大气CO_2浓度升高对农田土壤微生物及其相关因素的影响

Effect of atmospheric CO_2 enrichment on soil microbes and related factors

综述了大气CO2 浓度升高条件下 ,农田土壤微生物区系、土壤呼吸、土壤微生物生物量 ;植物 微生物共生体———内生菌根、根瘤及其与农田土壤微生物活动相关因素发生的变化 .该方面的研究虽然受实验条件限制 ,在国内外开展研究的持续时间较短 ,但现有的研究表明 ,大气CO2 浓度升高主要通过影响植物生长而间接影响农田土壤微生物活性 .

This paper summarized the effects of atmospheric CO 2 enrichment on soil microbes and their related factors,including soil microflora,soil respiration,soil microbial biomass,and higher plant microbe symbiosis. The factors related to soil microbic activity such as litter decomposition,root exudates,soil nutrient availability,nutrient use efficiency and soil fauna were also affected by the CO 2 enrichment.