Variation and influencing mechanism of soil multifunctionality in grassland ecosystem
Received date: 2022-12-02
Revised date: 2023-05-10
Online published: 2023-11-30
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.
Key words： grassland ecosystem; global change; soil multifunctionality; soil quality
Zhaobin Song , Ping Yue , Xiangyun Li , Ya Hu , Jingjuan Qiao , Xiaoan Zuo . Variation and influencing mechanism of soil multifunctionality in grassland ecosystem[J]. Journal of Desert Research, 2023 , 43(6) : 151 -165 . DOI: 10.7522/j.issn.1000-694X.2023.00049
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