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Table 3

Correlation analysis between heavy metals and physical–chemical properties of sediments during disturbance experiments

Metals	Disturbance experimental scenario	pH	Eh	DO	Conductivity	TOC
Cu	Downstream sediments in moving water	−0.684	0.912	−0.093	0.300	−0.932
	Downstream sediments in standing water	0.868	−0.172	0.771	−0.944	−0.771
	Upstream sediments in moving water	0.067	0.550	−0.422	0.055	0.991**
	Upstream sediments in standing water	−0.286	0.941	−0.946	−0.617	−0.348
Fe	Downstream sediments in moving water	−0.803	0.96*	0.218	0.460	−0.733
	Downstream sediments in standing water	−0.280	0.508	−0.204	0.175	0.012
	Upstream sediments in moving water	0.041	−0.396	0.528	0.008	−0.482
	Upstream sediments in standing water	−0.694	−0.964*	0.229	0.435	0.942
Zn	Downstream sediments in moving water	−0.814	0.996**	0.449	0.523	−0.582
	Downstream sediments in standing water	0.993**	0.383	0.993**	−0.735	−0.388
	Upstream sediments in moving water	0.723	−0.923	−0.988*	0.737	0.479
	Upstream sediments in standing water	0.011	0.433	−0.571	−0.975*	−0.560
Ni	Downstream sediments in moving water	−0.905	0.553	0.452	0.708	−0.499
	Downstream sediments in standing water	0.975*	0.524	0.999**	−0.682	−0.330
	Upstream sediments in moving water	0.432	0.153	−0.862	0.447	0.719
	Upstream sediments in standing water	0.251	0.562	−0.441	−0.974*	−0.740
Cr	Downstream sediments in moving water	−0.977*	0.917	0.302	0.867	−0.499
	Downstream sediments in standing water	0.971*	0.140	0.932	−0.798	−0.485
	Upstream sediments in moving water	0.740	−0.172	−0.926	0.740	0.616
	Upstream sediments in standing water	0.416	0.560	−0.270	−0.995*	0.818
Cd	Downstream sediments in moving water	0.982*	0.812	0.029	0.804	−0.744
	Downstream sediments in standing water	0.868	−0.172	0.771	−0.944	−0.771
	Upstream sediments in moving water	0.995**	−0.734	−0.869	0.996**	0.022
	Upstream sediments in standing water	0.363	0.487	−0.264	−0.975*	−0.766
Mn	Downstream sediments in moving water	−0.891	0.934	−0.129	0.626	−0.899
	Downstream sediments in standing water	0.992**	0.283	0.975*	−0.770	−0.436
	Upstream sediments in moving water	0.667	−0.094	−0.949	0.674	0.628
	Upstream sediments in standing water	0.420	0.557	−0.262	−0.954*	−0.818
Pb	Downstream sediments in moving water	−0.926	0.989*	0.307	0.688	−0.644
	Downstream sediments in standing water	0.973*	0.533	0.998**	−0.673	−0.318
	Upstream sediments in moving water	0.502	0.015	−0.910	0.523	0.564
	Upstream sediments in standing water	0.055	0.339	−0.450	−0.995**	−0.550

Metals	Disturbance experimental scenario	pH	Eh	DO	Conductivity	TOC
Cu	Downstream sediments in moving water	−0.684	0.912	−0.093	0.300	−0.932
	Downstream sediments in standing water	0.868	−0.172	0.771	−0.944	−0.771
	Upstream sediments in moving water	0.067	0.550	−0.422	0.055	0.991**
	Upstream sediments in standing water	−0.286	0.941	−0.946	−0.617	−0.348
Fe	Downstream sediments in moving water	−0.803	0.96*	0.218	0.460	−0.733
	Downstream sediments in standing water	−0.280	0.508	−0.204	0.175	0.012
	Upstream sediments in moving water	0.041	−0.396	0.528	0.008	−0.482
	Upstream sediments in standing water	−0.694	−0.964*	0.229	0.435	0.942
Zn	Downstream sediments in moving water	−0.814	0.996**	0.449	0.523	−0.582
	Downstream sediments in standing water	0.993**	0.383	0.993**	−0.735	−0.388
	Upstream sediments in moving water	0.723	−0.923	−0.988*	0.737	0.479
	Upstream sediments in standing water	0.011	0.433	−0.571	−0.975*	−0.560
Ni	Downstream sediments in moving water	−0.905	0.553	0.452	0.708	−0.499
	Downstream sediments in standing water	0.975*	0.524	0.999**	−0.682	−0.330
	Upstream sediments in moving water	0.432	0.153	−0.862	0.447	0.719
	Upstream sediments in standing water	0.251	0.562	−0.441	−0.974*	−0.740
Cr	Downstream sediments in moving water	−0.977*	0.917	0.302	0.867	−0.499
	Downstream sediments in standing water	0.971*	0.140	0.932	−0.798	−0.485
	Upstream sediments in moving water	0.740	−0.172	−0.926	0.740	0.616
	Upstream sediments in standing water	0.416	0.560	−0.270	−0.995*	0.818
Cd	Downstream sediments in moving water	0.982*	0.812	0.029	0.804	−0.744
	Downstream sediments in standing water	0.868	−0.172	0.771	−0.944	−0.771
	Upstream sediments in moving water	0.995**	−0.734	−0.869	0.996**	0.022
	Upstream sediments in standing water	0.363	0.487	−0.264	−0.975*	−0.766
Mn	Downstream sediments in moving water	−0.891	0.934	−0.129	0.626	−0.899
	Downstream sediments in standing water	0.992**	0.283	0.975*	−0.770	−0.436
	Upstream sediments in moving water	0.667	−0.094	−0.949	0.674	0.628
	Upstream sediments in standing water	0.420	0.557	−0.262	−0.954*	−0.818
Pb	Downstream sediments in moving water	−0.926	0.989*	0.307	0.688	−0.644
	Downstream sediments in standing water	0.973*	0.533	0.998**	−0.673	−0.318
	Upstream sediments in moving water	0.502	0.015	−0.910	0.523	0.564
	Upstream sediments in standing water	0.055	0.339	−0.450	−0.995**	−0.550

*Correlation significant at 0.05 level (both sides).

**Correlation significant at 0.01 level (both sides).

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