Table 1. Comparison with other studies on SOC change and durations of C sequestration.

Treatment	Study region	Sample size	ΔSOCP (%)	ΔSOC (g kg−1)	RCR (g kg−1 yr−1)	Experiment duration (yr)	C sequestration duration (yr)	Reference
CFM	Global	130	26.0	5.0	0.28	18	–	Maillard and Angers15
	Mediterranean croplands	93	26–48	–	–	7.4	–	Aguilera et al.32
	China	201	–	–	0.34	–	45–51	Tian et al.31
	South China	145	–	5.1	0.31	16	55–64	Zhu et al.29
	Yangtze Delta Plain, China	27	–	–	0.17	–	40	Rui and Zhang28
	Global	652	36.2	6.5	0.29	22	26–117	This study
CFS	Global	343	12.8	–	–	–	12-15	Liu et al.14
	Mediterranean croplands	13	16.8	–	–	10.6	–	Aguilera et al.32
	the Indo–Gangetic Plains	19	17.0	1.2–3.7		12.8	–	Powlson et al.33
	Sub–Sharan Africa	21	34.2	1.0–3.7		5.7	–	Powlson et al.33
	China	105	–	11.0	0.30	37	34–40	Tian et al.31
	China	159	10.0–17.0	–	–	–	20–40	Zhao et al.30
	Yangtze Delta Plain, China	52	–	–	0.20	–	20	Rui and Zhang28
	Global	620	19.4	3.8	0.36	10.2	28–73	This study
CF	South China	85	–	–	0.15	–	46	Zhu et al.29
	China	163	–	4.3	0.14	31	28–34	Tian et al.31
	Global	262	15.5	3.3	0.12	27	19–69	This study
UCF	South China	44	–	1.3	0.08	17	23–28	Zhu et al.29
	China	113	–	2.4	0.10	24	20–28	Tian et al.31
	Global	340	3.5	–	–	–	–	Lu et al.27
	Global	207	10.0	1.3	0.07	18	18–58	This study

UCF, CF, CFS and CFM represent the unbalanced application of chemical fertilizers, balanced application of chemical fertilizers, straw return and application of chemical fertilizers, and application of manure and chemical fertilizers. “–” denotes not available.