Global Change Biology Bioenergy最新文献

{"title":"Biochar and manure additions increased above- and belowground wood decomposition, and soil enzyme activities in a sandy loam soil","authors":"Ruirui Zhao,&nbsp;Deborah S. Page-Dumroese,&nbsp;Yong Liu,&nbsp;Kai Wang,&nbsp;R. Kasten Dumroese","doi":"10.1111/gcbb.13110","DOIUrl":"10.1111/gcbb.13110","url":null,"abstract":"<p>While biochar and manure can provide considerable benefits to soil properties, how these amendments may alter soil microbial activity and decomposition processes remains unknown. In a split-split-split-plot experiment, we amended a sandy loam soil with three rates of manure (whole plot; 0, 3, 9 Mg ha⁻¹) and biochar (split-plot; 0, 2.5, 10 Mg ha⁻¹), and installed three species of wood stakes (split-split-split plot; triploid poplar, <i>Populus tomentosa</i> Carr.; trembling aspen, <i>Populus tremuloides</i> Michx.; and loblolly pine, <i>Pinus taeda</i> L.) on the soil surface and in the mineral soil (split-split plot) to serve as a substrate for microbial degradation. Wood stakes were sampled 3 years after installation to assess decomposition rates (mass loss), and changes in wood carbon (C) and nitrogen (N). In addition, soil extracellular enzyme activities at the 0–20 cm depth were examined. Biochar alone, especially 10 Mg ha⁻¹, increased wood stake decomposition and moisture content on the soil surface and in the mineral soil. Manure at the rate of 9 Mg ha⁻¹ increased soil N-acetyl-β-D-glucosaminidase, α-glucosidase, and aryl sulfatase activities by 91%, 17%, and 48% respectively. Because of the synergistic benefits of biochar and manure, we suggest that, in this climatic regime and soil texture, 10 Mg ha⁻¹ biochar can be used for soil C sequestration and soil quality improvement, and 9 Mg ha⁻¹ manure can be used in combination with biochar to build soil organic matter in plantations.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"16 1","pages":""},"PeriodicalIF":5.6,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.13110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134992000","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":"Valorisation of marginal agricultural land in the bioeconomy","authors":"Andreas Kiesel,&nbsp;Moritz von Cossel,&nbsp;John Clifton-Brown,&nbsp;Iris Lewandowski","doi":"10.1111/gcbb.13105","DOIUrl":"https://doi.org/10.1111/gcbb.13105","url":null,"abstract":"&lt;p&gt;The bioeconomy requires more sustainably produced biomass to make a positive societal impact. Sustainable biomass resources must neither compete directly with essential food supplies through competition for production resources, nor through indirect land use change (iLUC) displacing food production elsewhere (Clifton-Brown et al., &lt;span&gt;2023&lt;/span&gt;). Utilization of marginal, abandoned and degraded land can provide low iLUC risk biomass which is in line with the Renewable Energy Directive RED II (European Union, &lt;span&gt;2018&lt;/span&gt;). Marginal land, as defined by Elbersen et al. (&lt;span&gt;2017&lt;/span&gt;), is estimated to represent a very large land resource of 38–53.5 million ha in the EU and the United Kingdom (Gerwin et al., &lt;span&gt;2018&lt;/span&gt;; von Cossel, Lewandowski, et al., &lt;span&gt;2019&lt;/span&gt;) and climate warming impacts are likely to speed up degradation of arable into marginal land (European Environment Agency [EEA], &lt;span&gt;2017&lt;/span&gt;; IPCC, &lt;span&gt;2023&lt;/span&gt;). Marginal lands are at particular risk of becoming abandoned and abandoned land areas are projected to increase by 5%–10% (4.8 million ha) in the EU and the United Kingdom by 2030 (Elbersen et al., &lt;span&gt;2022&lt;/span&gt;; Perpiña Castillo et al., &lt;span&gt;2018&lt;/span&gt;).&lt;/p&gt;&lt;p&gt;This Special Issue focuses on the ‘valorisation of marginal agricultural land for the bioeconomy’ to maximize exploitation of this land resource and is largely based on research performed in two EU-Horizon-2020-funded projects: GRACE (Growing advanced industrial crops on marginal lands for biorefineries, GA 745012, https://www.grace-bbi.eu/) and MAGIC (Marginal Lands for Growing Industrial Crops, GA 727698, https://magic-h2020.eu/). It is divided into four sections: Section 1 consists of seven studies assessing the potential of marginal land for crop production. Section 2 presents extensive field trial results for industrial crop cultivation using the model crop miscanthus and assessing the interactions between Genotype (or hybrid) × Environment × Management (G × E × M). Section 3 introduces results from studies on biomass utilization, ranging from biorefinery approaches for the production of novel biobased platform chemicals to direct material use. In Section 4, results of the environmental, social and techno-economic life cycle assessments of different value chains are presented. Finally, the aggregated ‘lessons learnt’ in the last decade of perennial biomass crop research are translated into recommendations to shape EU policy for the support of perennial cropping systems.