3.1 Variation in alpine desert SOC and TN and TP in Qinghai
Plateau.
Averaged SOC was approximate 4.86 ± 0.26 g/kg with high variation
coefficient around 81.14% in Qaidam Basin (Table 1). Median value of
SOC was 3.80 g/kg and ranged from 0.54 to 24.34 g/kg with 15 outlier
values over 11.2 g/kg (Figure 2).
Mean total nitrogen was around 4.62 ± 0.25 g/kg with much high variation
coefficient around 82.95% (Table 1). Median value of total nitrogen was
3.64 g/kg ranging from 0.67 to 27.69 g/kg with 17 extreme outlier values
over 10.0 g/kg. Mean and median value of total
phosphorus were 5.20 ± 0.09 and
5.45 g/kg with low variation coefficient ranging from1.81 to 10.67
(Figure 2).