中文摘要：

丛枝菌根（AM）真菌广泛分布于土壤生态系统中,是土壤生物重要的功能组分,对促进土壤演化、保持土壤健康与可持续生产力具有不可替代的作用.盐碱地属于特殊生境之一,在人类活动对自然界的影响、硫和氮沉降增大、臭氧增加、温室效应增强、气候异常、外来生物入侵等一系列因素影响下,盐碱土壤的盐渍化、土壤生物多样性与功能也必然随之变化,进而影响到农林牧业生产和生态系统生产力的可持续发展.在简要介绍全球变化背景下盐碱地面积与次生盐渍化变化特点的基础上,重点综述了盐碱地生境中AM真菌多样性及其功能的变化特征;分析了影响AM真菌多样性与功能的因子及其变化特点,旨在为进一步探讨全球变化背景下盐碱地生境中AM真菌的地位、角色和作用,为有效修复盐碱地农田生态系统提供新的思路和途径.

英文摘要：

Arbuscular mycorrhizal （AM） fungi, widely distributing in various terrestrial ecosys- tems, are one of the important functional biotic components in soil habitats and play a vital role in improving soil evolution, maintaining soil health and sustainable productivity. Saline-alkali soil is a special habitat affecting plant growth and grain yield. Under the influence of a series of factors, such as human activities on the nature, S and N deposition, ozone, greenhouse effect, climate anoma- lies, and alien species invasions etc., soil salinization, biodiversity and functions of saline farmlands may be greatly affected, which could consequently influence agricultural production and the sustain- able development of ecosystems. Followed by an introduction of the changing characteristics of saline soil area and the secondary salinization under the background of global changes, mainly discussed the changing features of diversity and functions of AM fungi summarized the factors influencing AM fungal characters under the global changes, in order the position, role and function of AM fungi in mediation in response to global changes. diversity and functions, and the to provide new ideas and ways in saline soil, and in strengthening the present review in saline habitats, factors＇ changing further elucidating saline farmland re-