&lt;/p&gt;&lt;p&gt;Early stage identification of land abandonment is necessary to maximize exploitation of marginal land. The study of Meijninger et al. (&lt;span&gt;2022&lt;/span&gt;) introduces a novel approach for identifying arable land abandonment using radar coherence data in combination with a Random Forest model. The results of this study show that radar-based analysis is a relatively simple method to detect land abandonment at an early stage and allow monitoring and rapid po","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"15 12","pages":"1418-1423"},"PeriodicalIF":5.6,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.13105","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"109168499","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":"Transcriptomics reveal how circadian regulation contributes to starch hyperaccumulation in marine alga Tetraselmis helgolandica","authors":"Qianwen Shi,&nbsp;Zuodong Zhou,&nbsp;Zhiwei Hong,&nbsp;Zhi Yang,&nbsp;Zhengquan Gao,&nbsp;Liyun Sun,&nbsp;Jianhua Fan","doi":"10.1111/gcbb.13106","DOIUrl":"https://doi.org/10.1111/gcbb.13106","url":null,"abstract":"<p><i>Tetraselmis helgolandica</i> var. Tsingtaoensis is a marine microalga. It can produce a large amount of starch, especially amylose, with addition of carbon source and specific circadian rhythm. The mechanism behind this phenomenon is still unclear. Analysis of this mechanism can help to develop <i>T. helgolandica</i> into a new green bioengineering chassis organism. We explained how circadian rhythm and glucose affect the rate of starch accumulation and starch structure in <i>T. helgolandica</i> based on the transcriptome. The glucose inhibited the photosynthetic system of <i>T. helgolandica</i>, while the circadian rhythm can alleviate the inhibition. Circadian rhythm induced the upregulation of Embden–Meyerhof–Parnas pathway and pentose phosphate pathway (PPP) in <i>T. helgolandica</i>, but had little effect on the tricarboxylic acid cycle. PPP pathway provides Ribulose-1,5-bisphosphate, which may be beneficial for dark reactions and nucleotide synthesis. And PPP pathway provides Nicotinamide adenine dinucleotide phosphate, which facilitates energy substance synthesis. This will further upregulate the starch metabolic pathway. The transcript level of the key gene ADP-Glucose pyrophosphorylase is mainly regulated by glucose. The granule-bound starch synthase (<i>gbss</i>), a key gene for amylose synthesis, is mainly influenced by circadian rhythm. In general, the increase of starch synthesis and amylose ratio requires both glucose addition and circadian rhythm. We report the first referenced transcriptome of <i>T. helgolandica</i>. Differences between transcripts reveal how circadian rhythm and glucose addition affected the rate of starch synthesis and structural variation. It provides a reference for an in-depth study of starch synthesis in green algae.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"15 12","pages":"1477-1493"},"PeriodicalIF":5.6,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.13106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"109164364","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":"Natural lignin modulators improve bagasse saccharification of sugarcane and energy cane in field trials","authors":"Viviane Fátima de Oliveira,&nbsp;Lucas Figueiredo,&nbsp;Gabriel de Oliveira Correia,&nbsp;Maria de Fátima Pires da Silva Machado,&nbsp;Hugo Zeni Neto,&nbsp;Wanderley Dantas dos Santos,&nbsp;Claudete Aparecida Mangolin","doi":"10.1111/gcbb.13108","DOIUrl":"https://doi.org/10.1111/gcbb.13108","url":null,"abstract":"<p>The burgeoning cellulosic ethanol industry necessitates advancements in enzymatic saccharification, effective pretreatments for lignin removal, and the cultivation of crops more amenable to saccharification. Studies have demonstrated that natural inhibitors of lignin biosynthesis can enhance the saccharification of lignocellulose, even in tissues generated several months post-treatment. In this study, we applied daidzin (a competitive inhibitor of coniferaldehyde dehydrogenase), piperonylic acid (a <i>quasi</i>-irreversible inhibitor of cinnamate 4-hydroxylase), and methylenedioxy cinnamic acid (a competitive inhibitor of 4-coenzyme A ligase) to 60-day-old crops of two conventional Brazilian sugarcane cultivars and two energy cane clones, bred specifically for enhanced biomass production. The resultant biomasses were evaluated for lignin content and enzymatic saccharification efficiency without additional lignin-removal pretreatments. The treatments amplified the production of fermentable sugars in both the sugarcane cultivars and energy cane clones. The most successful results softened the most recalcitrant lignocellulose to the level of the least recalcitrant of the biomasses tested. Interestingly, the softest material became even more susceptible to saccharification.