Spatial distribution of arbuscular mycorrhizal fungi and glomalin of Hippophae rhamnoides L in farming-pastoral zone from the two northern provinces of China

作者：He Bo · 年份：2011 · 被引用次数：12 · 研究领域：Mycorrhizal Fungi and Plant Interactions、Forest Ecology and Biodiversity Studies、Aeolian processes and effects

Arbuscular mycorrhizal fungi(AMF) are important functional components of ecosystems and are the most widely distributed microbes among the soil microorganisms.Glomalin,which is produced by AMF,is a kind of glycoprotein that can be extracted from soil.Its ubiquity,coupled with apparent recalcitrance of glomalin and consequent long residence time in soil,can result in glomalin comprising large pools of soil carbon and nitrogen.Hippophae rhamnoides L is one of the excellent sand-fixation plants that can not only well adapt to arid desert environment,but also fix sand and improve the texture or fertility of soil,so as to keep the balance and stability of the desert ecosystem.In this paper,the spatial distribution of AMF and glomalin,and the relativity of AMF and glomalin with environmental factors in rhizosphere of Hippophae rhamnoides L were investigated in farming-pastoral zone between Inner Mongolia and Hebei province.In July 2009,we collected the root and soil samples from three different sample sites,which are Da Liandi,Huang Liutiao and east of Duo Lun,respectively.Root samples were collected from four robust Hippophae rhamnoides L,and soil samples were collected from three sample sites and divided into five layers on the basis of depth,from top to bottom: 0-10 cm,10-20 cm,20-30 cm,30-40 cm,40-50 cm,respectively.The results showed that a good symbioses relation is formed between AMF and Hippophae rhamnoides L.Mycorrhizal type is Arum-type.The distribution and activity of AM...