贝壳堤地区微生物分布特征及其与植被分布的关系  

Distribution Characteristics of Soil Microorganisms and Its Relationship with Vegetation in Shell Bars

作　　者：赵艳云[1] 胡相明[2,3] 刘京涛[1] 

机构地区：[1]滨州学院山东省黄河三角洲生态环境重点实验室,山东滨州256603 [2]滨州学院城市与环境系,山东滨州256603 [3]中国矿业大学安全工程学院,江苏徐州221008

出　　处：《水土保持通报》2012年第2期267-270,共4页Bulletin of Soil and Water Conservation

基　　金：国家“十一五”林业科技支撑计划项目“盐碱地改良沿海防护林体系研究与示范”(2009BADB2B05);滨州市2009年科学技术发展计划资助项目﹝滨科技字(2009)24号﹞;滨州学院高层次人才科研启动项目(2006Y06);滨州学院青年人才创新工程(BZXYLG200711);国家自然科学基金项目(31100468)

摘　　要：对山东省无棣县贝壳堤地区芦苇、砂引草、二色补血草、大穗结缕草、碱蓬共5种典型植被群落中土壤微生物的分布特征进行了研究。结果表明,所有植被群落中,微生物含量随土层深度的增加呈逐渐下降的趋势,细菌、放线菌、真菌含量的数量级为104,104和102。8月微生物含量相比6月都有所增加,但不同菌群增幅不同,细菌、真菌和放线菌分别增加0.45,6.16和3.67倍。0—30 cm土层,不同植被群落的微生物含量由高到低的顺序为:二色补血草>大穗结缕草>碱蓬>砂引草>芦苇。大穗结缕草群落中,细菌所占的百分比较大;而芦苇和碱蓬群落放线菌和真菌所占的比例较大。通过对所有植被群落中出现的物种数和土壤的微生物含量进行研究发现,细菌、真菌、放线菌的含量与植被群落的物种数均呈线性关系,相关性达极显著水平(p<0.001)。The distribution patterns of soil microorganisms in five plant communities including Phragmites australis,Boraginaceae,Limonium bicolor,Z.Macrostachys and Suaeda glauca were studied at Wudi shell bars in Shandong Province.The results show that the orders of magnitude of bacteria,fungi and actinomycetes were 104,104,and 102,respectively,in all vegetation communities.The contents of bacteria,fungi and actinomycetes in August were approximately 0.45,6.16,and 3.61 times higher than those in June,respectively.In the soil layer of 0—30 cm,the contents order of microorganisms in the vegetation communities followed a descending order as Limonium bicolorZ.MacrostachysSuaeda glaucaBoraginaceaePhragmites australis.Bacteria dominated in Z.Macrostachys vegetation communities,while the majority of microorganisms were fungi and actinomycetes in plant communities of Phragmites australis and Suaeda glauca.The vegetation species and microorganisms were linearly correlated,with a highly significantly coefficient（p0.001）.

关 键 词：植被群落 微生物 分布特征 贝壳堤 

分 类 号：S154.3[农业科学—土壤学] Q656.3[农业科学—农业基础科学]