生态学杂志2013，Vol.32Issue(1)：64-71,8.
不同年限茶树根际土壤微生物群落PLFA生物标记多样性分析
Microbial diversity in rhizosphere soils of different planting year tea trees: An analysis with phospholipid fatty acid biomarkers
摘要
Abstract
By using phospholipid fatty acid biomarkers (PLFAs), this paper studied the microbi-al diversity in the rhizosphere soils of 1 -, 6-, and 20-year-old tea trees. In the rhizosphere soil of 6-year-old tea trees, the total amount of PLFAs was the highest, and the PLFAs contents of bac-teria , actinomycetes, and protozoa were higher than those in the other rhizosphere soils. The rhi-zosphere soil of 20-year-old tea trees had a higher content of fungi PLFAs but lower contents acti-nomycetes and protozoa PLFAs than the other rhizosphere soils, whereas the content of bacterial PLFAs was close to that in the rhizosphere soil of 1-year-old tea trees. In the rhizosphere soil of 20-year-old tea trees, the abundance of several microbial groups participating in soil nutrient cyc-ling declined, while the abundance of several microbial groups with low metabolic capacity in-creased. As compared with those in the rhizosphere soil of 6-year-old teat trees, the activities of urease, phosphomonoesterase and peroxidase in the rhizosphere soil of 20-year-old tea trees were lower, while the activities of invertase and polyphenol oxidase were higher. In the rhizosphere soils of different planting year tea trees, the PLFAs of different microbial groups were closely cor-related to the soil enzyme activities and fertility factors. With the increasing year of tea planting, the microbial community structure in rhizosphere soils changed greatly, reflecting in the decline of microbial diversity and the increase of the microbial groups with low metabolic capacity and adapting to poor soil condition, and the soil quality and the activities of some key enzymes had a larger decrement.关键词
茶树/根际土壤/磷脂脂肪酸标记/微生物群落/土壤酶活性Key words
tea tree/rhizosphere soil/phospholipid fatty acid biomarker/microbial community/soil enzyme activity分类
生物科学引用本文复制引用
林生,庄家强,陈婷,张爱加,周明明,林文雄..不同年限茶树根际土壤微生物群落PLFA生物标记多样性分析[J].生态学杂志,2013,32(1):64-71,8.基金项目
福建省教育厅重点项目(JA11075)资助. （JA11075）
