| 次生林不同演替时间土壤微生物群落结构的变化 |
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| 引用本文： | 郑荧枫,李雪,万晓华,邹秉章,王思荣,黄志群.次生林不同演替时间土壤微生物群落结构的变化[J].亚热带资源与环境学报,2021,16(1):23-28,34. |
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| 作者姓名： | 郑荧枫 李雪 万晓华 邹秉章 王思荣 黄志群 |
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| 作者单位： | 福建师范大学 地理科学学院,福州350007;上杭白砂国有林场,福建 上杭364205 |
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| 基金项目： | 国家杰出青年科学基金资助项目(31625007);国家自然科学基金重点项目(31930077)。 |
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| 摘 要： | 本研究在亚热带地区选取了5个演替阶段(4~5年、8~12年、18~22年、25~30年和35~40年)的次生林为研究对象,采用磷酸脂肪酸的方法研究不同林龄次生林土壤微生物群落结构特征,分析土壤微生物群落结构与土壤理化性质的关系。结果表明:土壤总微生物生物量、真菌生物量、细菌生物量、革兰氏阳性菌生物量和革兰氏阴性菌生物量均在8~12年林分最高。而革兰氏阳性细菌与革兰氏阴性细菌比和真菌细菌比均在4~5年林分最高。主成分分析表明,4~5年林分和25~30年林分次生林土壤微生物群落结构存在显著性差异,其他林龄林分土壤微生物群落结构差异不明显。冗余分析结果表明,土壤碳磷比、pH、铵态氮、土壤容重以及全碳是影响微生物群落的主要环境因子。本研究结果表明,次生林林龄可能通过改变土壤理化性质影响土壤微生物群落结构。
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| 关 键 词： | 次生演替 土壤微生物 群落结构 磷脂脂肪酸 |
Changes of Soil Microbial Community Structure across Different Succession Stages of Secondary Forest |
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| ZHENG Yingfeng,LI Xue,WAN Xiaohua,ZOU Bingzhang,WANG Sirong,HUANG Zhiqun.Changes of Soil Microbial Community Structure across Different Succession Stages of Secondary Forest[J].Journal of Subtropical Resources and Environment,2021,16(1):23-28,34. |
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| Authors: | ZHENG Yingfeng LI Xue WAN Xiaohua ZOU Bingzhang WANG Sirong HUANG Zhiqun |
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| Institution: | (School of Geographical Sciences,Fujian Normal University,Fuzhou 350007,China;Shanghang Baisha State-owned Forest Farm,Shanghang 364205,Fujian,China) |
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| Abstract: | Secondary forests at five succession stages(4~5 a,8~12 a,18~22 a,25~30 a and 35~40 a)in subtropical regions were selected.The phospholipid fatty acid method was used to analyze the soil microbial community composition and the relationship between soil microbial community structure and soil physical and chemical properties was analyzed.The results showed that the total microbial biomass(total PLFAs),fungi biomass,bacteria biomass,gram-positive bacteria biomass and gram-negative bacteria biomass were all the highest in the 8~12 years age class.Gram-positive bacteria:gram-negative bacteria ratio(G+/G-)and fungi:bacteria ratio(F/B)were the highest in the 4~5 years age class.Principal component analysis showed that there were significant differences in soil microbial community structure between 4~5 years age class and 25~30 years age class.However,there was no significant difference in soil microbial community structure in other stand ages.Redundancy analysis showed that carbon to phosphorus ratio,pH,ammonium nitrogen,soil bulk density and soil total carbon were the main environmental factors affecting the microbial community.Forest age affects the composition of soil microbial community mainly by regulating the physical and chemical properties of soil. |
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| Keywords: | succession soil microorganism community structure phospholipid fatty acid |
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