不同生态系统土壤呼吸影响因素研究进展

Influencing Factors to Soil Respiration in Different Ecosystems:Research Progress

在“双碳”战略背景下,碳循环过程成为热点研究课题。土壤是植物生存、发展和碳循环的重要载体,土壤呼吸则是影响生态系统碳循环的主要因素。不同生态系统的土壤具有不同特性,且影响土壤呼吸的因素也各有差异。文中以草地、森林、湿地生态系统为例,阐述了各生态系统土壤呼吸的影响因素:1)温度、湿度、降水等因素对上述生态系统的土壤呼吸均可产生影响;2)草地管理模式、草地退化等可影响草地生态系统的土壤呼吸;3)采伐方式、火烧程度、凋落物输入等可影响森林生态系统的土壤呼吸;4)物种入侵和土壤盐度与湿地生态系统土壤呼吸的相关性较高。最后对未来研究进行了展望,以期为不同生态系统土壤呼吸的研究提供参考。

Carbon cycle has become a hot topic of research in the context of"carbon peaking and neutrality"strategy.Soil is important for plant survival,development and carbon cycle,and soil respiration is the main factor affecting carbon cycle in ecosystem.Soil has different characteristics in various ecosystems,and the factors that influence soil respiration also vary.This paper expounds the influencing factors to soil respiration in the ecosystems of grassland,forest and wetland.It is found that:1)Temperature,humidity and rainfall are the factors that can affect the soil respiration in the above mentioned ecosystems;2)Grassland management mode,and grassland degradation can affect soil respiration in grassland ecosystem;3)Ways of cutting,degree of burning and litter input can affect soil respiration in forest ecosystem;and 4)Invasive species and soil salinity can affect soil respiration in wetland ecosystem.At the end,the prospect of the future research on soil respiration is discussed,aimed to provide a reference for the research on soil respiration in different ecosystems.