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"15 12","pages":"1465-1476"},"PeriodicalIF":5.6,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.13108","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"109162374","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":"Triacylglycerol, total fatty acid, and biomass accumulation of metabolically engineered energycane grown under field conditions confirms its potential as feedstock for drop-in fuel production","authors":"Viet Dang Cao,&nbsp;Baskaran Kannan,&nbsp;Guangbin Luo,&nbsp;Hui Liu,&nbsp;John Shanklin,&nbsp;Fredy Altpeter","doi":"10.1111/gcbb.13107","DOIUrl":"https://doi.org/10.1111/gcbb.13107","url":null,"abstract":"<p>Metabolic engineering for hyperaccumulation of lipids in vegetative tissues of high biomass crops promises a step change in oil yields for the production of advanced biofuels. Energycane is the ideal feedstock for this approach due to its exceptional biomass production and persistence under marginal conditions. Here, we evaluated metabolically engineered energycane with constitutive expression of the lipogenic factors <i>WRINKLED</i>1 (<i>WRI</i>1), <i>DIACYLGLYCEROL ACYLTRANSFERASE</i>1 (<i>DGAT</i>1), and <i>OLEOSIN</i>1 (<i>OLE</i>1) for the accumulation of triacylglycerol (TAG), total fatty acid (TFA), and biomass under field conditions at the University of Florida-IFAS experiment station near Citra, Florida. TAG and TFA accumulation were highest in leaves (up to 9.9% and 12.9% of DW, respectively), followed by juice from crushed stems, stems, and roots. TAG and TFA accumulation increased up to harvest time and correlated highest with <i>OLE</i>1 and <i>DGAT</i>1 expression. Biomass dry weight, TAG, and TFA content differed greatly depending on <i>DGAT</i>1 and <i>OLE</i>1 expression in transgenic lines with similar <i>WRI</i>1 expression. Biomass did not significantly differ between WT and line L2 with <i>DAGT</i>1 and <i>OLE</i>1 expressed at low levels and TAG and TFA accumulating to 12- and 1.6-fold that of WT leaves, respectively. In contrast, line L13, with intron-mediated enhancement of <i>DGAT</i>1 expression, displayed a 245- to 330-fold increase in TAG and a 4.75- to 6.45-fold increase in TFA content compared with WT leaves and a biomass reduction of 52%. These results provide the basis for developing novel feedstocks for expanding plant lipid production and point to new prospects for advanced biofuels.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"15 12","pages":"1450-1464"},"PeriodicalIF":5.6,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.13107","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"109176014","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":"Potential for biochar carbon sequestration from crop residues: A global spatially explicit assessment","authors":"Shivesh Kishore Karan,&nbsp;Dominic Woolf,&nbsp;Elias Sebastian Azzi,&nbsp;Cecilia Sundberg,&nbsp;Stephen A. Wood","doi":"10.1111/gcbb.13102","DOIUrl":"https://doi.org/10.1111/gcbb.13102","url":null,"abstract":"Global warming necessitates urgent action to reduce carbon dioxide (CO2) emissions and remove CO2 from the atmosphere. Biochar, a type of carbonized biomass which can be produced from crop residues (CRs), offers a promising solution for carbon dioxide removal (CDR) when it is used to sequester photosynthetically fixed carbon that would otherwise have been returned to atmospheric CO2 through respiration or combustion. However, high‐resolution spatially explicit maps of CR resources and their capacity for climate change mitigation through biochar production are currently lacking, with previous global studies relying on coarse (mostly country scale) aggregated statistics. By developing a comprehensive high spatial resolution global dataset of CR production, we show that, globally, CRs generate around 2.4 Pg C annually. If 100% of these residues were utilized, the maximum theoretical technical potential for biochar production from CRs amounts to 1.0 Pg C year−1 (3.7 Pg CO2e year−1). The permanence of biochar differs across regions, with the fraction of initial carbon that remains after 100 years ranging from 60% in warm climates to nearly 100% in cryosols. Assuming that biochar is sequestered in soils close to point of production, approximately 0.72 Pg C year−1 (2.6 Pg CO2e year−1) of the technical potential would remain sequestered after 100 years. However, when considering limitations on sustainable residue harvesting and competing livestock usage, the global biochar production potential decreases to 0.51 Pg C year−1 (1.9 Pg CO2e year−1), with 0.36 Pg C year−1 (1.3 Pg CO2e year−1) remaining sequestered after a century. Twelve countries have the technical potential to sequester over one fifth of their current emissions as biochar from CRs, with Bhutan (68%) and India (53%) having the largest ratios. The high‐resolution maps of CR production and biochar sequestration potential provided here will provide valuable insights and support decision‐making related to biochar production and investment in biochar production capacity.","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"15 