半干旱黄土高原生态区不同土地利用类型土壤可培养微生物群落分析

发布时间：2019-06-10 13:43

【摘要】：对半干旱黄土高原生态区山地干草原、耕地和河谷荒地等不同利用类型土壤可培养微生物进行了研究,结果发现山地干草原土壤可培养细菌、放线菌、真菌数量分别为6.43×10~6cfu·g~(-1)、2.68×10~6cfu·g~(-1)和0.11×10~6cfu·g~(-1),耕地分别为9.27×10~6cfu·g~(-1)、5.33×10~6cfu·g~(-1)和0.07×10~6cfu·g~(-1),河谷荒地分别为2.35×10~6cfu·g~(-1)、2.36×10~6cfu·g~(-1)和0.08×10~6cfu·g~(-1)。山地干草原可培养细菌包括厚壁菌门(Firmicutes)、放线菌门(Actinobacteria)和α变形菌纲(Alphaproteobacteria)的芽孢杆菌属(Bacillus)、微杆菌属(Microbacterium)、节杆菌属(Arthrobacter)和农杆菌属(Agrobacterium),优势菌属为芽孢杆菌属(69.23%),耕地为厚壁菌门、放线菌门、α变形菌纲和γ变形菌纲(Gammaproteobacteria)的芽孢杆菌属、农杆菌属、葡萄球菌属(Staphylococcus)、节杆菌属、假单胞菌属(Peseudomonas),河谷荒地包括厚壁菌门和放线菌门的节杆菌属、葡萄球菌属和类芽孢杆菌属(Paenibacillus),以葡萄球菌属为主(50.00%)。不同类型土壤放线菌以链霉菌属(Atreptomyces)为主,其余包括链孢囊菌属(Streptosporangium)、链轮丝菌属(Streptoverticillium)和小单孢菌属(Micromonspora)。霉菌以青霉属(Penicillium)为主,其余包括曲霉属(Aspergillus)、芽枝霉属(Cladosporium)、毛霉属(Mucor)、镰孢霉属(Coniothecium)和交链孢霉属(Alternaria)。
[Abstract]:The results showed that the number of bacteria, actinomycetes and fungi was 6.43,10 ~ 6 cfu 路 g ~ (-1), 2.68% ~ 6 cfu 路 g ~ (-1) and 0.11 ~ (10 ~ 6) cfu 路 g ~ (-1). The cultivated land is 9.27,10-6cfu/ g-(-1), 5.33-10-6cfu/ g-(-1) and 0.07-10-6cfu/ g-(-1) respectively, and the waste land in the valley is 2.35-10-6cfu/ g-(-1), 2.36-10-6cfu/ g-(-1) and 0.08-10-6cfu/ g-(-1), respectively. The cultivated bacteria of the mountain dry grassland include the bacillus, the microbacterium, the Arthrobacter and the Agrobacterium, and the dominant bacteria belong to the genus Bacillus (69.23%). The cultivated land is a section of the genus Bacillus, Agrobacterium, Staphylococcus, Arthrobacter, and Pseudomonas, which is a thick-walled fungus door, an actinomycete door, a strain of the strain and a strain of the genus Bacillus, and the valley waste land comprises a section of a thick-walled fungus door and an actinomycete, Staphylococci and Paenibacillus, mainly of the genus Staphylococci (50.00%). The different types of soil actinomycetes are the main species of Streptomyces, and the others include Streptosporangium, Streptoverticillium and Micromonospora. The mold is mainly Penicillium, the rest include Aspergillus, Cladosporium, Mucor, Coniothecium and Alternaria.
【作者单位】：兰州理工大学能源与动力工程学院甘肃省生物质能与太阳能互补供能系统重点实验室;兰州理工大学石油化工学院;中石油北京天然气管道有限公司陕西输气管理处;
【基金】：国家自然科学基金(31272694) 中国石油天然气股份有限公司天然气与管道分公司科研项目(2014D-4610-0501)资助
【分类号】：S154.3

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