东祁连山高寒草地土壤微生物三大类群的时空动态特征  被引量:20

Spatiotemporal and Characteristic of the Soil Microbial of Alpine Grassland in Eastern Qilian Mountains

在线阅读下载全文

作  者:张俊忠[1] 陈秀蓉[1] 杨成德[1] 胡宜刚[1] 王国荣[1] 韩玉竹[1,2] 徐长林[1] 

机构地区:[1]甘肃农业大学草业学院,草业生态系统教育部重点实验室,中-美草地畜牧业可持续发展研究中心,甘肃兰州730070 [2]西南大学荣昌校区动物科学系,重庆荣昌402460

出  处:《水土保持学报》2008年第5期167-171,共5页Journal of Soil and Water Conservation

基  金:国家自然基金项目(30471232);甘肃省中青年基金(3YS41-A25-009);甘肃省“555”人才工程

摘  要:通过对2005年和2006年东祁连山高寒草地4种不同草地类型(珠芽蓼草地、禾草草地、沼泽草地、嵩草草地)土壤3大类群微生物(真菌、细菌、放线菌)数量的时空动态进行研究。结果表明:(1)不同空间层次草地土壤3大类群微生物数量变化均较大,0-10 cm土层的数量为10-20 cm土层的1.02-3.89倍;(2)不同植被下土壤3大类微生物数量季节变化各有其自身的特点,年际变化也不一致;(3)不同植被下同一时间草地土壤三大类群微生物总数量差异较大,为0.83×10^7-4.71×10^7个/g;(4)三大类微生物中,细菌数量最大,放线菌次之,真菌最小,分别占微生物总数的48.9%-67.69%,32.18%-48.96%和0.08%-0.25%。The number and distributions of soil microorganism (fungi, actinomycete and bacteria) spatiotemporal characteristics of 4 different alpine grasslands (Polygonum grassland, Grass grassland, Swamp grassland,Kobresia grassland) in 2005 and 2006 were studied. The results obtained were as follows: (1) The quantities of microbial were different with soil depth,the number was much higher within 0-10 cm than that within 10-20 cm (1.02-3.89 times) ; (2) The distribution of microorganisms were also different from each other in different alpine grasslands with month; (3) Total number of microorganism was much different among same vegetation and it ranges from 0.83×10^7/g soil to 4.71 × 10^7/g soil. (4) Among the microorganisms,the number of bacteria is the highest (50.79%-67.69%),then followed by actinomycete (32.18%- 48.96%) ,fungi is lowest (0.08%-0.25%). Bacteria and actinomycete account for more than 99% of total.

关 键 词:高寒草地 土壤微生物 时空动态 东祁连山 

分 类 号:S154.3[农业科学—土壤学]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象