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2011年9月,采用空间代替时间方法,研究了贵州茂兰国家级自然保护区退化喀斯特森林自然恢复中土壤微生物生物量碳和水溶性有机碳特征.结果表明:研究期间,土壤微生物生物量碳含量、基础呼吸随土壤深度增加而减少,随自然恢复的进程而增加;微生物熵随土壤深度增加和恢复的进程增加;水溶性有机碳含量随土壤深度增加而减少,随自然恢复的进程表层土增加,下层先增加后减少;水溶性有机碳与有机碳的比值随土壤深度增加而增加,随自然恢复的进程而减少;土壤质量、有机碳的质与量随自然恢复的进程而提高,其中微生物量碳变化最大,而水溶性有机碳变化不显著.
In September 2011, the characteristics of soil microbial biomass carbon and water-soluble organic carbon during the natural restoration of degraded karst forest in Maolan National Nature Reserve of Guizhou Province were studied by means of space replacement time.The results showed that during the study period, the microbial biomass carbon Content and basal respiration decreased with the increase of soil depth and increased with the course of natural recovery. Microbial entropy increased with the depth of soil and the recovery process increased. The content of water-soluble organic carbon decreased with the increase of soil depth. With the process of natural recovery, The ratio of water-soluble organic carbon to organic carbon increased with the increase of soil depth and decreased with the process of natural recovery; the quality of soil and the amount and quality of organic carbon increased with the process of natural recovery, of which Microbial biomass carbon had the largest change, but water-soluble organic carbon had no significant changes.