检索结果-内蒙古大学图书馆

Machine learning models reveal how biochar amendment affects soil microbial communities

Biochar 2023年第1期5卷 1527-1541页

作者： Chaotang Lei Tao Lu Haifeng Qian Yuxue Liu College of Environment Zhejiang University of TechnologyHangzhou 310032China State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products Institute of EnvironmentResourceSoil and FertilizersZhejiang Academy of Agricultural SciencesHangzhou 310021China Engineering Research Center of Biochar of Zhejiang Province Hangzhou 310021China

The biochar amendment plays a vital role in maintaining soil health largely due to its effects on soil microbial ***,individual cases and the variability in biochar properties are not sufficient to draw universal *** present study aimed to reveal how the biochar application affects soil microbial *** of 525 ITS and 128816S rRNA sequencing samples from previous studies were reanalyzed and machine learning models were applied to explore the dynamics of soil microbial communities under biochar *** results showed that biochar considerably changed the soil bacterial and fungal community composition and enhanced the relative abundances of Acidobacteriota,Firmicutes,Basidiomycota,and *** enhanced the robustness of the soil microbial community but decreased the interactions between fungi and *** random forest model combined with tenfold cross-validation were used to predict biomarkers of biochar response,indicating that potentially beneficial microbes,such as Gemmatimonadetes,Microtrichales,Candidatus_Kaiserbacteria,and Pyrinomonadales,were enriched in the soil with biochar amendment,which promoted plant growth and soil nutrient *** addition,the biochar amendment enhanced the ability of bacteria to biosynthesize and led to an increase in fungal nutrient patterns,resulting in an increase in the abundance and diversity of saprophytic fungi that enhance soil nutrient *** machine learning model more accurately revealed how biochar affected soil microbial community than previous independent *** study provides a basis for guiding the reasonable use of biochar in agricultural soil and minimizing its negative effects on soil microecosystem.

关键词： Biochar Soil health Soil microecosystem Machine learning Random forest Co-occurrence network

来源：评论

学校读者我要写书评

暂无评论

CRITICAL PROCESSES AND MAJOR FACTORS THAT DRIVE NITROGEN TRANSPORT FROM FARMLAND TO SURFACE WATER BODIES

引用

Frontiers of agricultural Science and engineering 2023年第4期10卷 541-552页

作者： Wenchao LI Wen XU Gaofei YIN Xulin ZHANG Zihan ZHANG Bin XI Qiuliang LEI Limei ZHAI Qiang ZHANG Linzhang YANG Hongbin LIU College of Resources and Environmental Sciences State Key Laboratory of North China Crop Improvement and RegulationKey Laboratory for Farmland Eco-Environment of HebeiHebei Agricultural UniversityBaoding 071001China. College of Resources and Environmental Sciences National Academy of Agriculture Green DevelopmentKey Laboratory of Plant-Soil Interactions(Ministry of Education)China Agricultural UniversityBeijing 100193China Rural Energy and Environment Agency Ministry of Agriculture and Rural AffairsBeijing 100125China. Key Laboratory of Nonpoint Pollution Control(Ministry of Agriculture and Rural Affairs) Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Heze Kingenta Ecological Engineering Co. Ltd.Heze 274000China Key Laboratory of Agro-environment in Downstream of Yangtze Plain(Ministry of Agriculture and Rural Affairs) Jiangsu Academy of Agricultural SciencesNanjing 210014China.

agricultural non-point source pollution is increasingly an important issue affecting surface water ***,the majority of the studies on nitrogen loss have focused on the agricultural field scale,however,the response of surface water quality at the watershed scale into the nitrogen loss at the field scale is poorly *** present study systematically reviewed the critical processes and major factors that nitrogen transport from farm fields to surface water *** critical processes of farmland nitrogen entering surface water bodies involve the processes of nitrogen transport from farmland to ditches and the transformation processes of nitrogen during migration in ditches/*** transport from farmland to ditches is one of the prerequisites and critical processes for farmland nitrogen transport to surface water *** transformation of nitrogen forms in ditches/rivers is an intermediate process in the migration of nitrogen from farmland to surface water *** loss from farmland is related to soil storage and exogenous ***,nitrogen input management should not only consider the current input,but also the contribution of soil storage due to the historical ***/rivers have a strong retention capacity for nitrogen,which will significantly affect the process of farmland nitrogen entering surface water *** factors affecting nitrogen transformation in river/ditches can be placed in four categories:(1)factors affecting hydraulic retention time,(2)factors affecting contact area,(3)factors affecting biological activity,and(4)forms and amount of nitrogen loading to river/*** systems are more biologically(including plants and microbes)active than rivers with biological factors having a greater influence on nitrogen *** developing pollution prevention and control strategies,ecological ditches can be constructed to increase biological activity and reduce the amount of surplus ni

