An Assessment of Human versus Climatic Impacts on Jing River Basin, Loess Plateau, China

Table 4

Changes to runoff and sediment load within the nine pairs of years with SPEC.

Character	Number	1	2	3	4	5	6	7	8	9
Pairs of years with SPEC	Year 1	1968	1975	1978	1970	1977	1965	1965	1971	1960
	Year 2	2003	1990	2011	1978	2007	1979	2005	1987	1972
Runoff (Mm^3)	Year 1	2658	2610	1700	2415	1760	1412	1412	1300	1086
	Year 2	2120	2011	1296	1700	797	1190	1019	932	847
	Difference	538	599	404	715	963	222	393	368	239
	(%)	20.24	22.95	31.17	42.06	54.72	18.66	27.83	28.31	22.01
Sediment load (Mt)	Year 1	328	256	252	419	428	56	56	159	149
	Year 2	209	215	27.8	252	68.9	162	83	92	42
	Difference	119	41	224.2	167	359.1	−106	−27	67	107
	(%)	36.28	16.02	806.47	66.27	83.9	−65.43	−48.21	42.14	71.81
Sediment concentration (kg m^−3)	Year 1	141	119	204	207	333	49.9	49.9	194	188
	Year 2	99	133	22	204	86	222	82	147	100
	Difference	42	−14	182	3	247	−172.1	−32.1	47	88
	(%)	29.79	−11.76	827.27	1.47	74.17	−77.52	−64.33	24.23	46.81

Note: is amplitude (%).