应用生态学报2016，Vol.27Issue(10)：3361-3370,10.DOI:10.13287/j.1001-9332.201610.034
余姚滨海不同盐碱度土壤微生物群落组成及土壤酶活性的变化
Variations of soil microbial community composition and enzyme activities with different salinities on Yuyao coast, Zhejiang, China
摘要
Abstract
In October 2015,soil samples with different salinity were collected in a coast area in Yuyao,Zhejiang,and soil microbial community composition,soil catalase,urease activities,as well as soil physical and chemical properties were studied.The results showed that Nitrospira took absolute advantage in the bacterial community,and showed good correlations to total potassium.Cladosporium and Fusarium were predominant in the fungal community.Meanwhile,Cladosporium was related to soil urease and total nitrogen,and same correlation was found between Fusarium and soil urease.Catalase activity ranged from 3.52 to 4.56 mL · g-1,3.08 to 4.61 mL · g-1 and 5.81 to 6.91 mL · g-1 for soils with heavy,medium and weak salinity,respectively.Catalase activity increased with the soil layer deepening,which was directly related to soil total potassium,and indirectly related to pH,organic matter,total nitrogen and total phosphorus through total potassium.Soil urease activity ranged among 0.04 to 0.52 mg· g-1,0.08 to 1.07 mg · g-1 and 0.27 to 8.21 mg · g-1 for each saline soil,respectively.Urease activity decreased with soil layer deepening which was directly related to soil total nitrogen,and was indirectly related to pH,organic matter and total potassium through total nitrogen.The total phosphorus was the largest effect factor on the bacterial community CCA ordination,and the urease was on fungal community.关键词
土壤微生物/土壤酶/盐碱土/植被构建/通径分析/典范对应分析Key words
soil microorganism/soil enzyme/saline soil/vegetation restoration/path analysis/canonical correspondence analysis引用本文复制引用
孙慧,张建锋,许华森,陈光才,王利平..余姚滨海不同盐碱度土壤微生物群落组成及土壤酶活性的变化[J].应用生态学报,2016,27(10):3361-3370,10.基金项目
本文由国家林业局“948”项目(2013-4-83)资助 This work was supported by the ‘948’ Project (2013-4-83) from State Forestry Administration of China. （2013-4-83）
