资源描述：
《甘肃定西华家岭土壤纤毛虫群落对生态恢复的响应》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、动物学研究2011，Apr.32(2):223−231CN53-1040/QISSN0254-5853ZoologicalResearchDOI：10.3724/SP.J.1141.2011.02223甘肃定西华家岭土壤纤毛虫群落对生态恢复的响应1,*121宁应之,王红军,禹娟红,杜海峰(1.西北师范大学生命科学学院,甘肃兰州730070;2.定西师范高等专科学校生化系,甘肃定西743000)摘要：为了解土壤纤毛虫群落对生态恢复下的土壤环境的响应,于2007年9月—2008年8月用活体观察法和“三级十倍环式稀
2、释法”对甘肃定西华家岭5个不同恢复阶段的人工云杉林和1个荒草坡对照点的土壤纤毛虫群落以及季节动态进行了研究,探讨了土壤纤毛虫群落组成对生态恢复下土壤环境的相关性。共鉴定到127种纤毛虫,隶属于3纲9目34科50属。研究发现,各不同恢复年限土样中土壤纤毛虫的物种分布存在明显差异,并随恢复时间的延长,样点间物种相似性减小,群落组成复杂化,丰度、物种数和物种多样性指数均呈上升趋势。优势类群也发生了响应,由I号对照样点和恢复初期II号样点的肾形目变为恢复后期样点的下毛目。结果显示,土壤纤毛虫群落动态很好地响应了生态恢
3、复过程中土壤环境条件的变化。土壤纤毛虫群落可用于陆地生态恢复评价,但要建立有效可行的、具有普遍意义的评价指标体系,尚需大量的和系统的工作。关键词：华家岭;生态恢复;土壤纤毛虫群落;生态响应;季节动态中图分类号：Q959.114.3;Q958.152文献标志码：A文章编号：0254-5853-(2011)02-0223-09ResponseofthesoilciliatecommunitytoecologicalrestorationinHuajialing,Dingxi,Gansu1,*121NINGYing
4、-Zhi,WANGHong-Jun,YUJuan-Hong,DUHai-Feng(1.CollegeofLifeScience,NorthwestNormalUniversity,Lanzhou730070,China;2.DepartmentofBiologyandChemistry,DingxiTeachersCollege,Dingxi743000,China)Abstract:Toobtainabetterunderstandingoftheresponsesofsoilciliatecommunit
5、iestoecologicalrestoration,aquarterlysurveyofthesoilciliatecommunityandseasonaldynamicsacrossfivesamplingsitesofartificialspruceforestwasundertaken.Acontrastsamplingsiteofwildgrasslandwasusedandliveobservationciliatesandthethreelevelten-folddilutionmethodwa
6、susedinHuajialing,Dingxi,Gansu.Atotalof127specieswereidentified,belongingtothreeclasses,nineorders,34familiesand50genera.Resultsshowthatthespeciesdistributionhadobviousdifferencesacrossthesamplingsites,thecommunitystructureofsoiltendedtobecomplicatedandspec
7、iescomparabilitydecreasedgraduallywiththenumberofrestorationyears,andabundance,speciesrichnessandspeciesdiversityindexshowedanupwardtrend.Thedominantgroupsofsoilciliateschangedduringecologicalrestoration.ColpodidawasthedominantgroupinsamplingsiteIandsiteII,
8、whereasHypotrichidawasthedominantgroupinthelaterecoverysamplingsites.Thisstudyshowsthatthedynamicsofthesoilciliatecommunitybetterrespondtosoilconditionchangesintheecologicalrestorationprocess.Althought
