陆地生态系统有机碳储量和碳排放的研究进展

Advance in Organic Carbon Stock and Carbon Emission in Terrestrial Ecosystem

陆地生态系统土壤有机碳储量和土壤呼吸的微小变化,会引起大气CO2浓度的巨大变化以及全球碳循环的明显改变,从而引起全球气候的巨大变化。提高SOC储量、减少土壤CO2排放对减缓大气CO2浓度升高具有重要意义。根据国内外文献数据资料,综合分析陆地生态系统土壤有机碳储量和土壤呼吸的研究进展,并对最近土壤呼吸影响因素的研究热点因子,如土壤温度、土壤水分、大气降水和耕作等进行分析讨论,指出陆地生态系统碳循环研究中应重点加强土壤呼吸的机理、土壤呼吸影响因素、土壤呼吸模型、土壤固碳措施、减排对策的研究。

Global warming is one of the urgent environmental problems.Carbon cycle takes a major role in climate changes,which becomes a hot issue interesting more and more scientists.The fractional change of SOC pool and soil respiration may cause violent changes in the climate of the earth.Increasing SOC sequestration and reducing soil carbon dioxide emissions play an important role for relieving global warming.Based on the previous research,the author mainly discusses the research and prospects for soil organic carbon stock and carbon dioxide missions.Meanwhile,the author also analyzes the factors of soil respiration,such as soil temperature,soil water content,atmospheric precipitation and tillage.The author discusses key issues and further tasks,including the mechanism of soil respiration,the factors of carbon emissions,the carbon sequestration and the measures for emission reduction.