草原是陆地生态系统的关键组成部分，为维持区域生态安全发挥着极为重要的作用。土壤多功能性（soil multifunctionality，SMF）是衡量土壤系统提供多种功能的综合指标，对评估草原生态系统功能和区域可持续发展具有重要指导意义。然而，目前SMF研究仍处于初步阶段，研究对象多为农田生态系统，对于草原等自然生态系统的研究较少。此外，对草原生态系统SMF与植物和土壤微生物的关系以及全球变化对草原生态系统SMF影响机制的认识十分有限。因此，本文从SMF的概念和内涵、量化指标及方法、植物和土壤微生物与SMF的关系、全球变化对SMF的影响以及SMF的空间变异性5个方面论述SMF的研究进展，梳理了草原生态系统SMF的变化特征及影响机制。根据当前研究中存在的问题提出了今后研究应重点关注的内容：（1）统一规整SMF量化体系；（2）SMF在不同空间尺度上的转换机制；（3）不同类型草原生态系统SMF驱动机制；（4）土地利用变化、降水增加、气候变暖和氮沉降等全球变化交互作用对SMF的影响；（5）地上植物功能与SMF的联系和互馈机制；（6）根系功能性状对SMF的影响和植物在不同组织水平对SMF的贡献；（7）微生物稀有种群以及植物-土壤动物-土壤微生物多营养级联动对SMF的影响。

Grassland is a crucial part of terrestrial ecosystem and plays an important role in maintaining regional ecological security. Soil multifunctionality （SMF） is a comprehensive index to measure the provided soil multiple functions， which has imperative significance for assessing grassland ecosystem function and regional sustainable development. However， the current SMF studies are still in the initial stage， and the objects in studies are mostly farmland ecosystems， while there are relatively few studies on grassland and other natural ecosystems. In addition， there is few ecolgoists to elucidate the relationship among SMF of grassland ecosystems， plant and soil microorganisms， as well as the effect of global change on SMF in grassland ecosystems. Therefore， this paper discusses the study progress of SMF from five aspects： the concept of SMF， quantitative indicators and methods， the relationship among plants and soil microorganisms and SMF， the impact of global changes on SMF and the spatial variability of SMF， and reviews the change and mechanisms of SMF in grassland ecosystems. Based on the existing problems in the existing studies， the following topics should be focused on： （1） Unified SMF quantitative methods； （2） The transformation mechanism of SMF at different spatial scales； （3） SMF driving mechanism of different grassland ecosystems； （4） Impacts of global changes such as precipitation increase， climate warming and nitrogen deposition， and land use change on SMF； （5） The relationships and interactions between above-ground ecological functions and SMF； （6） Effects of root functional traits on SMF and contributions of plants to SMF at different scale levels； （7） The contribution of rare species of microorganisms and plant-soil animal-soil microbial multitrophic linkage on SMF.