Soil properties associated with microbe in different types of Gannan grassland

In Gannan region of Gansu province, the numerical sizes of respiration rates of different grassland type soils are: swamping meadowalpine shrub meadowalpine meadowsubalpine meadowupland meadow (0-15 cm), swamping meadowsubalpine meadowupland meadowalpine shrub meadowalpine meadow (15-30 cm), and swamping meadowupland meadowsubalpine meadowalpine meadowalpine shrub meadow (30-60 cm). The numerical sizes of soil microbial biomass carbon of different grassland type soils are: swamping meadowalpine shrub meadowalpine meadowsubalpine meadowupland meadow (0-15, 15-30 cm), and swamping meadowsubalpine meadowalpine shrub meadowalpine meadowupland meadow (30-60 cm). Respiration and microbial biomass carbon of different grassland type soils decreased with soil depth, while respiratory quotient increased and microbial quotient has no significant change. There was a significant positive correlation (P0.01) between respiration, microbial biomass carbon and soil moisture, total organic carbon, total nitrogen, and a significant negative correlation (P0.01) between respiratory quotient and soil moisture, total organic carbon, total nitrogen. A significant positive correlation (P0.01) exists between microbial quotient and soil moisture, total nitrogen, while a significant negative correlation (P0.01) exists between microbial quotient and total organic carbon.