关键词： nitrogen loss from soil transformation farm field scale watershed scale

来源：评论

学校读者我要写书评

暂无评论

Spatiotemporal Characteristics and Driven Forces of Nitrogen Flow of Dairy Farms in China: Based on a Comprehensive Model Combined with Production Practices and Embedding Localized Parameters

SSRN

引用

SSRN 2024年

作者： Yang, Xiao Zhang, Lijie Wang, Chaoyuan Si, Buchun Jiang, Weizhong Liang, Chao Shi, Zhengxiang College of Water Resources and Civil Engineering China Agricultural University Beijing100083 China Key Laboratory of Agricultural Engineering in Structure and Environment Ministry of Agriculture and Rural Affairs Beijing100083 China

This study developed a comprehensive nitrogen (N) flow model based on localized data in 2000-2019. Multiple modifications were conducted on top of previous models: (1) difference in feed N intake of cows at different production stages was considered;(2) N emission in the Intergovernmental Panel on Climate Change (IPCC) and the European Monitoring and Evaluation Program and the European environment Agency (EMEP/EEA) was integrated;(3) emission factor (EF) of NH3 was corrected based on localized climate;and (4) field application of manure was excluded from the system boundary to accommodate the production status of China. The effects of farm scales (LF, ≥100 heads;SF, 56%). Sensitivity analysis indicated that NUE at both levels were most sensitive to LF milk protein content, followed by the milk production, body weight of dairy cow, and herd structure. Different forms of N emission were substantially decided by manure EFs and the indoor excretion ratio. Scenario simulation suggested that Productive breed, low-protein feed, and proper N abatement procedures could improve NUE by >30% and reduce annual emission of NH3 and N2O to 38% and 13% of BAU. The study may provide important insights into the policy development of dairy industry in China, aiming at incentivizing productivity improvement and minimizing N loss. © 2024, The Authors. All rights reserved.

关键词： Manures

来源：评论

学校读者我要写书评

暂无评论

Polyphosphate Accelerates Transformation of Nonstructural Carbohydrates to Improve Growth of ppk-Expressing Transgenic Rice in Phosphorus Deficiency Culture

引用

Rice science 2023年第3期30卷 235-246页

作者： ZHU Jinling WEI Ruping WANG Xin ZHENG Chaoqun WANG Mengmeng YANG Yicheng YANG Liuyan State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China School of Science China Pharmaceutical UniversityNanjing 211198China Department of Agricultural and Biological Engineering University of FloridaGainesvilleFL 32611America

Crop yield and quality are often limited by the amount of phosphate fertilizer added to infertile soils,a key limiting factor for sustainable development in modern *** polyphosphate kinase(ppk)gene-expressing transgenic rice with a single-copy line(ETRS)is constructed to improve phosphate fertilizer utilization efficiency for phosphorus resource *** investigate the potential mechanisms of the increased biomass in ETRS in low phosphate culture,ETRS was cultivated in a low inorganic phosphate(Pi)culture medium(15μmol/L Pi,LP)and a normal Pi culture medium(300μmol/L Pi,CP),*** 89 d of cultivation in different concentrations of phosphate culture media,the total phosphorus,polyphosphate(polyP),biomass,photosynthetic rate,nonstructural carbohydrate(NSC)contents,related enzyme activities,and related gene expression levels were *** results showed that ETRS had a high polyP amount to promote the photosynthetic rate in LP,and its biomass was almost the same as the wild type(WT)in *** NSC content of ETRS in LP was higher than that of WT in LP,but slightly lower than that of WT in *** notably promoted the sucrose phosphate synthase activities of ETRS and significantly down-regulated the expression levels of sucrose transporter genes(OsSUT3 and OsSUT4),resulting in inhibiting the transport of sucrose from shoot to root in *** was concluded that polyP can stimulate the synthesis of NSCs in LP,which improved the growth of ETRS and triggered the biological activities of ETRS to save phosphate *** study provides a new way to improve the utilization rate of phosphate fertilizer in rice production.