12","pages":"1424-1436"},"PeriodicalIF":5.6,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.13102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"109168512","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":"Vermicompost derived from mushroom residues improves soil C/P cycling, bacterial community, and fungal abundance","authors":"Dongqi Jiang,&nbsp;Chenran Wu,&nbsp;Shuqiang Wang,&nbsp;Yulan Zhang,&nbsp;Zhenhua Chen,&nbsp;Nan Jiang,&nbsp;Ying Zhang,&nbsp;Hongtu Xie","doi":"10.1111/gcbb.13103","DOIUrl":"https://doi.org/10.1111/gcbb.13103","url":null,"abstract":"<p>The utilization of agricultural waste organic materials through composting technology has gained significant traction in agricultural production as an effective means of crop nutrient management. However, the differences in the impact of organic amendments prepared by traditional composting and vermicomposting on soil properties still deserve further research. Based on field experiments conducted in greenhouse, compared to chemical fertilizer treatments as control, we utilized traditional compost (OF) and vermicompost (VcF) derived from agricultural organic waste edible mushroom bran and cow manure (2:8). Variations in soil physiochemical properties, activities of soil enzymes related C and P cycling, abundances and diversities of bacterial 16S rRNA and fungal ITS gene at total DNA level were analyzed. Both compost treatments enhanced soil organic carbon, soil total phosphorus, and soil available P content significantly and also increased the activities of soil α-glucosidase, β-glucosidase, acid phosphomonoesterase, and alkaline phosphomonoesterase significantly. The above results suggested that soil C and P transformations were stimulated effectively by both organic amendments. OF and VcF increased the fungal ITS absolute abundances significantly while diversity indices of soil bacterial community increased significantly under both treatments. Correlation analysis indicated that bacterial community composition was strongly correlated with several soil property indexes while fungal community composition was only significantly correlated with soil total phosphorous content. In conclusion, similar to traditional compost, vermicompost significantly improved soil nutrient cycling (especially C and P aspects). In terms of soil microbes, bacteria and fungi showed different responding mechanism to vermicompost: bacteria adjust microbial structure, while fungi tend to proliferated. In consideration of the advantages of vermicompost in technology and economic cost, it could be applied in the subsequent agricultural production more frequently.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"15 12","pages":"1437-1449"},"PeriodicalIF":5.6,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.13103","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"109169113","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":"Biomass potential from agricultural residues for energy utilization in West Nusa Tenggara (WNT), Indonesia","authors":"Hidayatul Fitri,&nbsp;Gürkan A. K. Gürdil,&nbsp;Bahadır Demirel,&nbsp;Elçin Yeşiloğlu Cevher,&nbsp;Hynek Roubík","doi":"10.1111/gcbb.13100","DOIUrl":"https://doi.org/10.1111/gcbb.13100","url":null,"abstract":"<p>The West Nusa Tenggara (WNT) province is one of the regions that contribute the most to the production of rice, corn, and cacao. The residues of these crops increase as production increases. The potential availability of the residue was calculated on the basis of the amount of agricultural product and the availability of unutilized residues. The estimated potential energy and collected data were processed and combined with converted factors, such as the yield per hectare and the calorific value, taking into account another purpose, the use of domestic residues for animal feed. Paddy straw, corn straw, and corn cobs had the highest percentage of residue availabilities, 85.91%, 82.26%, and 88.25%, respectively. In addition, the WNT regency has a rich diversity of agricultural residues from superior commodities such as rice, corn, coffee, coconut and cacao. The calculation of the total heating value (THV) of the agricultural residue available reached up to 42.4 PJ. Furthermore, the use of biomass for bioenergy resources is promising, particularly for the WNT region, with the potential for unused agricultural residues. The dependence on unsustainable energy, such as coal and fossil fuel, can be reduced by deploying and developing energy production from biomass use. Therefore, the potential for bioenergy generation and the availability of biomass can be developed for sustainable agriculture and energy management.