Study on The Influence of Direct Ground Liquid CO₂ Injection on Soil Chemical Properties in Subsidence Areas under Shallow Buried Geological Conditions

Table 6

P5 soil test results.

Number	pH value	Available nitrogen (mg/kg)	Available potassium (mg/kg)	Water-soluble salt (g/kg)	Total organic carbon (TOC) (g/kg)	Total carbon (TC) (g/kg)	Bicarbonate ions () (mg/kg)	Carbonate ions () (mg/kg)
P5FD1	5.40	424.40	32	1.1	2.9	4.97	21.25	0
P5FD2	5.30	424.42	33	1.9	2.9	4.99	21.55	0.15
P5FD3	5.23	471.75	34	0.5	2.5	4.77	21.3	0
P5XD1	5.74	332.91	31	1.6	1.4	2.8	21.6	0
P5XD2	4.56	361.67	36	1.9	4.1	6.78	21.85	0.35
P5XD3	4.80	354.92	33	1.8	3.8	6.45	21.6	0