关键词： polyphosphate phosphate fertilizer nonstructural carbohydrate sucrose transporter gene sucrose phosphate synthase

来源：评论

学校读者我要写书评

暂无评论

Impacts of air pollution and meteorological conditions on dry eye disease among residents in a northeastern Chinese metropolis:a six-year crossover study in a cold region

引用

Light(Science & Applications) 2023年第9期12卷 1757-1770页

作者： Cheng-Wei Lu Jing Fu Xiu-Fen Liu Zhi-Hua Cui Wei-Wei Chen Li Guo Xiao-Lan Li Yu Ren Fei Shao Li-Na Chen Ji-Long Hao Opthalmology Department The First Hospital of Jilin UniversityChangchun 130021China Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102China College of New Energy and Environment Jilin UniversityChangchun 130021China China College of Biological and Agricultural Engineering Jilin UniversityChangchun 130022China Shenyang Institute of Atmospheric Environment China Meteorological AdministrationShenyang 110166China

The purpose of this study is to explore the associations among dry eye disease(DED),air pollution,and meteorological conditions in the cold region of a northeastern Chinese metropolis(i.e.,Changchun).Data on ambient air pollutants and meteorological parameters as well as diagnosed DED outpatients during 2015–2021 were *** associations between DED and environmental factors were analysed at multiple time scales using various statistical methods(i.e.,correlation,regression and machine learning).Among the 10,809 DED patients(21,617 eyes)studied,64.60%were female and 35.40%were male.A higher frequency of DED was observed in March and April,followed by January,August and *** and multiple factor models showed the positive importance of particles with aerodynamic diameters<10μm(PM10),carbon monoxide(CO),and ozone(O_(3))among normal air pollutants and air pressure(AP),air temperature(AT)and wind speed(WS)among normal meteorological *** pollutants(PM10,nitrogen dioxide:NO_(2))and meteorological parameters(AT,AP)have combined impacts on DED *** the first time,we further explored the associations of detailed components of atmospheric particles and DED,suggesting potential emission sources,including spring dust from bare soil and roads and precursor pollutants of summer O_(3)formation from vehicles and industry in Northeast *** results revealed the quantitative associations among air pollutants,meteorological conditions and DED outpatients in cold regions,highlighting the importance of coordinated policies in air pollution control and climate change mitigation.

关键词： pollution meteorological northeastern

来源：评论

学校读者我要写书评

暂无评论

Comprehensive insight into the occurrence characteristics,influencing factors and risk assessments of antibiotics in the Chaohu Basin

引用

Frontiers of environmental Science & engineering 2024年第5期18卷 57-71页

作者： Shuanggang Hu Hongzhi Zhang Yongjie Yang Kangping Cui Junjie Ao Xuneng Tong Mengchen Shi Yi Wang Xing Chen Chenxuan Li Yihan Chen School of Resources and Environmental Engineering Hefei University of TechnologyHefei230009China Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China Department of Civil & Environmental Engineering National University of SingaporeSingapore117576Singapore College of Resources and Environment Anhui Agricultural UniversityHefei230036China

The pollution of antibiotics in aquatic environments has received extensive ***,research on antibiotic contamination in river-lake systems,a significant form of modern aquatic environments,still needs to be *** study focuses on the Chaohu Basin(China)investigating the occurrence characteristics,influencing factors,and risk assessments of antibiotics in the river-lake *** total antibiotic concentrations in the water phase and sediment phase were 3.14–1887.49 ng/L and 0.92–1553.75 ng/g,*** was the predominant antibiotic in the water phase,whereas tetracycline prevailed in the sediment *** differences in concentration and structural composition of antibiotics between the tributaries(river system)and Chaohu Lake were observed,indicating the involvement of various geochemical processes in the attenuation of antibiotics during transport to the receiving *** analysis suggested that the western river is the primary source of antibiotics in Chaohu *** nutrient influx in heavily polluted areas is crucial to addressing the escalating issue of antibiotic pollution in the river-lake *** widespread occurrence of clindamycin in the waters is likely due to wastewater treatment plant discharges,and high-intensity human activities continue to exacerbate antibiotic *** assessment indicated that sulfamethoxazole,tetracycline,lincomycin,and clindamycin ranked in the top four with the highest risks to the most sensitive aquatic ***,the antibiotics presented no risk to consumer *** study provides valuable insights for controlling antibiotic pollution in riverlake systems.

