Human Activities Increase the Nitrogen in Surface Water on the Eastern Loess Plateau

Table 1

Descriptive statistics of the nitrogen concentrations in Yellow River and Fen River Basins.

Basin	Nitrogen (mg/L)
	NH3-N				TN
	Minimum	Maximum	Mean	SD	Minimum	Maximum	Mean	SD
Yellow River	0.11	13.20	1.82	2.55	2.09	22.30	10.42	4.83
Fen River	0.10	34.10	4.28	5.91	1.47	70.50	17.48	14.75