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"15 11","pages":"1405-1414"},"PeriodicalIF":5.6,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.13100","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50144800","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 good, the bad, and the future: Systematic review identifies best use of biomass to meet air quality and climate policies in California","authors":"Peter Freer-Smith,&nbsp;Jack H. Bailey-Bale,&nbsp;Caspar L. Donnison,&nbsp;Gail Taylor","doi":"10.1111/gcbb.13101","DOIUrl":"https://doi.org/10.1111/gcbb.13101","url":null,"abstract":"<p>California has large and diverse biomass resources and provides a pertinent example of how biomass use is changing and needs to change, in the face of climate mitigation policies. As in other areas of the world, California needs to optimize its use of biomass and waste to meet environmental and socioeconomic objectives. We used a systematic review to assess biomass use pathways in California and the associated impacts on climate and air quality. Biomass uses included the production of renewable fuels, electricity, biochar, compost, and other marketable products. For those biomass use pathways recently developed, information is available on the effects—usually beneficial—on greenhouse gas (GHG) emissions, and there is some, but less, published information on the effects on criteria pollutants. Our review identifies 34 biomass use pathways with beneficial impacts on either GHG or pollutant emissions, or both—the “good.” These included combustion of forest biomass for power and conversion of livestock-associated biomass to biogas by anaerobic digestion. The review identified 13 biomass use pathways with adverse impacts on GHG emissions, criteria pollutant emissions, or both—the “bad.” Wildfires are an example of one out of eight pathways which were found to be bad for both climate and air quality, while only two biomass use pathways reduced GHG emissions relative to an identified counterfactual but had adverse air quality impacts. Issues of high interest for the “future” included land management to reduce fire risk, future policies for the dairy industries, and full life-cycle analysis of biomass production and use.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"15 11","pages":"1312-1328"},"PeriodicalIF":5.6,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.13101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50142320","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":"Climate cooling benefits of cellulosic bioenergy crops from elevated albedo","authors":"Cheyenne Lei,&nbsp;Jiquan Chen,&nbsp;G. Philip Robertson","doi":"10.1111/gcbb.13098","DOIUrl":"https://doi.org/10.1111/gcbb.13098","url":null,"abstract":"<p>Changes in land surface albedo can alter ecosystem energy balance and potentially influence climate. We examined the albedo of six bioenergy cropping systems in southwest Michigan USA: monocultures of energy sorghum (<i>Sorghum bicolor</i>), switchgrass (<i>Panicum virgatum</i> L.), and giant miscanthus (<i>Miscanthus</i> × <i>giganteus)</i>, and polycultures of native grasses, early successional vegetation, and restored prairie. Direct field measurements of surface albedo (<i>α</i>_s) from May 2018 through December 2020 at half-hourly intervals in each system quantified the magnitudes and seasonal differences in albedo (∆_<i>α</i>) and albedo-induced radiative forcing (RF_∆<i>α</i>). We used a nearby forest as a historical native cover type to estimate reference albedo and RF_∆<i>α</i> change upon original land use conversion, and a continuous no-till maize (<i>Zea mays L</i>.) system as a contemporary reference to estimate change upon conversion from annual row crops. Annually, <i>α</i>_s differed significantly (<i>p</i> &lt; 0.05) among crops in the order: early successional (0.288 ± 0.012SE) &gt;&gt; miscanthus (0.271 ± 0.009) ≈ energy sorghum (0.270 ± 0.010) ≥ switchgrass (0.265 ± 0.009) ≈ restored prairie (0.264 ± 0.012) &gt; native grasses (0.259 ± 0.010) &gt; maize (0.247 ± 0.010). Reference forest had the lowest annual <i>α</i>_s (0.134 ± 0.003). Albedo differences among crops during the growing season were also statistically significant, with growing season <i>α</i>_s in perennial crops and energy sorghum on average ~20% higher (0.206 ± 0.003) than in no-till maize (0.184 ± 0.002). Average non-growing season (NGS) <i>α</i>_s (0.370 ± 0.020) was much higher than growing season <i>α</i>_s (0.203 ± 0.003) but these NGS differences were not significant. Overall, the original conversion of reference forest and maize landscapes to perennials provided a cooling effect on the local climate (RF_{<i>αMAIZE</i>}: −3.83 ± 1.00 W m⁻²; RF_{<i>αFOREST</i>}: −16.75 ± 3.01 W m⁻²). Significant differences among cropping systems suggest an additional management intervention for maximizing the positive climate benefit of bioenergy crops, with cellulosic crops on average ~9.1% more reflective than no-till maize, which itself was about twice as reflective as the reference forest.</p>","PeriodicalId":55126,"journal":{"name":"Global Change Biology Bioenergy","volume":"15 11","pages":"1373-1386"},"PeriodicalIF":5.6,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcbb.13098","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50153792","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}