关键词： Antibiotics Occurrence characteristics Influencing factors Risk assessments River-lake system

来源：评论

学校读者我要写书评

暂无评论

A highly effective polycyclic aromatic hydrocarbon-degrading bacterium,Paracoccus ***-2,shows opposite remediation potential in two soil types

引用

Pedosphere 2022年第5期32卷 673-685页

作者： Wei CHEN Ying TENG Wenjie REN Yongming LUO Yao YU Key Laboratory of Soil Environment and Pollution Remediation Institute of Soil ScienceChinese Academy of SciencesNanjing 210018(China) Institute of Agricultural Resources and Environment Jiangsu Academy of Agricultural SciencesNanjing 210014(China) School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009(China)

Bioaugmentation is an efficient and eco-friendly strategy for the bioremediation of polycyclic aromatic hydrocarbons(PAHs).Since the degrading abilities of soils can greatly alter the abilities of PAH-degrading bacteria,illustrating the potential and mechanism of highly efficient degrading bacteria in different soil environments is of great importance for bioremediation.A PAH-degrading bacterium,Paracoccus aminovorans HPD-2,and two soil types,red and paddy soils,with distinct PAH-degrading abilities,were selected for this study.A soil microcosm experiment was performed by adding pyrene(PYR)and benzo[a]pyrene(B[a]P).Illumina sequencing was used to examine bacterial community *** results showed that inoculation with HPD-2 significantly elevated PYR and B[a]P degradation rates by 44.7%and 30.7%,respectively,in the red soil,while it only improved the degradation rates by 1.9%and 11%,respectively,in the paddy *** investigate the underlying mechanism,the fate of strain HPD-2 and the response of the indigenous bacterial communities were *** HPD-2 occupied certain niches in both soils,and the addition of the bacterium changed the native community structure more noticeably in the red soil than in the paddy *** addition of PAHs and strain HPD-2 significantly changed the abundances of 7 phyla among the 15 detected phyla in the red *** the paddy soil,5 of the 12 dominant phyla were significantly affected by PAHs and the inoculation of HPD-2,while 6new phyla were detected in the low-abundance phyla(<0.1%).The abundances of Massilia,Burkholderia,and Rhodococcus genera with PAH degradation efficiency were significantly increased by the inoculation of HPD-2 in the red soil during 42 d of ***,in the paddy soil,the most dominant effective genus,Massilia,was reduced by HPD-2 *** research revealed the remediation ability and inherent mechanism of the highly effective PAH-degrading strain HPD-2 in two different soil type

关键词： bacterial inoculation benzo[a]pyrene bioremediation organic contaminant paddy soil Paracoccus aminovorans pyrene red soil

来源：评论

学校读者我要写书评

暂无评论

Electron modulation by atomic Ir site decoration in porous Co/N co-doped carbon for electrocatalytic hydrogen evolution

引用

Nano Research 2023年第2期16卷 2011-2019页

作者： Youkui Zhang Zitong Yan Yeli Gao Yaqin Fu Wenhao Li Yunxiang Lin Chuanqiang Wu Yujuan Pu Tao Duan Li Song State Key Laboratory of Environment-Friendly Energy Materials National Co-Innovation Center for Nuclear Waste Disposal and Environmental SafetySouthwest University of Science and TechnologyMianyang 621010China National Synchrotron Radiation Laboratory Chinese Academy of Sciences(CAS)Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefei 230029China Institute of Physical Science and Information Technology School of Materials Science and EngineeringAnhui Key Laboratory of Information Materials and DevicesKey Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationAnhui UniversityHefei 230601China College of Chemistry and Chemical Engineering Chongqing UniversityChongqing 401331China

The rational design of materials at atomic scale as efficient and stable electrocatalysts for hydrogen evolution reaction(HER)is critical for energy ***,we report a novel hybrid nanostructure with iridium(Ir)and cobalt(Co)atomic pair configuration anchored in porous nitrogen-doped carbon(pNC)nanosheets(denoted as IrCo-pNC)for electrocatalytic *** investigations and theoretical calculations reveal that the interaction between Ir and Co species in pNC promotes electron accumulation and depletion around isolated Ir and Co atoms,respectively,resulting in a local asymmetry electron density *** functional theory calculations also suggest that the electrons transfer from Co to adjacent Ir atom causing the down shift of the d-band center of Ir 5d in IrCo-pNC catalyst,thus optimizing the adsorption of hydrogen on Ir *** as-prepared IrCo-pNC exhibits significant HER performance with an overpotential of 21 mV to achieve a current density of 10 mA·cm^(−2)in 0.5 M *** work provides insight into the role of asymmetry electron density distribution in nanomaterials in regulating HER electrocatalysis.

