研究了亚热带樟树林土壤微生物特征及改变碳输入方式(对照、添加凋落物、去除凋落物、去根添加凋落物、去根去除掉落物、去根)对其数量变化的影响。以稀释平板计数法对土壤中主要微生物类群数量变化进行分析。结果表明:不同处理下微生物总数量分别为去根去除凋落物(67.47×10^3CFU/g)〈去除凋落物(120.36×10^3CFU/g)〈去根(163.67×10^3 CFU/g)〈对照(175.27×10^3CFU/g)〈去根添加凋落物(182.91×10^3CFU/g)〈添加凋落物(205.60×10^3CFU/g);不同处理方式下细菌、真菌、放线菌及其总微生物数量均呈现出添加凋落物会增加土壤微生物数量,去除凋落物会减少微生物数量,根系效应显著。
Quantitative changes of microorganism population was determined with standard dilution plate count method in Cinnamomum camphora forest plantation treated with six treatments,including control with root(CR),extra litter addition with root(LAR),litter removal with root(LRR),extra litter addition without root(LANR),litter removal without root(LRNR),control without root(CNR).The results show that the soil microbe quantity in the plantation sequenced by magnitude:LRNR(67.47×10^3 CFU/g) LRR(120.36×10^3 CFU/g)CNR(163.67×10^3 CFU/g)CR(175.27×10^3 CFU/g)LANR(182.91×10^3 CFU/g)LAR(205.60×10^3 CFU/g).After litter quantity was added,the soil microbe quantity(bacteria,fungi,actinomycetes and total microbe quantity) in the plantation all increased.LRR decreased the soil microbe quantity.Root exudates can significant change the number of microorganism population.