土壤呼吸强度的影响因素及其研究进展

探讨了土壤呼吸的研究情况和各因素对土壤呼吸的影响,提出了土壤呼吸研究尚需解决的问题和研究方向,并进行了展望.

Research on the Factor Aeffecting the Soil Respiration and its Investigation

Soil respiration,mainly produced by soil microorganism and plant roots,is the CO2 evolution process from soil.The flux of carbon to the atmosphere occurs primarily in the form of CO2 and is the result of soil respiration,which makes that the soil respiration is one of the major pathways to influence the global carbon cycle.Increasing release of carbon from the soils could significantly exacerbate the increase of atmospheric CO2 and reinforce the greenhouse warming effect.The research on the soil respiration will be helpful to us comprehensively knowing the global carbon cycle and the global warming.In this paper,the factors affecting soil respiration,such as natural conditions and human activities,were discussed.As a complicate ecological process,the soil respiration is affected not only by the biological factors(vegetation and microorganism,etc.),but also by environmental factors(temperature,moisture and pH,etc.).With the humane impacts,it is influenced more and more strongly by man-made factors,so it is necessity to do more research on it in the future work.