doi.org/10.1111/gcbb.70090","url":null,"abstract":"<p>Continuous-flow anaerobic digestion (AD) of wheat straw (WS) is often limited by volatile fatty acid (VFA) accumulation at low inoculum-to-substrate ratios (ISRs). Here, biochar (8.0 g/L) recovered methane production in overloaded systems (ISR 0.5, HRT 12 days), increasing yields by 658.45 mL/g-VS. Microbial analysis revealed a shift from <i>Methanomicrobiaceae</i> to <i>Methanosarcinaceae</i> dominance upon biochar addition, correlating with <i>mcr</i>A gene upregulation. This strategy enhances the AD of refractory feedstocks without diluting the organic load. The results offer insights into optimizing biogas systems treating low-biodegradability feedstocks at low ISRs, highlighting biochar's potential to stabilize performance and enrich functional microbial communities under stress conditions.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"17 12","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70090","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145530153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamics of Miscanthus spp. Overwinter Leaf Litter Drop and Decomposition","authors":"Jon McCalmont,&nbsp;Sarah Hawkins,&nbsp;Jack Davies,&nbsp;Amanda Holder,&nbsp;Iain S. Donnison,&nbsp;Kerrie Farrar","doi":"10.1111/gcbb.70091","DOIUrl":"https://doi.org/10.1111/gcbb.70091","url":null,"abstract":"<p>Perennial biomass crops represent a rapidly deployable technology to contribute to climate change mitigation, both reducing greenhouse gas emissions through providing alternative energy sources to fossil fuels, and direct photosynthetic removal of CO₂ from the atmosphere and sequestration into biomass and soil organic carbon (SOC). The giant perennial grass, <i>Miscanthus</i> × <i>giganteus</i> is one of the leading commercial crops currently deployed at scale, with its associated overwinter leaf litter production and decomposition providing a key pathway to SOC sequestration. However, challenges in the scalability of propagative material from this sterile, naturally occurring hybrid have led to great interest from breeding programs to develop novel varieties better suited to replication and specific end-use requirements. This study compares leaf litter production and decomposition from six Miscanthus genotypes to better understand their comparative potential contribution to carbon cycling across a range of morphologies. Our results showed that, despite genotypic differences in growing season leaf production, differences in overwinter retention rates resulted in similar absolute amounts being dropped to the ground, excepting <i>M.</i> × <i>sinensis</i> (our <i>sinensis</i> × <i>sinensis</i> hybrid) which both produced and dropped significantly greater litter material than the other genotypes, 14.9 Mg DM ha⁻¹ compared with an average across the other genotypes of 2.8 Mg ha⁻¹, and was associated with one of the lowest decomposition rates. Major shifts in the litter microbiome were observed during the first 6 months of decomposition with important plant material decomposers likely migrating from soil communities; these changes appeared to be statistically consistent across all genotypes. Excepting <i>M.</i> × <i>sinensis</i>, the relative consistency of litter production suggests that breeding programs may focus on yields without paying a penalty in leaf carbon cycling, though if outright leaf litter production for carbon sequestration and soil surface protection were the primary goal, <i>M.</i> × <i>sinensis</i> may represent an optimal choice.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"17 12","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70091","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145529881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From Stress to Recovery: Divergent Chilling Responses in Contrasting Miscanthus sinensis Genotypes","authors":"Karolina Sobańska,&nbsp;Katarzyna Głowacka,&nbsp;Paweł Krajewski,&nbsp;Estera Wojtkowiak,&nbsp;Maria Nuc,&nbsp;Aneta Basińska-Barczak,&nbsp;Katarzyna B. Czyż,&nbsp;Piotr Waligórski,&nbsp;Dariusz Kruszka,&nbsp;Elżbieta Gabała,&nbsp;Adam Grzywaczyk,&nbsp;Magdalena Zborowska,&nbsp;Agnieszka Drożdżyńska,&nbsp;Monika Mokrzycka,&nbsp;Grzegorz Koczyk,&nbsp;Joanna Cerazy-Waliszewska,&nbsp;Anna Milewska-Hendel,&nbsp;Alexander Betekhtin,&nbsp;Tomasz Pniewski","doi":"10.1111/gcbb.70087","DOIUrl":"https://doi.org/10.1111/gcbb.70087","url":null,"abstract":"<p>Chilling temperatures are a major constraint on the early-season performance of C₄ bioenergy crops in temperate regions. To dissect the temporal architecture of chilling resilience, we conducted an integrative, time-resolved analysis of two <i>Miscanthus sinensis</i> genotypes contrasting in chilling tolerance, Ms12 (LCT) and Ms16 (HCT). Through stepwise chilling and recovery treatments, we profiled genotype-specific changes in shoot physiology, hormone accumulation, gene expression, and importantly cell wall composition, a key yet understudied determinant of chilling resilience in perennial grasses. The high chilling-tolerant genotype (HCT) maintained its shoot growth, photosynthetic performance, and membrane stability by activating a delayed but sustained program involving secondary wall reinforcement, ABA–JA hormonal crosstalk, and raffinose family oligosaccharide (RFO) accumulation in response to the extreme conditions. While, low chilling-tolerant genotype (LCT) initiated a rapid transcriptional and hormonal response, which lacked persistence and failed to support structural recovery or metabolic buffering. In-depth transcriptomic profiling revealed divergent dynamics between studied genotypes. The LCT genotype mounted an early transcriptional burst, while the HCT genotype showed prolonged induction of the cell wall biosynthesis, energy metabolism, and stress-response genes. FTIR (Fourier-transform infrared spectroscopy) and sugar quantification confirmed genotype-specific remodeling of cell wall polymers. Moreover, hormone profiling showed that only the HCT genotype sustained ABA and JA signaling through the recovery process. RFOs accumulation, tightly linked to transcriptional activation of GolS (galactinol synthase) and RS (raffinose synthase) genes, was also more pronounced in the HCT genotype. Our findings demonstrate that chilling resilience in <i>M. sinensis</i> depends not on early response magnitude, but on the integration and temporal coordination of stress mitigation and recovery pathways. This work establishes a multiscale framework for identifying traits and regulatory modules underpinning chilling tolerance in perennial grasses, with direct relevance to climate-resilient biomass plant breeding.