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时间:2019-03-05
《黄土高原不同树龄刺槐丛枝菌根与根际微生物的群落多样性》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、第44卷第4期林业科学v01.44。N。.42008年4月ScIENrnASIIⅣAESINIcAEApr.,2008黄土高原不同树龄刺槐丛枝菌根与根际微生物的群落多样性*杜小刚1唐明1陈辉1张海癌2张永安3(1.西北农林科技大学林学院杨凌712100;2.西北农林科技大学生命科学学院杨凌712100;3.中国林业科学研究院森林生态环境与保护研究所北京100091)摘要:采用B10LOG检测法,研究丛枝菌根与黄土高原不同树龄刺槐人工林及次生林根际微生物群落多样性的关系。结果表明:8、15、23和30年刺槐人工林随着树龄的增加,菌根侵染率先增加
2、后降低,微生物活性(AwcD值)增大,碳源代谢丰富度指数(s)和shalInon指数(日)逐渐增加,23年达到峰值后趋于稳定,并逐渐降低,不同林地菌根侵染率与根瘤数呈显著正相关(y=414.82茹一188.73,r=O.927,p3、,在造林年限上表现为对较短树龄刺槐林根际微生物群落影响较大,在造林措施上对刺槐次生林微生物群落多样性的作用优于人工林。关键词:刺槐;菌根侵染率;B10LOG;微生物群落;功能多样性。中图分类号:s718.8l文献标识码:A文章编号:1001—7488(2008)04—0078一05MycorrlIizae粕dDive聪ityofMicrobialCo删muIlityinR眦z晒phereSoilsof月D西伽缸筇P黝轨日砒atDiffbrentAg鹤ontheL伽辎Plat明uDuXiaogan91TangMin91ChenHuilZhang4、Hai5、lan2ZllangYong’anj(1.c弛咎旷,0W打y,脚h枷鼬7b矾£胁m砂旷船廊础肿4耐,.om竹跏副f,lg712100;2.C机妇e矿£咖鲥m∞,胁鼬鼬M‰蚵旷岍础啪删胁唧吲旧712100;3.胁赫肺析脯旷Fo删&蝴’,Er%锄,w,lIm证^Dte幽n,cA,&坑增l00091)Abstr躯t:耶1erelationshipofnlycoⅡ}Iizaeanddive璐ityofIIlicrobialcommuni哆inrllizosphe∞soils0f舶6讥施pse硼bnc伽施plamation蚰dsecondaIy6、plantationatdi日.emntagesontheLoessPlateauw鹊measured“thbyBIO【JoGmethod.hw嬲foundthatin8,15,23and30afor}estland,埘ththeageincmased,themycordhizalin&tionmteincI.easedattheearlyplantationstageandthendeclined.-11leavemgewellcolordevelopment(AWCD)incIea眈d.Thelichnessindex(S)andtheS7、llan∞nindex(日)incmasedattheearlystageand聊lchedt0peakValueat23aandthengmduallydeclined,nemycorr}lizali也ctionmteweresignificantlycorrelated诵ththenumberof∞duleswe陀sigIli6camcorrelation(,,=414.82髫一188.73,r=0.927,p8、hatwiththeagesiIlc陀鸽ed,thelIlicrobidcommunitystmctureandfunctioninrhizosphere∞ils0fR.p靶砌∞伽i口plank吐ionexistedcominuityofthetime.Thesecondaryforestpe面nledbetterthanthesameagepl粕tation,anditscapacityofcarbonutilizationw∞siIIlilartothatofthe01derplantation.Theco】树ationarlalv3i89、ofthemvcoⅡhizaliTIfection船teandthenumberofnodules,thermmberofbacteriacol0IIies,the
3、,在造林年限上表现为对较短树龄刺槐林根际微生物群落影响较大,在造林措施上对刺槐次生林微生物群落多样性的作用优于人工林。关键词:刺槐;菌根侵染率;B10LOG;微生物群落;功能多样性。中图分类号:s718.8l文献标识码:A文章编号:1001—7488(2008)04—0078一05MycorrlIizae粕dDive聪ityofMicrobialCo删muIlityinR眦z晒phereSoilsof月D西伽缸筇P黝轨日砒atDiffbrentAg鹤ontheL伽辎Plat明uDuXiaogan91TangMin91ChenHuilZhang
4、Hai
5、lan2ZllangYong’anj(1.c弛咎旷,0W打y,脚h枷鼬7b矾£胁m砂旷船廊础肿4耐,.om竹跏副f,lg712100;2.C机妇e矿£咖鲥m∞,胁鼬鼬M‰蚵旷岍础啪删胁唧吲旧712100;3.胁赫肺析脯旷Fo删&蝴’,Er%锄,w,lIm证^Dte幽n,cA,&坑增l00091)Abstr躯t:耶1erelationshipofnlycoⅡ}Iizaeanddive璐ityofIIlicrobialcommuni哆inrllizosphe∞soils0f舶6讥施pse硼bnc伽施plamation蚰dsecondaIy
6、plantationatdi日.emntagesontheLoessPlateauw鹊measured“thbyBIO【JoGmethod.hw嬲foundthatin8,15,23and30afor}estland,埘ththeageincmased,themycordhizalin&tionmteincI.easedattheearlyplantationstageandthendeclined.-11leavemgewellcolordevelopment(AWCD)incIea眈d.Thelichnessindex(S)andtheS
7、llan∞nindex(日)incmasedattheearlystageand聊lchedt0peakValueat23aandthengmduallydeclined,nemycorr}lizali也ctionmteweresignificantlycorrelated诵ththenumberof∞duleswe陀sigIli6camcorrelation(,,=414.82髫一188.73,r=0.927,p8、hatwiththeagesiIlc陀鸽ed,thelIlicrobidcommunitystmctureandfunctioninrhizosphere∞ils0fR.p靶砌∞伽i口plank吐ionexistedcominuityofthetime.Thesecondaryforestpe面nledbetterthanthesameagepl粕tation,anditscapacityofcarbonutilizationw∞siIIlilartothatofthe01derplantation.Theco】树ationarlalv3i89、ofthemvcoⅡhizaliTIfection船teandthenumberofnodules,thermmberofbacteriacol0IIies,the
8、hatwiththeagesiIlc陀鸽ed,thelIlicrobidcommunitystmctureandfunctioninrhizosphere∞ils0fR.p靶砌∞伽i口plank吐ionexistedcominuityofthetime.Thesecondaryforestpe面nledbetterthanthesameagepl粕tation,anditscapacityofcarbonutilizationw∞siIIlilartothatofthe01derplantation.Theco】树ationarlalv3i8
9、ofthemvcoⅡhizaliTIfection船teandthenumberofnodules,thermmberofbacteriacol0IIies,the
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