| 海南儋州橡胶林与热带次生林土壤微生物区系研究 |
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| 引用本文： | 李君,兰国玉,李玉武.海南儋州橡胶林与热带次生林土壤微生物区系研究[J].热带作物学报,2016,37(3):433-438. |
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| 作者姓名： | 李君 兰国玉 李玉武 |
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| 作者单位： | 1. 中国热带农业科学院橡胶研究所,海南 儋州 571737;宜昌市森林资源监测站,湖北 宜昌 443000;2. 中国热带农业科学院橡胶研究所,海南 儋州,571737;3. 中国科学院西双版纳热带植物园,云南 勐腊,666303 |
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| 基金项目： | 中国科学院西双版纳热带植物园热带森林生态学重点实验室基金项目；中国热带农业科学院橡胶研究所农业部橡胶树生物学与遗传资源利用重点实验室开放课题（No. RRI-KLOF1407）。 |
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| 摘 要： | 采用时空替代法,选取5 a(幼龄林)、10 a(中龄林)、30 a(老龄林)3个年龄的橡胶林,30 a桉树林和热带次生林,研究不同林型下不同微生物类群数量的差异及其随季节的变化。结果表明:不同微生物类群数量大小顺序为细菌﹥放线菌﹥真菌,细菌占微生物总量为93.17%~98.56%,土壤微生物总量大小顺序为幼龄林﹥中龄林﹥次生林﹥老龄林﹥桉树林;不同林型下土壤微生物数量随季节变化差异明显,旱季到雨季,细菌和放线菌数量先减小后增大,不同林型下土壤真菌数量变化不尽相同;在0~30 cm深土壤层内,5种林型下土壤微生物随土壤深度变化不明显;三大土壤微生物类群数量与土壤含水率、土壤p H值之间呈负相关,与土壤有机质含量之间呈正相关。
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| 关 键 词： | 土壤微生物 微生物区系 桉树林 热带次生林 季节变化 |
Comparison on Soil Micro Flora in Rubber Forest and Tropical Secondary Forest in Danzhou, Hainan Island |
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| LI Jun,LAN Guoyu and LI Yuwu.Comparison on Soil Micro Flora in Rubber Forest and Tropical Secondary Forest in Danzhou, Hainan Island[J].Chinese Journal of Tropical Crops,2016,37(3):433-438. |
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| Authors: | LI Jun LAN Guoyu and LI Yuwu |
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| Institution: | 1 Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences 2 The forest resources monitoring station of Yichang City;Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences;Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences |
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| Abstract: | The rubber plantations with the chronosequences of 5 a(young rubber forest), 10 a(middle-age rubber forest)and 30 a(old-aged rubber forest), eucalyptus forest of 30 years and tropical secondary forest were selected to study the differences of different microbial groups under different forest types and its changes with the seasons. Results showed the different microbial groups size order for bacteria, actinomycetes, fungi, and bacteria accounted for 93.17%-98.56% in total microbe. The order of total soil microbial under different forest types for young rubber forest, middle-age rubber forest, tropical secondary forest, old-aged rubber forest, eucalyptus forest; the number of soil microorganism in different forest types was significantly different with the seasonal variation. From the dry season to the rainy season, the number of bacteria and actinomycetes decreased firstly and then increased, and the changes of soil fungi in different forest types were different; in 0-30 cm deep soil layer, the soil microbial biomass under five forest types was not significantly different with the soil depth; there was negative correlation between three major soil microbial groups to soil moisture content and soil pH value. There was positively correlated between three major soil microbial groups to soil organic matter. |
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| Keywords: | Soil microorganisms Micro-flora Eucalyptus forest Tropical secondary forest Seasonal variation |
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