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Patterns and drivers of plant sexual systems in the dry-hot valley region of southwestern China

Plant Diversity 2024年第2期46卷 158-168页

作者： Rong Ma Qi Xu Yongqian Gao Deli Peng Hang Sun Bo Song State key laboratory of Plant Diversity and Specialty Crops/yunnan key laboratory for Integrative Conservation of Plant Species with Extremely Small Populations Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China College of life sciences Shaanxi Normal UniversityXi'an 710119China yunnan Forestry Technological College Kunming 650224China school of life science/key laboratory of yunnan for biomass energy and biotechnology of environment Yunnan Normal UniversityKunming 650500YunnanChina

Sexual systems play important roles in angiosperm evolution and exhibit substantial variations among different floras. Thus, studying their evolution in a whole flora is crucial for understanding the formation and maintenance of plant biodiversity and predicting its responses to environmental change. In this study, we determined the patterns of plant sexual systems and their associations with geographic elements and various life-history traits in dry-hot valley region of southwestern China, an extremely vulnerable ecosystem. Of the 3166 angiosperm species recorded in this area, 74.5% were hermaphroditic,13.5% were monoecious and 12% were dioecious, showing a high incidence of diclinous species. Diclinous species were strongly associated with tropical elements, whereas hermaphroditic species were strongly associated with temperate and cosmopolitan elements. We also found that hermaphroditism was strongly associated with showy floral displays, specialist entomophily, dry fruits and herbaceous *** was strongly associated with inconspicuous, pale-colored flowers, generalist entomophily, fleshy fruits, and woody plants, whereas monoecy was strongly associated with inconspicuous, pale-colored flowers, anemophily, dry fruits, and herbaceous plants. In addition, hermaphroditic species with generalist entomophily tended to flower in the dry season, whereas diclinous species with specialist entomophily tended to flower in the rainy season. However, independent of sexual systems, plants that produce dry fruits tended to flower in the rainy season and set fruits in the dry season, but the opposite pattern was found for fleshy fruit-producing plants. Our results suggest that in the dry-hot valleys, plant sexual systems are associated with geographic elements as well as various life-history traits that are sensitive to environmental change.

关键词： Floral traits Fruit type Growth form Pollination system Reproductive phenology

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可生物降解塑料取代传统塑料--对碳排放的影响

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Engineering 2024年第1期32卷 152-162页

作者： Guanyi Chen Jianyuan Li Yunan Sun Zhi Wang Gary ALeeke Christian Moretti Zhanjun Cheng Yuan Wang Ning Li Lan Mu Jinyu Li Junyu Tao Beibei Yan Li'an Hou Interdisciplinary Innovation Lab for environment and energy School of Mechanical Engineering&School of Biotechnology and Food ScienceTianjin University of CommerceTianjin 300134China school of environmental science and Engineering Tianjin UniversityTianjin 300350China school of Ecology and environment Tibet UniversityLhasa 850012China Tianjin key laboratory of biomass Wastes UtilizationTianjin Engineering Research Center for Organic Wastes Safe Disposal and Energy UtilizationTianjin 300072China school of Chemical Engineering University of BirminghamBirmingham B152TTUK Department of environmental Systems science ETH ZürichZürich CH-8092Switzerland

In recent years,a great deal of attention has been focused on the environmental impact of plastics,includ-ing the carbon emissions related to plastics,which has promoted the application of biodegradable *** worldwide have shown high interest in replacing traditional plastics with biodegradable ***,no systematic comparison has been conducted on the carbon emissions of biodegrad-able versus traditional plastic *** study evaluates the carbon emissions of traditional and biodegradable plastic products(BPPs)over four stages and briefly discusses environmental and economic *** scenarios-namely,the traditional method,chemical recycling,industrial composting,and anaerobic digestion-are considered for the disposal of waste BPPs(WBPPs).The analysis takes China as a case *** results show that the carbon emissions of 1000traditional plastic products(plastic bags,lunch boxes,cups,etc.)were52.09-150.36 carbon emissions equivalent of per kilogram(kg CO_(2)eq),with the stage of plastic production contributing 50.71%-50.77%.In comparison,1000 similar BPPs topped out at 21.06-56.86 kg CO_(2)eq,approximately 13.53%-62.19%lower than traditional plastic *** difference was mainly at the stages of plastic production and waste disposal,and the BPPs showed significant carbon reduction potential at the raw material acquisition *** disposal plays an important role in environmental impact,and composting and anaerobic digestion are considered to be preferable disposal methods for ***,the high cost of biodegradable plastics is a challenge for their widespread *** study has important reference significance for the sustainable development of the biodegradableplastics industry.

