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| 暖温带针阔叶林下土壤微生物区系群落特征及其动态研究 |
| Soil Microbial Community Characteristics and Dynamics under a Warm Temperate Coniferous and Broadleaf Forest |
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| DOI：doi:10.3969/j.issn.1005-7021.2016.03.002 |
| 中文关键词: 土壤微生物特征 林地转化 阔叶林 针叶林 暖温带 |
| 英文关键词: soil microbial characteristics forest-land conversion broadleaf forest coniferous forest warm temperate zone |
| 基金项目:国家自然科学基金项目(41161080)；甘肃省科技计划项目(2010GS05134) |
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| 中文摘要: |
| 实施森林分类经营导致土壤微生物生态的变化，是保护区生态环境监测的任务之一。结合甘肃天水小陇山土壤微生物多年调研资料，在总结针叶林和阔叶林下微生物群落特征的基础上，比较了阔叶林转化为针叶林后土壤微生物的动态。结果表明：①暖温带阔叶林土壤微生物数量和分布特征的生态幅较小，针叶林较大；②针阔林下土壤微生物群落优势菌属相同，但针叶林的优势属葡萄球菌属（Staphylococcus）及稀有菌属头孢霉属（Cephalosporium）在阔叶林未出现，阔叶林常见属交链孢霉属（Alternaria）在针叶林未出现；③暖温带阔叶林土壤微生物多样性指数均大于针叶林，针、阔叶林下功能菌群类型且其数量排序基本一致；④阔叶林转变为针叶林后，对不同时期土壤微生物群落的数量、分布、种属组成、多样性和功能菌群等特征的全面分析认为，土壤微生物逐步适应了地上植被的变化，即微生物与环境关系的建立与地上植被类型的关系更密切。 |
| 英文摘要: |
| It is one of the tasks of ecological environment monitoring that the change of soil microbial ecology in preservation zone caused by implementing forest classification management. This article compared the dynamic of soil microorganisms after transferring broadleaf forest into coniferous forest combined with microbial community characteristics of investigation and research data in many years in Mt. Xiaolong, Tianshui, Gansu and based on summarized the characteristics of the microbial community under the coniferous and broadleaf forests. The results showed that the region ① in warm temperate zone the broadleaf forest soil microbial quantity and the ecological range of distribution characteristics was fairly small, but fairly large in coniferous forest; ②The dominant bacteria genera of soil microbial communities were the same in the coniferous and broadleaf forests, but the dominant genus of Staphylococcus in coniferous forest and rare genus of Cephalosporium in broadleaf forest did not appear, and common genus of Alternaria in coniferous forest did not appear; ③ in warm temperate zone the soil microbial diversity index in broadleaf forest were all greater than in coniferous forest. The functional bacteria types and quantity sequence were basically identical in coniferous and broadleaf forest; ④ comprehensive analyses of the quantity, distribution, component of species and genera, diversity and function, and other characteristics of soil microbial community in different periods, it is believed that after transferring broadleaf forest into coniferous forest, the soil microbes gradually adapt to the variation of the ground vegetation, i.e. the establishment of the relationship between microorganisms and environment and the types of ground vegetation had much closely related. |
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