3.3 Soil microorganism community change with biochar amendment
ANOVA analysis indicated that total PLFAs did not vary significantly among CK, LK, and HK treatments. PLFAs contents in CK were nearly equal to that in LK and increased to 320 nmol/g in HK treatment.
Biochar addition had great impacts on microorganism species identified by PLFA markers. It was obvious that biomass of BAC and AMF change little and even slightly reduce under LK, but increased greatly by 21% and 24% compared with that in CK treatment though not at a significant level. The increase trends were more obvious for ACT, FUN, PRO, and OB, which increased by 11.5%, 44.1%, 24%, and 108% in HK treatment than those in CK treatment, respectively. The difference of FUN between in HK and CK was at a statistically significant level (Table 3).