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| 杉木人工林土壤质量演变过程中土壤微生物群落结构变化 | |
| 引用本文： | 刘丽,徐明恺,汪思龙,张倩茹,王楠,潘华奇,胡江春.杉木人工林土壤质量演变过程中土壤微生物群落结构变化[J].生态学报,2013,33(15):4692-4706. |
| 作者姓名： | 刘丽 徐明恺 汪思龙 张倩茹 王楠 潘华奇 胡江春 |
| 作者单位： | 1. 中国科学院沈阳应用生态研究所/森林与土壤生态国家重点实验室,沈阳,110016 2. 中国科学院沈阳应用生态研究所/森林与土壤生态国家重点实验室,沈阳110016;中国科学院会同森林生态实验站,湖南418307 3. 中国科学院沈阳应用生态研究所,沈阳,110016 |
| 基金项目： | 国家自然科学基金项目(41101221,40801093, 40801202) |
| 摘 要： | 以中国科学院会同森林生态站自然林、杉木连栽林和杉木阔叶树混交林地土壤为研究对象,采用PCR-DGGE、DNA-sequencing和主成分分析(PCA)等方法分析土壤微生物群落结构变化及其与土壤质量变化之间的关系.结果表明,该地区杉木人工林土壤中细菌优势种群为α-、β-、γ-proteobacteria和Cytophaga-Flexibacter-Bacterioides (CFB)类群;真菌优势种群为子囊菌(Ascomycetes)和担子菌(Basidiomycetes)亚门的种属.杉木人工林替代自然林后,土壤细菌多样性指数显著降低,且随连栽代数增加呈持续降低趋势;杉木人工林土壤中与Pedobacter cryoconitis亲缘关系密切的细菌种群消失,出现与Xanthomonas sp.和Rhodanobacter sp.亲缘关系密切的细菌种群.土壤真菌群落结构的变化与细菌相反,杉木人工林替代自然林后并不断连栽时,土壤真菌多样性指数呈现上升的趋势,自然林土壤中优势真菌种群在杉木三代林中消失.杉木与火力楠或桤木混交后土壤细菌和真菌种群结构与自然林类似.土壤细菌多样性指数与土壤总有机碳、全氮、可溶性有机碳、铵态氮、速效磷、速效钾含量以及土壤pH值呈显著正相关关系(P＜0.05).土壤真菌多样性指数仅与土壤碳氮比呈显著正相关关系,而与土壤pH值呈显著负相关关系.杉木林土壤质量变化对土壤细菌和真菌优势种群有较大影响,细菌Burkholderia sp.、Pedobactersp.、Xanthomonas sp.和真菌Sclerotinia sclerotiorum、Mycosphaerella cannabis可能是引起土壤质量变化的关键种群. |
| 关 键 词： | 杉木人工林 微生物群落 DGGE PCA 土壤质量 |
| 收稿时间： | 5/2/2012 12:00:00 AM |
| 修稿时间： | 2012/11/15 0:00:00 |
Effect of different Cunninghamia lanceolata plantation soil qualities on soil microbial community structure |
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| LIU Li,XU Mingkai,WANG Silong,ZHANG Qianru,WANG Nan,PAN Huaqi and HU Jiangchun.Effect of different Cunninghamia lanceolata plantation soil qualities on soil microbial community structure[J].Acta Ecologica Sinica,2013,33(15):4692-4706. | |
| Authors: | LIU Li XU Mingkai WANG Silong ZHANG Qianru WANG Nan PAN Huaqi and HU Jiangchun |
| Institution: | State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;Huitong Experimental Station of Forest Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Hunan 418307, China;Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China |
| Abstract: | |
| Keywords: | Cunninghamia lanceolata plantation microbial communities DGGE PCA soil quality |
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