A comparative study of ammonia-oxidizing archaea and bacteria in acidic and alkaline purple soils

Annals of Microbiology

Table 1 Basic properties of the alkaline and acidic purple soils

Samples^a	pH	OM (g kg⁻¹)	TN (g kg⁻¹)	TP (g kg⁻¹)	TK (mg kg⁻¹)	AP (mg kg⁻¹)	AK (mg kg⁻¹)	AN (mg kg⁻¹)	PNR (μg NO₂ ⁻-N g⁻¹ dry soil h⁻¹)
ACI soil	5.10^b	5.11^b	0.55^b	0.21^b	10.60^b	3.80^b	82.00^a	37.70^b	0.07^b
ALK soil	7.50^a	14.20^a	1.27^a	0.64^a	18.30^a	9.40^a	72.50^a	76.30^a	0.36^a

Values are the mean of 3 measurements (n = 3), and values within the same column followed by the different lowercase letters indicate significant differences at P < 0.05
OM, Organic matter; TN, total nitrogen; TP, total phosphorus; TK, total potassium; AN, available nitrogen; AP, available phosphorus; AK, available potassium; PNR, soil potential nitrification rate
^aACI, Acidic purple soil; ALK, alkaline purple soil

ISSN: 1869-2044