中国生态农业学报2011，Vol.19Issue(1)：1-7,7.DOI:10.3724/SP.J.1011.2011.00001
不同土壤类型下AM真菌分布多样性及与土壤因子的关系
Arbuscular mycorrhizal fungi diversity and its relationship with soil environmental factors in different soil types
摘要
Abstract
Rhizospheric soil samples were collected from 5 soil types (dark loessial soil, cumulated irrigated soil, cultivated loessial soil, sierozems and aeolian soil) in 6 sampling sites (Liupanshan Mountain forest land, Yinchuan farmland, Nuanquan farmland,Guyuan farmland, Yanchi desert and Lingwu desert) with gramineae vegetation communities.Then the relationship between Arbuscular mycorrhizal Fungi (AMF) diversity and soil environmental factors was investigated.Based on spore morphological characteristics, a total of 5 genera and 48 species of AMF were found in five soil types.Specifically, there were 1 Acaulospora, 3 Gigaspora, 37 Glornus, 1 Paraglomus and 6 Scutellospora species.From the 6 sampling sites, Glomus was the most dominant genera and G geosporum and G manihotis were the most dominant species.Obviously differences were noted in AMF genus frquencies at each sampling site.Glomus was found at every site, its frequency was the highest.Nuanquan farmlands with high plant diversities had relatively high AMF species abundance and diversity.The effects of soil environmental factors on AMF spore density changed with soil and vegetation type.Based on axial principal analysis, total salt, pH, available potassium and available phosphorus mostly explained the relationship between AMF spore density and soil fertility.To a certain degree, the species and distribution of AMF corresponded with vegetation type, plant diversity and soil fertility at the various sampling sites.关键词
丛枝菌根真菌(AM真菌)/多样性/土壤环境因子/土壤类型/根际土壤分类
农业科学引用本文复制引用
马琨,陶媛,杜茜,王占军,蒋齐..不同土壤类型下AM真菌分布多样性及与土壤因子的关系[J].中国生态农业学报,2011,19(1):1-7,7.基金项目
"十一五"国家科技支撑计划项目(2007BAD54B05)、宁夏科技攻关项目(NXGJ2009-3)和宁夏自然科学基金项目(NZ0956)资助 （2007BAD54B05）
