作者：梁钰镁,段晓婷,高永,王宁,蒙仲举,韩彦隆
单位：内蒙古农业大学沙漠治理学院 荒漠生态系统保护与修复国家林业和草原局重点实验室，内蒙古 呼和浩特 010018
关键词：沙柳沙障,腐烂分解,不同坡位,群落组成,多样性
基金：内蒙古自治区科技计划项目(2022YFDZ0027),荒漠生态系统保护与修复创新团队(BR22-13-03)
为探究不同坡位对沙柳Salix psammophila沙障沙埋部真菌群落组成及多样性的影响，以刚铺设于平缓沙丘的沙障作为对照(CK)，采用野外原位取样与室内指标测定的方法，结合Illumina MiSeq测序技术，揭示影响真菌群落组成及多样性的主要因子。结果表明：(1) 不同坡位处真菌优势菌为粪壳菌纲Sordariomycetes和蘑菇纲Agaricomycetes，相对丰度分别为69.10%和13.78%，随坡位的下降，散囊菌纲Eurotiomycetes呈增加趋势，而座囊菌纲Dothideomycetes、锤舌菌纲Leotiomycetes和盘菌纲Pezizomycetes呈先增大后减少的趋势；(2) 坡下铺设的沙柳沙障腐烂程度较坡中与坡上更大，真菌群落多样性与丰富度均为：坡下>坡中>坡上；(3) LEfSe多级物种差异分析表明，田头菇属Agrocybe、粘鞭霉属Gliomastix和木霉属Trichoderma为各组中具有显著性差异的物种(P<0.05)；(4) 冗余分析(redundancy analysis, RDA)结果表明，优势真菌和群落多样性均受到多种环境因子的综合影响，土壤含水率和沙障木质素含量是显著影响菌群丰度和群落多样性的主要环境因子(P<0.05)。本研究结果为进一步探究沙柳沙障腐烂过程中真菌的生态功能提供理论基础。"/>template{display:none;}.mag-rich-xref-fn { cursor: pointer;}//长视频$(document).ready(function(){if($("#showLongArticleVideo") && $("#showLongArticleVideo").length && $("#showLongArticleVideo").length>0){mag_ajax_update({ele_id:'showLongArticleVideo',url:mag_currentQikanUrl() + "/CN/article/showLongArticleVideo.do?id="+$("#articleId").val()});}});//可视化图谱$(document).ready(function(){if($("#showArticle_knowledgeMap") && $("#showArticle_knowledgeMap").length && $("#showArticle_knowledgeMap").length>0){jQuery.getJSON("/Jwxb/CN/lexeme/existsCnctstInArticle.do?articleID="+$("#articleId").val(), null, function(json){if(json.result){$("#showArticle_knowledgeMap").show();}});}});$(document).ready(function(){var metaDataStr = $.trim($("#article_metaJson").val());if(metaDataStr!=''){eval("window.metaData="+metaDataStr);}if(window.metaData && (!window.metaData.authorNotesCommon_cn && !window.metaData.authorNotesCorresp_cn && window.metaData.authorNotes_cn)){window.metaData.authorNotesCommon_cn = window.metaData.authorNotes_cn;}if(window.metaData && (!window.metaData.authorNotesCommon_en && !window.metaData.authorNotesCorresp_en && window.metaData.authorNotes_en)){window.metaData.authorNotesCommon_en = window.metaData.authorNotes_en;}var _nlmdtdXml = $("#article_nlmdtdXml").val();var magDir = _nlmdtdXml.replace(/\/[^\/]+$/,'');window.metaData.magDir = magDir;new mag_vue({ el: '#metaVue', //dataUrl: mag_currentQikanUrl() + '/EN/article/getRichHtmlJson.do?articleId='+$("#articleId").val(), data:window.metaData, loading:true, doTextFun:function(text){ return doDataJsonText(text); 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来源：2023年第7期
《菌物学报》期刊编辑部
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