Wet and Dry Atmospheric Depositions of Inorganic Nitrogen during Plant Growing Season in the Coastal Zone of Yellow River Delta

Table 2

Atmospheric N deposition contributes to N inputs to local soil.

Month	Topsoil		Atmospheric deposition
	NO3^−–N (mg m^−2)	NO4^+–N (mg m^−2)	% of NO3^−–N content in topsoil	% of NO4^+–N content in topsoil
May	228.78	1722.77	78.04	4.77
Jun.	706.59	976.09	34.35	13.90
Jul.	786.59	602.23	22.30	37.10
Aug.	349.47	653.89	80.18	77.47
Sep.	281.27	816.33	34.74	10.70
Oct.	234.77	641.91	32.86	11.43
Nov.	866.97	343.27	3.73	20.83
Average	493.49	822.36	31.38	20.50