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林业科学 ›› 2011, Vol. 47 ›› Issue (7): 181-186.doi: 10.11707/j.1001-7488.20110728

• 研究简报 • 上一篇    下一篇

不同栽培历史毛竹林土壤微生物生物量及群落组成变化

孙棣棣, 徐秋芳, 田甜, 刘卜榕   

  1. 浙江农林大学环境与资源学院 浙江省森林生态系统碳循环与固碳减排重点实验室 临安 311300
  • 收稿日期:2010-03-08 修回日期:2011-01-10 出版日期:2011-07-25 发布日期:2011-07-25
  • 通讯作者: 徐秋芳

Investigation on Soil Microbial Biomass and Structure in Phyllostachys edulis Plantations with Increasing Cultivation Time

Sun Didi, Xu Qiufang, Tian Tian, Liu Borong   

  1. College of Environmental & Resource Science, Zhejiang A & F University Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration Lin'an 311300
  • Received:2010-03-08 Revised:2011-01-10 Online:2011-07-25 Published:2011-07-25

关键词: 毛竹林, 栽培历史, 土壤, 磷脂脂肪酸(PLFA), 微生物群落结构

Abstract:

Surface soil (0-20 cm) samples were collected in 2006 from five moso bamboo (Phyllostachys edulis) plantations which were respectively planted in 2002, 1996, 1990, 1980 and 1960 and extensively managed. Dynamics of the soil microbial biomass and diversity with cultivation time of the bamboo plantations were investigated by means of phospholipid fatty acids (PLFAs) analysis. A site of Pinus massoniana (PM) forest nearby with the similar ecological background was selected as a reference. It was found that the average microbial biomass and diversity were lower (P<0.05) in the soil of the bamboo forest planted in 2002 than in that in the natural PM forest, that is, both species numbers and populations of the soil microbes declined in a short term after PM being transformed into bamboo forest. Afterwards, a gradual recovery tendency of microbial biomass and species was observed with increasing cultivation time of the bamboo plantations, and soil average microbial biomass and diversity in 25- and 45-years-old bamboo plantations (respectively planted in 1980 and 1960) were similar with (P<0.05) that in natural PM forest. Statistical analysis of PLFAs data showed that the composition of soil microbial communities in PM forest was obviously different from those in bamboo plantations, and the dissimilarity increased with time of bamboo cultivation. It was concluded that in comparison with PM, long-term extensive management of bamboo plantations did not bring about significant change in soil microbial biomass and diversity, but microbial communities varied with the increasing time of bamboo plantation, indicting bamboo plantation ecosystem under extensive management could develop rich biodiversity and be sustainably developed.

Key words: Phyllostachys edulis plantation, cultivation history, soil, phospholipid fatty acid (PLFA), microbial community structure

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