关键词： Carbon emissions Biodegradable plastics Different disposal scenarios Daily life consumption environmental and economic discussion

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Double Z-Scheme g-C_(3)N_(4)/BiOI/CdS heterojunction with I_(3)^(-)/I^(-) pairs for enhanced visible light photocatalytic performance

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Green energy & environment 2022年第6期7卷 1377-1389页

作者： Yan Zhang Yixiao Wu Liang Wan Wenfeng Yang Huijun Ding Chongyang Lu Weihao Zhang Zipeng Xing College of Resource and environmental science Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key LaboratoryWuhan UniversityWuhan430072China Department of environmental science School of Chemistry and Materials ScienceKey Laboratory of Functional Inorganic Material ChemistryMinistry of Education of the People's Republic of ChinaHeilongjiang UniversityHarbin150080China Jiangxi Provincial key laboratory of Water Resources and environment of Poyang Lake Jiangxi Institute of Water SciencesNanchangJiangxi330029China

The g-C_(3)N_(4)/BiOI/CdS double Z-scheme heterojunction photocatalyst with I_(3)^(-)/I^(-) redox pairs is prepared using simple calcination,solvothermal,and solution chemical deposition *** photocatalyst comprised mesoporous,thin g-C_(3)N_(4) nanosheets loaded on flower-like microspheres of BiOI with CdS quantum *** g-C_(3)N_(4)/BiOI/CdS double Z-scheme heterojunction has abundant active sites and in situ redox I_(3)^(-)/I^(-) mediators and shows quantum size effects,which are all conducive to enhancing the separation of photoinduced charges and increasing the photocatalytic degradation efficiency for bisphenol A,a model ***,the heterojunction photocatalyst achieves a photocatalytic degradation efficiency for bisphenol A of 98.62%in 120 min and photocatalytic hydrogen production of 863.44 mmol h^(-1) g^(-1) on exposure to visible *** excellent visible-light photocatalytic performance is as a result of the Z-scheme heterojunction,which extends absorption to the visible light region,as well as the I_(3)^(-)/I^(-) pairs,which accelerate photoinduced charge carrier transfer and separation,thus dramatically boosting the photocatalytic *** addition,the key role of the charge transfer across the indirect Z-scheme heterojunction has been elucidated and the transfer mechanism is confirmed based on the detection of intermediate I_(3)^(-)***,this study provides guidelines for the design of indirect Z-scheme heterojunction photocatalysts.

关键词： g-C_(3)N_(4)/BiOI/CdS Indirect Z-scheme heterojunction I_(3)^(-)/I^(-)pairs Visible-light photocatalysis BPA

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Numerical research on biomass wastewater treatment using doublepartition vessel with off-centered impellers

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International Journal of Agricultural and Biological Engineering 2023年第2期16卷 232-240页

作者： Wei Zhang Yijie Yang Wenmin Qian Longlong Ma Lungang Chen Na Liu Ying Liu Yubao Chen school of energy and environmental science Yunnan Normal UniversityKunming 6500500China yunnan Research Academy of Eco-environmental sciences Kunming 650034China school of energy and environment Southeast UniversityNanjing 210096China

Limited by single function,it is difficult for the traditional stirred vessels to meet the requirements of mixing system in biomass wastewater treatment *** estimation of biomass wastewater stirring reactor performance by computational fluid dynamics(CFD)during multiphase reactions is important,due to the uncertainty in the numerical *** this study,a novel double-partition stirred vessel with eccentrically located impellers was developed for the special *** addition,many simulations were carried out with the wastewater from biomass ethanol production as the medium to ensure the high reactor *** fluid flow was simulated and analyzed using the turbulent RNG k-ε model and multi reference frames.A good agreement is found between the simulation results and the confirmatory ***,the weir crest and interconnected pore were specially designed for the establishment of the circulation of fluid to maintain different technological conditions in the two *** distributions of radial velocities and tangential velocities were concentrated near the stirring *** the velocity profile,it is deduced that the flow pattern in the stirred vessel is insensitive to Reynolds ***,this simulation study could contribute to the improvement and optimization of the structure,as well as the operation of the novel stirred vessel.

