Effects of Environmental Factors on Nutrients Release at Sediment-Water Interface and Assessment of Trophic Status for a Typical Shallow Lake, Northwest China

Table 3

The pearson correlation coefficients between C, N, P, and different ratios of nutrients (𝑛=15).

	TOC	OM	TN	NH4^+-N	NO3^−-N	TP	IN	C : N	N : P
TOC	1.000							0.373	0.785**
OM	0.999**	1.000						0.327	0.751**
TN	0.939**	0.931**	1.000					0.037	0.872**
NH4^+-N	0.293	0.291	0.248	1.000				0.194	0.294
NO3^−-N	−0.195	−0.189	0.021	−0.149	1.000			−0.748*	0.069
TP	0.675*	0.669*	0.633*	0.065	−0.134	1.000		0.250	0.176
IN	0.153	0.148	0.238	0.822**	0.443	−0.018	1.000	−0.254	0.306

TOC: total organic carbon; OM: organic matter; TN: total nitrogen; TP: total phosphorus; NH₄⁺-N: ammonia nitrogen.
NO₃⁻-N: nitrate nitrogen; TP: total phosphorus; IN: inorganic nitrogen.
*Correlation is significant at the 0.05 level (2 tailed).
**Correlation is significant at the 0.01 level (2 tailed).