森林土壤有机碳的影响因子及其研究进展

Influencing Factors of Forest Soil Organic Carbon and Its Research Progess

森林是陆地生态系统的重要组成部分,是大气温室气体的重要源与汇,在区域和全球碳循环中发挥着关键作用。森林土壤有机碳作为土壤碳库重要组成部分,其积累和分解的变化直接影响陆地生态系统的碳贮藏。了解森林土壤有机碳的影响因子可为全面理解土壤有机碳的特征及其关键控制因素提供帮助。为此,本文综述了气候变化(温度、降水、CO_(2)浓度)、自然调控因素(植被类型、土壤理化性质)、人为调控因素(土地利用方式、施肥、林火)对森林土壤有机碳的影响,并提出了相关的研究展望。

Forests are an important part of terrestrial ecosystems and an important source and sink of atmospheric greenhouse gases.They play a key role in regional and global carbon cycles.Forest soil organic carbon is an important part of the global carbon cycle,and its accumulation and decomposition changes directly affect the carbon storage of terrestrial ecosystems and the global carbon balance.Climate change affects plant photosynthesis,decomposition and transformation of soil organic carbon,and then a ffects forest soil organic carbon storage and soil carbon dynamics.Understanding the adaptation of forest soil organic carbon to climate change is helpful for people to manage forest carbon pool scientifically and provide theoretical and technical support for further finding feasible ways to alleviate climate change.Therefore,this paper summarizes the effects of climate change(temperature,moisture,CO_(2)concentration),natural regulation factors(vegetation types,soil physical and chemical properties),and human regulation factors(land use patterns,fertilization,forest fires)on forest soil organic carbon,and puts forward relevant research prospects.