Spectroscopic Characteristics of Dissolved Organic Matter in Afforestation Forest Soil of Miyun District, Beijing

Table 6

Results of the ¹H NMR analyses.

Sample sites	% aliphatics (0.5–3.00 ppm)	% carbohydrates (3.00–4.2 ppm)	% aromatics (6.00–8.00 ppm)
Y-1	4.2	92.2	3.6
Y-4	61.8	33.5	4.7
Y-10	64.5	33.5	2
Y-15	36.7	59.8	3.5
Y-20	34	64.2	1.8