Results 81 to 90 of about 2,548 (157)
Shuitu Baochi Xuebao[目的] 为探究坡耕地等高反坡台阶整地对玉米连作和玉米—芸豆轮作系统根土微生态特征的影响。[方法] 以玉米—芸豆轮作为研究对象,玉米连作为对照,采用野外原位监测采样和室内试验分析相结合的方法,通过GC-MS和高通量测序技术分析作物根系分泌物和土壤微生物群落组成、结构特征,揭示坡耕地等高反坡台阶整地对玉米连作和玉米-芸豆轮作根系分泌物种类、含量和土壤微生物群落组成及多样性的影响。[结果] (1)根系分泌物相对含量变化在CRT措施上更为突出,在轮作模式中更为显著。(2) CRT2处理提高土壤微生物群落数量 ...
鲁连欣 +4 more
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Comparison and Correlation Analysis of Microbial Community Diversity and Flavor Compounds in Different Layers of Pit Mud for Luzhou-flavor Baijiu in Different Seasons [PDF]
This study focused on the analysis of the microbial community structure and flavor substances of different layers of pit mud for Luzhou-flavor baijiu in spring and autumn using high-throughput sequencing and headspace solid-phase microextraction combined
WANG Yiwen, TIAN Yaoyao, ZHANG Kefen, ZHANG Suyi, GAO Jie, TANG Hongjie, SONG Chuan, TANG Yu, SUN Mingjun, ZUO Yong, LI Qi
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Shuitu Baochi Xuebao[目的] 研究土壤微生物群落对放牧强度变化的响应机理,为荒漠草原生态保护和修复提供科学的理论和技术支撑。[方法] 以内蒙古荒漠草原为研究对象,研究不同放牧强度(未放牧、轻度放牧、中度放牧、重度放牧)对不同深度(0—20,20—40 cm)土壤理化性质和土壤微生物群落组成及多样性的影响,分析土壤理化性质与土壤微生物群落间的交互作用。[结果] 相比于未放牧,中度放牧显著降低0—20 cm土层土壤全氮(TN)和土壤有机碳(TOC)(p＜0.05),分别降低17.99%和19.23%,土壤容重(SBD ...
张蒙蒙 +6 more
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Shuitu Baochi Xuebao, 2011 为了查明土壤微生物对不同类型盐碱地土壤质量的反应,采用平板稀释法和Biolog微生物鉴定系统对宁夏银川平原盐化、碱化2种类型盐渍化土壤微生物区系、季节变化、结构组成及微生物多样性进行研究。结果表明:随着盐碱化程度的加重,土壤细菌、真菌和放线菌数量及微生物总数呈现显著降低的趋势;细菌、真菌和放线菌数量在不同季节上表现为6月>8月>9月;土壤种群数量占微生物总数的比例大小为细菌>放线菌>真菌;盐化土壤微生物数量与土壤养分间的相关关系较碱化土壤密切。随着盐化和碱化土壤程度的加强 ...
李凤霞 +5 more
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Effect of Seasonal Variation on Microbial Community Succession and Volatile Compounds during the Fermentation of Shanxi Aged Vinegar Daqu [PDF]
In this study, metagenomics and metabolomics were combined to systematically analyze the effect of seasonal variation on microbial community succession and volatile compounds during the fermentation of Shanxi aged vinegar Daqu. The results indicated that
LI Min, SHEN Jin, LANG Fanfan, ZHANG Qi, WU Yan, YAN Yufeng, ZHENG Yu
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Shuitu Baochi Xuebao, 2004 以黄壤作为供试土壤,种植重金属富集植物与非富集植物,采用室内培养方法对外加镍污染黄壤的微生物活性及其群落结构进行了研究。结果表明:较低浓度Ni有利于提高土壤微生物活性,当Ni浓度>100 mg/kg时供试土壤的微生物活性开始下降,其中微生物生物碳、氮量和基础呼吸随重金属浓度增加而明显下降,但种植重金属富集植物的土壤下降幅度明显低于种植非富集植物的土壤。结果还显示,镍严重污染破坏了土壤微生物区系,使土壤细菌、放线菌及真菌数量下降,其中放线菌对重金属毒性影响最为敏感 ...
陆引罡 黄建国 滕应 罗永水 王荣平 湛方栋
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Haiyang yu huzhao厌氧氨氧化菌(anaerobic ammonium oxidation, Anammox)是驱动厌氧氨氧化过程、去除海洋沉积物中氮元素的重要引擎。为分析无机氮和重金属对厌氧氨氧化菌的影响，以渤海沉积物中厌氧氨氧化菌为研究对象，采用Illumina高通量测序技术和实时荧光定量PCR技术对渤海13个站位表层沉积物中AMX16S rDNA基因进行检测，分析其群落结构以及重金属含量对群落结构和多样性的影响。结果表明，渤海沉积物中厌氧氨氧化菌类群可归为14门、8纲、9目、5科、8属、26种，其中浮霉菌门 ...
王 文静 +6 more
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Structure characteristics of microbial community in acid mine drainage in Shandi River Basin [PDF]
In order to reveal the structural characteristics of microbial communities in acid mine drainage(AMD) under different redox environmental conditions and the interaction between microbial communities and groundwater environment, Select the typical ...
Chunhong ZHAO +7 more
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Patterns and Processes in Marine Microeukaryotic Community Biogeography from Xiamen Coastal Waters and Intertidal Sediments, Southeast China [PDF]
, 2017 微型真核生物数量大，分布广泛，多样性高。这些有机体，如藻类、原生动物和真菌在海洋生态系统中发挥着重要作用。微型真核生物群落构建机制的研究对生态系统稳定性、功能乃至人类健康都有重要意义。然而，我们对驱动亚热带近海海域浮游和底栖微型真核生物群落构建的模式和过程了解很少。本研究采用高通量测序技术研究比较厦门岛海水和沉积物微型真核生物群落（包括总体、优势、稀有和条件稀有种）组成，揭示其生物地理模式和生态学驱动机制。主要研究结果如下： 1.厦门岛海水和沉积物生境微型真核生物群落研究表明 ...
陈伟东
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Analysis of Fungal Communities of High-temperature and Medium-temperature Daqu in Binzhou Region and Their Correlation with Sensory Quality [PDF]
To analyze the differences in fungal community structure and sensory quality of different types of Daqu in Binzhou, Shandong Province, the fungal community structure and quality characteristics of high-temperature and medium-temperature Daqu in Binzhou ...
Haibo ZHANG +6 more
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