关键词： biomass wastewater treatment double-partition vessel computational fluid dynamics

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Comprehensive silk gland multi-omics comparison illuminates two alternative mechanisms in silkworm heterosis

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Zoological Research 2022年第4期43卷 585-596页

作者： Han Xu Lei Chen Xiao-Ling Tong Hai Hu Li-Yuan Liu Gui-Chun Liu Ya-Nan Zhu Ruo-Ping Zhao Wen Wang Fang-Yin Dai Xin Li Hui Xiang school of Medicine Shenzhen Campus of Sun Yat-Sen UniversityShenzhenGuangdong 518107China Guangdong Provincial key laboratory of Insect Developmental Biology and Applied Technology Guangzhou Key Laboratory of Insect Development Regulation and Application ResearchInstitute of Insect Science and TechnologySchool of Life SciencesSouth China Normal UniversityGuangzhouGuangdong 510631China school of Ecology and environment Northwestern Polytechnical UniversityXi’anShaanxi 710072China State key laboratory of Silkworm Genome Biology Key Laboratory of Sericultural Biology and Genetic BreedingMinistry of Agriculture and Rural AffairsCollege of BiotechnologySouthwest UniversityChongqing 400715China State key laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China

Heterosis is a common phenomenon in plants and animals with diverse underlying ***,we applied two widely used silkworm hybrid systems and performed multi-omics analysis to identify possible intrinsic associations between different hybrid strategies and epigenetic mechanisms with silkworm *** found significant differences in the silk gland transcriptomic landscape between the two systems,including differentially expressed genes and expression patterns in the hybrid offspring compared to their *** the quaternary hybrid system,hybrid vigor was primarily due to upregulated genes and the parent-dominant upregulated expression pattern,involving multiple transport processes,cellular nitrogen compound catabolism,glucose metabolism,and tricarboxylic acid *** the binary system,hybrid vigor was mainly due to the down-regulated genes and transgressively down-regulated expression pattern,mainly involving basic nitrogen synthesis metabolism and body *** also demonstrated that DNA methylation may affect hybrid vigor by regulating the expression of several heterosis-related ***,this study revealed two alternative mechanisms that may contribute to silkworm heterosis,both of which facilitate the efficient utilization of energy and nitrogen for silk production.

关键词： Heterosis Silkworm Hybrid systems Multi-omics Silk production

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Integrated analysis of changes in soil microbiota and metabolites following long-term fertilization in a subtropical maize-wheat agroecosystem

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Pedosphere 2023年第3期33卷 521-533页

作者： Guiru ZHAO Kaixian WU Tongxin AN Lu WEN Shuhui ZI Zhiwei FAN Feng ZHOU Chengren OUYANG Youqiong YANG Bozhi WU Michael AFULLEN Faculty of Agronomy and biotechnology Yunnan Agricultural UniversityKunming 650201(China) Department of Resources and environment Moutai InstituteRenhuai 564507(China) Soil and Fertilizer Station Puer 665000(China) College of Agronomy and life science Kunming UniversityKunming 650214(China) school of Architecture and the Built environment Springfield Campus The University of WolverhamptonWolverhampton WV100JP(UK)

Although the application of inorganic fertilizer is a widespread agronomic practice used to boost soil productivity and crop yields,the effects on soil microbiome and the metabolic mechanisms involved in the high-yield response of crops to long-term fertilization remain poorly *** this study,combined metagenomic and metabolomic analyses were used to explore the mechanism of crop yield response to the 20-year application of nitrogen-phosphorus-potassium fertilizers in a subtropical agroecosystem in Southwest *** bacterial and fungal communities were monitored using16S r RNA(bacteria)and internal transcribed spacer 1(ITS1)full-length gene(fungi)amplicon sequencing technologies,and metabolites were detected using a liquid chromatograph mass *** results revealed that,in addition to providing nutrients,long-term fertilization shaped the compositions of bacteria and fungi to increase crop ***-term fertilization significantly increased the relative abundances of plant growth-promoting rhizobacteria and arbuscular mycorrhizal fungi and promoted the secretion of soil metabolites such as carbohydrates,organic acids,and organic nitrogen compounds,which were primarily enriched in amino acid metabolism *** increases in carbon and nitrogen sources and bioactive substances in soil promoted the increases in plant biomass and thereby maintained soil quality and production *** findings highlighted the importance of soil metabolites in maintaining soil productivity as well as crop yields,and suggested that regulating key metabolites could increase crop yields in agroecosystems.