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"17 12","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145529879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparing GHG Emissions of Residue-Based BECCS to Alternative Biomass Uses","authors":"Susan Caroline Alvarado Cummings,&nbsp;Martin Junginger,&nbsp;Steef V. Hanssen,&nbsp;Floor van der Hilst,&nbsp;Anna Sarah Duden","doi":"10.1111/gcbb.70089","DOIUrl":"https://doi.org/10.1111/gcbb.70089","url":null,"abstract":"<p>Bioenergy with carbon capture and storage (BECCS) holds promise for achieving negative greenhouse gas (GHG) emissions while generating electricity. When using forestry or agricultural residues as feedstock, BECCS may also avoid or reduce land-use based impacts compared to dedicated energy crops. It is, however, unclear how negative emissions from residue-based BECCS compare to alternative uses (bioenergy with no CCS, 2G ethanol, paper and boards, animal feed and decomposition) and how quickly BECCS can achieve climate benefits compared to these other uses. In this study, we used life-cycle assessment (LCA) to quantify supply chain emissions of BECCS for two power plants in the Netherlands, using residue-based wood pellets from Louisiana, USA, and sugarcane bagasse pellets from Louisiana and São Paulo, Brazil, as feedstock. Using an attributional LCA approach, we showed that the two BECCS plants combined use 7.5 Mt of biomass_dry per year. This system generates between 10.3 and 11.1 TWh of electricity and provides 11.0 and 11.3 Mt CO₂-eq. of negative emissions annually, for wood or bagasse, respectively. This results in a footprint of −0.63 (wood) and −0.65 (bagasse) t CO₂-eq./t_{wet biomass}. Following a consequential approach, we contrasted the GHG emissions per tonne of biomass residue used for BECCS with those associated with alternative uses, accounting for the (avoided) emissions from any substituted products and electricity. Here, BECCS negative emissions of approximately −0.6 t CO₂-eq./t_{wet biomass} compare favourably to emissions of alternative uses, which range from −0.3 to +0.12 t CO₂-eq./t_{wet biomass}. This study showed BECCS' potential for achieving negative emissions and climate benefits compared to other biomass uses.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"17 12","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70089","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145529751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biochar Permanence—A Policy Commentary","authors":"Hans-Peter Schmidt,&nbsp;Samuel Abiven,&nbsp;Annette Cowie,&nbsp;Bruno Glaser,&nbsp;Stephen Joseph,&nbsp;Claudia Kammann,&nbsp;Johannes Lehmann,&nbsp;Jens Leifeld,&nbsp;Genxing Pan,&nbsp;Daniel Rasse,&nbsp;Cornelia Rumpel,&nbsp;Dominic Woolf,&nbsp;Andrew R. Zimmerman,&nbsp;Nikolas Hagemann","doi":"10.1111/gcbb.70092","DOIUrl":"https://doi.org/10.1111/gcbb.70092","url":null,"abstract":"<p>\u0000 \u0000 </p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"17 12","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145529805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Switchgrass (Panicum Virgatum) and Miscanthus (Miscanthus × Giganteus) Long-Term Yield Patterns Reveal Consistent Productivity Declines","authors":"Mauricio D. Tejera-Nieves,&nbsp;S. Carolina Córdova,&nbsp;Molly Sears,&nbsp;Kurt D. Thelen,&nbsp;G. Philip Robertson,&nbsp;Berkley J. Walker","doi":"10.1111/gcbb.70088","DOIUrl":"https://doi.org/10.1111/gcbb.70088","url":null,"abstract":"<p>Perennial grasses like switchgrass (<i>Panicum virgatum</i>) and miscanthus (<i>Miscanthus</i> × <i>giganteus</i>) are expected to supply a substantial amount of the United States bioeconomy's feedstock demand. However, uncertainties around their long-term yields challenge the viability of their potential and limit their wider adoption. To resolve their long-term yield patterns, we analyzed over 200 plantings of switchgrass and miscanthus across Michigan and Wisconsin, USA, measured over 5–15 years. We found a consistent two-phase long-term yield dynamic; during a <i>yield-building phase</i>, peak yields occurred within 4–5 years after planting, followed by a <i>yield-decline phase</i> in which switchgrass and miscanthus lost 30%–47% and 14%–40% of peak yields, respectively. Among the potential drivers of this dynamic and the yield decline, we found that weather conditions had little impact, as the variation across years was not large enough to drive the observed yield differences. Added nitrogen increased peak yields by 10%–20% and attenuated the yield decline by 20%–50%. However, since fertilized stands still showed a yield decline, other factors became limiting as stands aged. This conserved long-term yield dynamic has direct implications on management. A farm-to-gate economic analysis suggests replanting switchgrass and miscanthus 5 and 9 years following their peak yields maximizes profit over a 30-year time horizon. Results call for further management and breeding strategies to mitigate the yield-decline phase, and for reparameterization of global bioenergy models with carbon capture and storage, which may overestimate yields and the economic and environmental benefits of crops grown for bioenergy feedstocks.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"17 12","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.70088","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145469897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}