Enhanced soil aggregate stability limits colloidal phosphorus loss potentials in agricultural systems

Environmental Sciences Europe

Table 1 Basic chemical and physical properties of soil, and characterization of sites located in Zhejiang Province, China

Soils	S1	S2	S3	S4	S5	S6	S7	S8	S9	S10	S11	S12	S13	S14	S15
pH	3.9	4.5	5.1	5.2	5.3	5.5	5.9	6.2	6.4	6.6	7.0	7.1	7.3	7.4	7.8
TC (g kg⁻¹)	8.4	3.3	13.1	11.1	14.8	4.5	10.8	10.3	7.7	17.5	13.5	5.2	20.2	9.0	14.1
TN (g kg⁻¹)	1.5	0.5	1.5	1.4	1.7	0.6	1.4	1.3	0.9	2.0	1.4	0.7	2.2	0.9	1.7
TP (g kg⁻¹)	1.3	0.2	0.5	0.8	1.1	0.3	0.8	0.7	1.6	0.6	0.5	0.3	1.1	0.9	1.0
CEC (cmol kg⁻¹)	118.2	123.1	94.7	127.1	104.2	110.0	116.7	71.4	91.6	116.8	126.4	164.8	23.5	31.7	29.7
Sand (%)	12.4	45.5	71.8	56.9	16.4	70.6	18.9	69.4	78.5	32.4	21.4	70.7	46.0	16.6	9.8
Silt (%)	82.1	18.1	14.9	28.8	42.8	7.5	42.3	18.4	10.7	44.8	40.6	13.6	25.7	44.7	82.6
Clay (%)	5.5	36.4	13.3	14.3	40.9	21.9	38.8	12.2	10.8	22.8	38.0	15.8	28.3	38.7	7.7

Land use and vegetation	Orchard	Orchard	Single-cropping rice	Vegetable	Double-cropping rice	Orchard	Vegetable	Vegetable	Rice–rape rotation	Single-cropping rice	Single-cropping rice	Single-cropping rice	Single-cropping rice	Rice–wheat rotation	Rice–rape rotation
Mean annual temperature (°C)	16.4	17.0	16.5	16.3	18.0	17.7	17.0	17.8	16.5	16.0	15.8	16.8	16.4	14.0	16.9
Annual precipitation (mm)	1814.0	1657.0	895.6	1373.6	1670.1	1760.1	1489.0	1474.1	1552.0	1412.7	1200.0	1632.9	1446.8	1700.0	1486.0
Geographic coordinates (N, E)	118°16′, 29°5′	118°50′, 28°59′	119°4′, 27°58′	120°23′, 29°44′	120°22′, 27°30′	118°26′,28°54′	119°8′, 29°29′	119°46′, 28°21′	122°41′, 29°48′	122°17′, 30°2′	120°11′,30°49′	122°0′, 29°9′	120°47′, 120°47′	120°28′, 27°16′	121°30′, 28°19′

TC total carbon, TN total nitrogen, TP total phosphorus, CEC cation exchange capacity