| 大兴安岭兴安落叶松林土壤微生物分布特征 |
| |
| 引用本文： | 姜海燕,闫伟.大兴安岭兴安落叶松林土壤微生物分布特征[J].浙江林学院学报,2010,27(2):228-232. |
| |
| 作者姓名： | 姜海燕 闫伟 |
| |
| 作者单位： | 内蒙古农业大学,林学院,内蒙古,呼和浩特,010019 |
| |
| 基金项目： | 国家自然科学基金资助项目 |
| |
| 摘 要： | 采用稀释平板法，在内蒙古大兴安岭森林生态系统定位站研究了5种不同林型的土壤微生物数量组成及垂直分布特征。结果表明，兴安落叶松Larix gmelinii林中分布的微生物以细菌占优势，占微生物总数量的80.19% ～ 96.83%；微生物的总数量是杜香Ledum palustre-兴安落叶松林（28.85 × 106个·g-1）＞草类-兴安落叶松林（20.67 × 106个·g-1）＞柴桦 Betula fruticosa-兴安落叶松林（10.08 × 106个·g-1）＞火烧迹地（2.95 × 106个·g-1）＞皆伐兴安落叶松林（2.07 × 106个·g-1）；细菌是杜香-兴安落叶松林（27.18 × 106个·g-1）＞草类-兴安落叶松林（19.80 × 106个·g-1）＞柴桦-兴安落叶松林（9.76 × 106个·g-1）＞火烧迹地（2.69 × 106个·g-1）＞皆伐兴安落叶松林（1.66 × 106个·g-1）；真菌是皆伐兴安落叶松林（28.05 × 104个·g-1）＞柴桦-兴安落叶松林（20.86 × 104个·g-1）＞杜香-兴安落叶松林（12.20×104个·g-1）＞草类-兴安落叶松林（7.93 × 104个·g-1）＞火烧迹地（7.32 × 104个·g-1）；放线菌数量是杜香-兴安落叶松林（15.44 × 105个·g-1）＞草类-兴安落叶松林（7.94 × 105个·g-1）＞火烧迹地（1.86 × 105个·g-1）＞皆伐兴安落叶松林（1.28 × 105个·g-1）＞柴桦-兴安落叶松林（1.08 × 105个·g-1）。土壤中，微生物垂直分布除杜香-兴安落叶松林、草类-兴安落叶松林、柴桦-兴安落叶松林的放线菌为10 ~ 20 cm高于0 ~ 10 cm，其他均是随着垂直深度的增加，各类微生物数量逐渐减少。不同林型土壤微生物的数量、类型及垂直分布存在显著差异（P＜0.05）。图4表1参15
|
| 关 键 词： | 森林土壤学 兴安落叶松 土壤微生物 分布特征 |
Distribution of soil microorganism in Larix gmelinii forests of the Great Xing'an Mountains,Inner Mongolia |
| |
| JIANG Hai-yan,YAN Wei.Distribution of soil microorganism in Larix gmelinii forests of the Great Xing'an Mountains,Inner Mongolia[J].Journal of Zhejiang Forestry College,2010,27(2):228-232. |
| |
| Authors: | JIANG Hai-yan YAN Wei |
| |
| Institution: | JIANG Hai-yan,YAN Wei(College of Forestry,Inner Mongolia Agricultural University,Huhhot 010019,Inner Mongolia,China) |
| |
| Abstract: | The soil microbial distribution of bacteria,fungi,and actinomycetes in five different Larix gmelinii forests(A)Ledum palustre-Larix gmelinii virgin forest,(B)herbage-Larix gmelinii virgin forest,(C)Betula fruticosa-Larix gmelinii virgin forest,(D)Larix gmelinii forest burned-over areas,and(E)clearcut Larix gmelinii forest]in 0-10,10-20,20-30cm soil layers was studied in the National Forestry Ecosystems Station of Inner Mongolia's Great Xing'an Mountains using the dilution-plate method.Results showed that in the different forest types,soil microbes varied in quantity,category,and vertical distribution(P<0.05).Also,bacteria were dominant accounting for 80.2%-96.8%of the microorganisms.Numbers of all microorganisms in the Larix gmelinii forests were in the order:A>B>C>D>E:whereas bacteria were A>B>C>D>E,fungi were E>C>A>B>D,and actinomycetes were A>B>D>E>C.In virgin forests actinomycetes in the 10-20 cm layer were greater than the 0-10cm layer;but vertical distribution of bacteria and fungi decreased(P<0.05)with the increasing vertical depth. |
| |
| Keywords: | forest soil science Larix gmelinii soil microorganism distribution characteristics |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《浙江林学院学报》浏览原始摘要信息 |
|
