| Abstrakt: |
Taking surrounding woodland soils of Cedrus deodara (Roxb.) G. Don, Prunus ceraifera cv. Pissardii, Ginkgo biloba L. and Ligustrum lucidum in Zhoushan Forest Park of Henan Province as the research objects, the physicochemical properties of sample plots were investigated, and the contents of soil microbial biomass carbon, nitrogen, phosphorus and total soil nutrients were determined. The results showed that the carbon-nitrogen ratios and carbon-phosphorus ratios were 8.0-11.4 and 17.1-25.3, respectively; the percentages of carbon, nitrogen and phosphorus in soil organic carbon (SOC), total nitrogen (TN) and total phosphorus (TP) were 2.84%-5.1%, 2.69%-4.44% and 2.19%-5.62%, respectively. The carbon-nitrogen ratio and carbon-phosphorus ratio of P. ceraifera, G. biloba and L. lucidum forests were significantly lower than that of C. deodara forest (P < 0.05). The MBC/SOC, MBN/TN and MBP/TP ratios of G. biloba forest were the highest, which had significant difference with those of other tree species (P < 0.05). The contents of carbon, nitrogen and phosphorus were extremely or significantly correlated with SOC, TN, TP, tree species and human disturbance, but had no correlation with soil pH, slope, slope direction, etc. Tree species and human disturbance also significantly affected the physical and chemical properties closely related to soil microbial biomass. [ABSTRACT FROM AUTHOR] |
