首页 | 本学科首页   官方微博 | 高级检索  
   检索      

巨桉人工林地土壤微生物类群的生态分布规律
引用本文:冯健,张健.巨桉人工林地土壤微生物类群的生态分布规律[J].应用生态学报,2005,16(8):1422-1426.
作者姓名:冯健  张健
作者单位:四川农业大学林学园艺学院,雅安,625014
基金项目:国家“十五”科技攻关重点资助项目(2001BA606A-06).
摘    要:研究了四川省洪雅县巨桉人工林地土壤微生物数量及其类群分布规律.结果表明,洪雅县巨桉人工林地土壤微生物数量具有明显的季节变化,各样地均以秋季最多,达到17.42×106 CFU·g-1,春季次之,夏季最少.土壤微生物主要集中在0~20 cm的土层,随着土层的加深,微生物数量迅速减少;在0~60 cm土层,同一类群微生物数量变动范围较大,其中好气性细菌0.31×10 6~14.39×106 CFU·g-1,放线菌0.06×10 6~0.79×106 CFU·g-1,真菌0.02×10 6~0.07×10 6 CFU·g-1,厌氧细菌0.05×106~3.22×106 CFU·g-1.巨桉人工林地微生物以细菌为主要类群,占微生物总数的92.83%以上,其次是放线菌和真菌,其微生物组成结构合理.与青冈次生林和农耕地相比,巨桉人工林地微生物数量远远高于青冈次生林地,有利于土壤微生物生长.细菌生理类群的Simpson多样性指数和Shannon-Wiener多样性指数分别达到0.773和1.896.

关 键 词:巨桉人工林  土壤微生物  生态分布
文章编号:1001-9332(2005)08-1422-05
收稿时间:2005-01-17
修稿时间:2005年1月17日

Ecological distribution patterns of soil microbes under artificial Eucalyptus Grandis stand
FENG Jian,ZHANG Jian.Ecological distribution patterns of soil microbes under artificial Eucalyptus Grandis stand[J].Chinese Journal of Applied Ecology,2005,16(8):1422-1426.
Authors:FENG Jian  ZHANG Jian
Institution:College of Forestry and Horticulture, Sichuan Agricultural University, Ya'an 625014, China. fengjian-0205@163.com
Abstract:In order to find out the ecological distribution patterns of soil microbes under artificial Eucalyptus grandis stand,the amount and distribution of soil bacteria,fungi and actinomycetes in Hongya County of Sichuan Province were investigated in 2004.The results showed that soil microbial population under Eucalyptus grandis stand varied with seasons,being the maximum in autumn,fewer in spring,and the minimum in summer.The numbers were decreased in order of bacteria>actinomycetes>fungi,which were mainly concentrated in 020 cm soil layer,and rapidly decreased with increasing soil depth.In 060cm soil layer,the numbers of aerobic bacteria were 0.3110~614.3910~6,actinomycetes were 0.0610~60.7910~6,fungi were 0.0610~60.7910~6,and anaerobes were 0.0510~63.2210~6 CFUg~(-1).Comparing with artificial C.glauca stand and farming land,Eucalyptus grandis stand had a larger number of soil microbes,suggesting that Eucalyptus grandis was benefit for soil microbial activity.The Simpson and Shannon-Wiener index of the physiological groups of bacteria was 0.773 and 1.896,respectively.
Keywords:Eucalyptus grandis  Soil microbes  Ecological distribution  
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《应用生态学报》浏览原始摘要信息
点击此处可从《应用生态学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号