. 2016 Aug 5;6:30350. doi: 10.1038/srep30350

Table 1. The proportional contribution (%) of individual and total edaphic factor, climate, and C input on variance of CSE based on VPA method in long-term fertilization experiments at six typical croplands in China.

Category	Indictors	Overall	Treatments			Sites
Category	Indictors	Overall	CK	NPK	NPKM	HH	GZL	HS	ZZ	YL	QY
Edaphic factor	TN	1.4^**	0.0	0.5	0.0	0.4	0.9	1.6	0.1	0.2	0.1
	AN	7.9^**	4.7^**	10.2^**	1.1	7.0^**	3.4	3.5	2.4	0.2	1.3
	TP	3.0^**	3.0^*	4.8^**	0.0	2.1	2.6	1.7	2.7^*	0.0	0.0
	AP	0.4	0.5	0.6	0.0	0.1	0.4	0.8	2.1	0.8	0.0
	TK	0.6	1.2	0.0	0.4	4.6^**	0.4	0.0	13.4^**	0.8	0.1
	AK	0.1	0.0	0.0	0.2	0.1	0.0	2.8	0.1	1.4	1.6
	pH	0.0	1.2	0.0	1.3	1.3	0.0	0.0	0.5	5.6^*	6.2^*
	BD	0.3	0.0	1.3	0.2	2.6^*	17.5^**	0.6	1.7	2.6	1.2
	Total^a	11.7^**	25.2^**	19.4^**	8.9	20.5^**	29.9^**	10.6	39.7^**	13.2	15.0
C input	SC	0.1	0.0	0.2	0.7	0.9	0.7	4.6	0.4	6.8^*	0.7
	MC	0.0	–	–	0.0	0.1	4.9^*	–	0.0	0.5	4.3
	TC	0.1	0.4	0.7	0.0	0.0	0.5	5.8	0.6	2.0	0.7
	Total^a	0.3	0.4	0.7	1.0	0.9	7.9	7.8	0.9	7.1	5.8
Climate	MAP	0.2	0.0	0.0	0.0	0.9	0.2	0.7	0.4	2.6	2.0
Climate	MAT	0.1	0.4	1.0	0.8	1.2	2.3	0.9	0.3	0.2	0.9
	Total^a	0.2	0.5	1.4	0.8	1.9	2.4	1.3	0.5	3.1	2.4
Total ^b	–	22.6^**	49.1^**	40.5^**	28.9^**	41.2^**	37.2^*	15.9	62.6^**	36.5^**	24.1

Abbreviations: SC: stubble carbon input; MC: manure C input; TC: total OC input as the sum of SC plus MC. Other abbreviations were presented in Table 2. *P < 0.05, ^**P < 0.01.

^aRepresents total variance explained by single or interactive edaphic factor; ^brepresents total variance explained by single or interactive edaphic, C input and climate factor.