森林土壤活性有机碳影响因素

Factors Affecting the Forest Soil Active Organic Carbon

森林土壤有机碳是全球碳循环的重要组成部分,其中,活性部分占总有机碳的很小一部分,却直接参与土壤生物和化学转化过程,因而,土壤有机碳活性组分对土壤碳库平衡和土壤化学、生物化学肥力保持具有重要意义。研究发现,气候、植被、土壤理化性质以及人类活动等因子影响着土壤有机碳在碳循环过程中的动态平衡。本文从以下三个方面综述森林土壤活性有机碳组分的主要影响因子,土壤含水量、季节变化与温度和土地利用与管理措施等对土壤活性有机碳影响较大。

Forest soil organic carbon is an important part of global carbon cycle,in which the active part only accounts for a small portion of the total organic carbon,but it directly involves in soil biological and chemical conversion process.Therefore,the active components of soil organic carbon has important significance on the balance of soil carbon stocks and conservation of soil chemical and biochemistry fertility.Studies showed that climate,vegetation,and soil physical and chemical properties as well as human activities have impacts on the dynamic balance of soil organic carbon in the carbon cycle.This paper reviews the main affecting factors of forest soil active organic carbon,including soil water content,seasonal variation and temperature,land use and management.