植物功能性状对森林土壤有机质积累影响的研究进展

Effect of plant functional traits on soil organic matter accumulation in forests:A review

植物功能性状是植物为适应外界环境而表现出的个体特征和属性,影响植物的存活、生长与繁殖,并且对土壤功能也产生影响。本文通过汇总已有研究,进行了如下总结:1)分析了植物功能性状的分类及其与土壤肥力的关系;2)明确了植物功能性状对土壤有机质积累的影响,以及影响方向和强度受土壤氮磷循环与碳饱和状态的作用。此外,从植物功能性状与土壤有机质组分和稳定性的关系方面探讨了植物功能性状对土壤有机质长期积累存留的影响;3)探讨了森林生态系统植物功能性状影响土壤有机质的凋落物和微生物作用机制。在此基础上,提出未来植物功能性状与土壤有机质研究重点,包括:通过先进的技术和方法,明确植物功能性状与土壤有机质积累的植物⁃微生物互作过程和机理,阐明全球变化背景下植物功能性状对土壤有机质积累影响的生态过程和机理。

Plant functional traits are the individual characteristics and attributes shown by plants to adapt to envi⁃ronment,which affect the survival,growth,and reproduction of plants,and soil ecological functions as well.Here,we summarized literature on the relationships between plant functional traits and soil organic matter from three aspects.Firstly,we analyzed the classification of plant functional traits and clarified the relationship between plant functional traits and soil fertility.Secondly,we clarified the effects of plant functional traits on soil organic matter accumulation.The direction and magnitude of such effects were influenced by soil nitrogen and phosphorus cycling and soil carbon saturation status.We discussed the relationships between plant functional traits and soil organic mat⁃ter stability and long⁃term soil organic matter accumulation.Thirdly,we elucidated the mechanisms of plant func⁃tional traits influencing forest soil organic matter by means of leaf litter,fine root decomposition and soil microbial community structure and function.Then,we proposed two key issues of the future research focusing on plant func⁃tional traits and soil organic matter:(1)to understand the processes and mechanisms that plant⁃microbial interac⁃tions influence plant functional traits and soil organic matter accumulation via advanced technology and methods;(2)to clarify the ecological processes and mechanisms driving the impacts of plant functional traits on soil organic matter accumulation under the background of global change.