关键词： electron modulation iridium decoration porous carbon electrocatalysis hydrogen evolution reaction

来源：评论

学校读者我要写书评

暂无评论

Distribution and dynamics of niche and interspecific association of dominant phytoplankton species in the Feiyun River basin,Zhejiang,China

引用

Journal of Oceanology and Limnology 2024年第4期42卷 1157-1172页

作者： Shengnan ZHU Zengchuan DONG Guobin FU Shujun WU Jinyu MENG Weilin LIU Yupeng LIU Xun CUI Yuejiao ZHOU College of Hydrology and Water Resources Hohai UniversityNanjing 210098China CSIRO Environment Private Bag 5Wembley WA 6913Australia Department of Agricultural and Biological Engineering Indian River Research and Education CenterUniversity of FloridaFort Pierce 34945USA Jiangxi Provincial Key Laboratory of Hydrology-Water Resources and Water Environment Nanchang Institute of TechnologyNanchang 330099China

To investigate the dominant species and interspecific association in the phytoplankton community of the Feiyun River basin in Zhejiang Province,East China,the main stream and the Shanxi Zhaoshandu Reservoir in the downstream were chosen as the study area,for which 22 sampling sites were *** was conducted in September 2021,January,May,and July *** species were identified from both quantitative samples and in-vivo *** was quantified by direct *** show that there were 98 species belonging to 6 phyla and 78 *** addition,to clarify the niches of the dominant phytoplankton species and their interspecific association,the dominance index was calculated,and a comprehensive analysis was conducted including niche width,niche overlap value,ecological response rate,overall association,chi-square test,and the *** phytoplankton community exhibited characteristics of a Cyanobacteria-Chlorophyta-Diatom type community,showing higher diversity in spring and lower diversity in *** 11 dominants phytoplankton species from 3 phyla,both frequency and dominance degree varied seasonally,of which Microcystis *** the dominant species in Spring,Autumn,and *** niche widths of the dominant species ranged from 0.234 to 0.933,and were categorized into three *** niche overlap values of the 11 dominant species ranged from 0.359 to 0.959,exhibiting significant seasonal differences-highest in winter followed by autumn,spring,and summer in *** overall correlation among dominant species in all four seasons revealed a non-significant negative association,resulting in an unstable community structure.A significant portion(84.2%)of species pairs displayed positive associations,suggesting a successional pattern where Diatoms dominated while other dominant species shared resources and *** this pattern,stability measurements indicated that the dominant species community remained unstable.T

关键词： phytoplankton dominant species niche interspecific association Feiyun River basin

来源：评论

学校读者我要写书评

暂无评论

Urbanization reduces resource use efficiency of phytoplankton community by altering the environment and decreasing biodiversity

引用

Journal of environmental Sciences 2022年第2期34卷 140-151页

作者： Yigang Yang Huihuang Chen Mamun Abdullah Al Jean Claude Ndayishimiye Jun R Yang Alain Isabwe Anqi Luo Jun Yang Aquatic EcoHealth Group Fujian Key Laboratory of Watershed EcologyKey Laboratory of Urban Environment and HealthInstitute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China Engineering Research Center of Ecology and Agricultural Use of Wetland(Ministry of Education) College of AgricultureYangtze UniversityJingzhou 434025China

Urbanization often exerts multiple effects on aquatic and terrestrial organisms,including changes in biodiversity,species composition and ecosystem ***,the impacts of urbanization on river phytoplankton in subtropical urbanizing watersheds remain largely ***,we explored the effects of urbanization on phytoplankton community structure(i.e.,biomass,community composition and diversity)and function(i.e.,resource use efficiency)in a subtropical river at watershed scale in southeast China over 6 years.A total of 318 phytoplankton species belonging into 120 genera and 7 phyla were identified from 108 *** biomass showed an increasing trend with increasing urbanization *** phytoplankton community shifted from Chlorophyta dominance in rural upstream waters to Bacillariophyta dominance in urbanized downstream ***,phytoplankton diversity and resource use efficiency(RUE=phytoplankton biomass/total phosphorus)were significantly decreased with increasing urbanization level from upstream to *** RUE exhibited a significant positive correlation with species richness,but a negative correlation with phytoplankton *** variation in environmental factors(turbidity,total nitrogen,NH_(4)^(+)-N,total phosphorus,PO_(4)^(3-)-P and percentage urbanized area)was significantly correlated with phytoplankton diversity and ***,our results revealed the influence of urbanization on phytoplankton community structure and ecosystem function was due to its altering the environmental ***,human-driven urbanization may play crucial roles in shaping the structure and function of phytoplankton communities in subtropical rivers,and the mechanism of this process can provide important information for freshwater sustainable uses,watershed management and conservation.

关键词： Plankton Community functioning Subtropical river Urbanization gradient Land use Watershed ecology

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：