关键词： carbohydrate crop yield metabolomics metagenomics organic acid organic nitrogen compound plant growth-promoting rhizobacteria soil fertility

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Distribution,characteristics and daily fluctuations of microplastics throughout wastewater treatment plants with mixed domestic-industrial influents in Wuxi City,China

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Frontiers of environmental science & Engineering 2022年第1期16卷 107-115页

作者： Wei Shan Bingbing Li Haichuan Zhang Zhenghao Zhang Yan Wang Zhiyang Gao Ji Li school of environment and Civil Engineering Jiangnan UniversityWuxi 214122China Jiangsu key laboratory of Anaerobic biotechnology Jiangnan UniversityWuxi 214122China Jiangsu College of Water Treatment Technology and Material Collaborative Innovation Centre Suzhou 215009China Jiangsu Engineering laboratory for biomass energy and Carbon Reduction Technology Jiangnan UniversityWuxi 214122China Wuxi Puhui environmental Protection Technology Co. Ltd.Wuxi 214122China Wuxi Hi-Tech Water Co. Ltd.Wuxi 214028Chin

In wastewater treatment plants(WWTPs),microplastics(MPs)are complex,especially with mixed domestic–industrial *** random grab sampling can roughly depict the distribution and characteristics of MPs but can not accurately reflect their daily *** this study,the concentration,shape,polymer type,size,and color of MPs were analyzed by micro-Raman spectroscopy(detection limit of 0.05 mm)throughout treatment stages of three mixed domestic–industrial WWTPs(W1,W2,and W3)in Wuxi City,China,and the daily fluctuations of MPs were also obtained by dense grab sampling within 24 *** influent samples,the average MP concentration of 392.2 items/L in W1 with 10%industrial wastewater was much higher than those in W2(71.2 items/L with 10%industrial wastewater)and W3(38.3 items/L with 60%industrial wastewater).White polyethylene granules with a diameter less than 0.5 mm from plastic manufacturing were the most dominant MPs in the influent of W1,proving the key role of industrial sources in MPs *** addition,the daily dense sampling results showed that MP concentration in W1 influent fluctuated widely between 29.1 items/L and 4617.6 items/L within a ***,few MPs(less than 4.0 items/L)in these WWTPs effluents were attributed to the effective removal of wastewater treatment ***,further attention should be paid to regulating the primary sources of MPs.

关键词： Microplastic Wastewater treatment plant Mixed domestic-industrial influent Characteristic Daily fluctuation

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Modeling of FAME, MG, TG and DG in Rapeseed Oil Biodiesel by Near Infrared Spectroscopy

Modeling of FAME, MG, TG and DG in Rapeseed Oil Biodiesel by...

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第十二届中国酶工程学术研讨会

作者： Minyuan Tang Huabiao Miao Qian Wu Nanyu Han Yuelin Mu Junpei Zhou Junmei Ding Yunjuan Yang Yueyue Feng Zunxi Huang school of life sciences Yunnan Normal University Engineering Research Center of Sustainable and Utilization of biomass energy Ministry of Education Yunnan Normal University key laboratory of yunnan for biomass energy and biotechnology of environment Yunnan Normal University key laboratory of Enzyme Engineering Yunnan Normal University

Near infrared spectroscopy is befitting the determination of the biodiesel components which is compared with GC, HPLC and SEC. Our work focuses on the development of the NIR model based on NIRs and GC-MS to determine FAME, MG, DG, TG in biodiesel which is produced from rapeseed oil by bio-enzyme catalysis. The result shows that the mathematical pretreatments selected respectively 1, 4, 4, 1 and the scatter correction was SNV + Detrend, the near infrared model of rapeseed oil biodiesel can be developed by partial least squares（PLS）. The model can be used to rapidly determine the main components of rapeseed oil biodiesel. In this work rapeseed oil was used as raw material oil to prepare biodiesel, so the model was applied to the determination of rapeseed oil biodiesel. The parameters of the near infrared models showed that the prediction results of the model are more accurate and have better prediction ability. Compared with other methods, the NIRs have the advantages of simple operation, fast analysis and affordable price. This work used rapeseed oil as raw material oil to prepare biodiesel, so the model was applied to the determination of rapeseed oil biodiesel. If we want to measure other biodiesel, we need to add a certain amount of biodiesel with other oils to make the sample more representatives and further improve the model.

