Spatial Variations in Concentration, Compositions of Glomalin Related Soil Protein in Poplar Plantations in Northeastern China, and Possible Relations with Soil Physicochemical Properties

Table 4

Differences of absorption peak area of functional traits of T-GRSP at different sites in Songnen Plain.

Site	The absorption peak area of functional traits of different wave numbers
	3750−3000 cm^−1	3000−2820 cm^−1	1750−1480 cm^−1	1480−1320 cm^−1	1320−1200 cm^−1	1200−930 cm^−1	930−840 cm^−1
Dumeng	7293.0 (634.2)	331.3 (115.8)	1949.7 (185.1)	520.7 (92.9)	102.3 (34.5)	1150.0 (154.1)	26.7 (9.6)
Fuyu	8052.3 (727.2)	291.3 (99.0)	2019.3 (56.9)	444.0 (29.8)	113.0 (42.5)	1187.7 (47.9)	17.3 (1.2)
Lanling	8559.0 (1235.2)	176.3 (24.1)	2045.7 (354.9)	483.3 (67.7)	59.0 (12.5)	1437.0 (240.9)	24.0 (7.5)
Mingshui	8489.3 (379.2)	185.3 (10.1)	2083.0 (137.5)	536.7 (89.8)	65.7 (21.1)	1508.3 (103.8)	31.3 (11.2)
Zhaodong	8203.7 (939.4)	301.3 (85.5)	2181.7 (165.3)	567.3 (58.5)	114.0 (25.5)	1205.3 (135.7)	18.3 (1.5)
Zhaozhou	7708.0 (623.5)	267.3 (46.3)	1960.0 (162.8)	453.3 (62.9)	116.7 (26.1)	1175.7 (134.4)	36.3 (11.0)
Largest/lowest ratio	1.17	1.88	1.12	1.28	1.98	1.31	2.10
Mean of pooled data	8050.9 (813.1)	258.8 (86.7)	2039.9 (185.2)	500.9 (74.7)	95.1 (34.3)	1277.3 (190.8)	25.7 (9.8)