荒坡地种植巨菌草对土壤微生物群落功能多样性及肥力影响.docVIP

荒坡地种植巨菌草对土壤微生物群落 功能多样性及土壤肥力的影响 林兴生1，林占熺1*，林冬梅1，林辉1，罗海凌1，胡应平1，林春梅1，朱朝枝2 (1. 福建农林大学菌草研究所，福建 福州 350002；2. 福建农林学金山学院，福建 福州 350002) 关键词；中图分类号： 文献标识码： 文章编号： Effect of Pennisetum sp. Planted in the Barren Hillside on Soil Microbial Community Function Diversity and Fertility LIN Xingsheng1, LIN Zhan-xi1, LIN Dong-mei1, LIN Hui1, LUO Hai-ling1, HU Ying-ping1, LIN Chun-mei1, ZHU Chao-zhi2 (1.Juncao Research Institute, Fujian Agriculture and Forestry University, Fuzhou 350002, China; 2.Jinshan College, Fujian Agriculture and Forestry University, Fuzhou 350002, China) Abstract: To study effect of Pennisetum sp. planted in the barren hillside for 1, 2, 3 and 5 years on the soil microbes community function diversity and the influence of fertility, the results indicated that carbon sources utilization for soil microbial increase as culture time went, change was the most obvious when cultured by 72 ~ 96 h, AWCD value reached the maximum when cultured by 144 h. Generally, AWCD was that of Pennisetum sp. planted for 2 years 3 years 1 year 5years CK , AWCD of Pennisetum sp. planted was higher than CK with significant difference, AWCD was highest for Pennisetum sp. planted by 2 years , followed by 3 years. Difference between 1 and 5 years was not significant. Principal component analysis of carbon source characteristics for soil microbial cultured by 96 h was done, principal component 1 and principal component 2 were able to distinguish among soil microbial community characteristics, 收稿日期：2012-09- 基金项目：科技部项目（国科发计[2011]685号）；国家林业公益性行业科研专项（201004019）；福建省科技重大项目(2009N5001)资助． 作者简介：林兴生（1973- ），男，福建人，副研究员，博士生，主要从事菌草技术研发、推广、援外和国际培训，E-mail:wittylin@163.com；*通讯作者Author for correspondence，E-mail:singelin@163.com Pennisetum sp. planted by 2 years and 3 years was significantly different with CK. SHANNON (H), EVENNESS and BRILLOUIN index of Pennisetum sp. planted were higher than CK with significant difference, Pennisetum sp. planted by 2 years and by 3 years ha