关键词： Biodiesel FAME GC-MS NIR Rapeseed Oil

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Performant Au hydrogenation catalyst cooperated with Cu-doped Al_(2)O_(3) for selective conversion of furfural to furfuryl alcohol at ambient pressure

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Green energy & environment 2021年第4期6卷 546-556页

作者： Junjie Chen Weixiao Sun Yongxing Wang Wenhao Fang school of Chemical science and Technology Key Laboratory of Medicinal Chemistry for Natural Resource-Ministry of EducationFunctional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan ProvinceYunnan University2 North Cuihu Road650091 KunmingChina National Demonstration Center for Experimental Chemistry and Chemical Engineering Education Yunnan University650091 KunmingChina

Catalytic hydrogenation of furfural to furfuryl alcohol is an important upgrading process for valorization of biomass-derived furanyl platform ***,selective hydrogenation of a,b-unsaturated aldehydes like furfural to the corresponding alcohols at ambient pressure remains challenging in sustainable *** date heterogeneous Au hydrogenation catalyst has been scarcely reported for this reaction due to the low reactivity of Au for H_(2)*** this work,we showed that Au nanoparticles(loading:0.2 wt%)with a mean size of about 3 nm supported on Cu-doped Al_(2)O_(3)can efficiently hydrogenate furfural to furfuryl alcohol in liquid phase at ambient *** demonstrated that doping a small amount of Cu(2 mol%)to g-Al_(2)O_(3)may modify the Lewis acidity-basicity of Al_(2)O_(3)and simultaneously induce the presence of sufficient Cu^(+) species on surface,which facilitated the hydrogen transfer from i-PrOH to ***,we observed an enhanced reactivity of Au toward molecular H_(2)via cooperation with the Lewis acidic-basic Cu_(2)O-Al_(2)O_(3)***,100%yield to furfuryl alcohol with a productivity of 0.98 g_(FA),h^(-1),g^(-1)_(cat.)at 120C and 0.1 MPa H_(2)can be *** prepared Au/Cu-Al_(2)O_(3)catalyst was found reusable and was effective to the concentrated furfural solution,as well as several typical unsaturated aldehydes.

关键词： Supported Au catalyst Unsaturated aldehyde Hydrogenation Lewis acidity-basicity Cu^(+)species

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Elucidating electrochemical intercalation mechanisms of biomass-derived hard carbon in sodium-/potassium-ion batteries

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Carbon energy 2021年第4期3卷 541-553页

作者： Ziyi Zhu Wentao Zhong Yanjia Zhang Peng Dong Shigang Sun Yingjie Zhang Xue Li National and Local Joint Engineering laboratory for Lithium-Ion Batteries and Materials Fabrication Technology Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunmingYunnanChina school of environment and energy South China University of TechnologyGuangzhouGuangdongChina Department of Chemistry and life science Yokohama National UniversityYokohamaKanagawaJapan State key laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamenFujianChina

Hard carbon materials are characterized by having rich resources,simple processing technology,and low cost,and they are promising as one of the anode electrodes for commercial applications of sodium-/potassium-ion ***,exploring the alkali metal ion storage mechanism is particularly important for designing high-performance electrode ***,the structure of hard carbon is more complex,and the description of energy storage behavior is quite *** this study,the Magnolia grandiflora Lima leaf is used as a precursor,combined with simple pyrolysis and impurity removal processes,to obtain biomass-derived hard carbon material(carbonized Magnolia grandiflora Lima leaf[CMGL]).When it is used as an anode for sodium-ion batteries,it exhibits a high specific capacity of 315mAh/g,and the capacity retention rate is 90.0%after 100 *** potassium-ion batteries,the charge specific capacity is 263.5mAh/g,with a capacity retention rate of 85.5%at the same ***,different electrochemical analysis methods and microstructure characterization techniques were used to further elucidate the sodium/potassium storage mechanism of the *** the results indicate that the high potential slope region represents the adsorption/desorption characteristics on the surface active sites,whereas the low-potential quasiplateau region belongs to the ion insertion/extraction in the graphitic microcrystallites *** is noteworthy that potassium ion is randomly intercalated between the graphitic microcrystallite layer without forming a segmented intercalation compound structure.

关键词： biomass energy storage mechanisms hard carbon potassium-ion batteries sodium-ion batteries

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