Table 2.

Nr accumulation (or balance) in different subsystems of China in 1978 and 2010 (Tg N/y)

Subsystem	Range*
	1978			2010
	Median	Minimum (5th)	Maximum (95th)	Median	Minimum (5th)	Maximum (95th)
Land subsystem	17	12	22	45	33	57
Plants and products	6.7	5.3	8.0	22	19	26
Solid waste storage	2.1	1.5	2.8	5.8	4.1	7.6
Storage in soils and others†	7.9	4.8	11	17	11	24
Atmosphere subsystem‡	7.6	6.4	8.9	20	16	24
Atmosphere subsystem (deduct deposition)§	1.3	−0.1	2.7	−1.6	−6.4	3.1
Inland water subsystem	2.7	2.0	3.4	9.6	8.4	11
Coastal regions	4.5	4.0	5.0	7.7	7.1	8.3
Total	25	18	33	61	43	79

*Reports the overall uncertainty as the 90th percentile of the resulting probability distribution (the 5th and 95th percentiles and the median).

^†Including Nr stored in soils, natural vegetation that is not harvested, and plant residues.

^‡Total Nr input to the atmosphere.

^§The net input to the atmosphere (i.e., input to the atmosphere minus deposition back to the land and water surface).