Urban-induced changes in tree leaf litter accelerate decomposition

Ecological Processes

Table 2 Chemical properties of leaf litter pools

Species	*Acer*		*Alnus*		*Populus*		*Quercus*		*Robinia*
Origin	Periurban	Urban	Periurban	Urban	Periurban	Urban	Periurban	Urban	Periurban	Urban
NDF [%]	50.03	59.44	37.33	36.58	37.19	33.51	58.57	55.79	26.76	25.43
ADF [%]	19.09	22.75	20.50	19.60	23.52	20.52	29.63	28.56	16.48	16.85
ADL [%]	8.27	9.97	10.64	10.23	9.17	8.29	15.84	15.10	9.22	8.99
N [%]	0.98	0.94	2.49	2.42	1.07	0.91	0.77	0.90	2.07	1.90
C [%]	44.69	44.58	48.52	47.40	45.87	45.25	49.26	48.67	46.78	44.42
P [g kg⁻¹]	1.39	0.54	0.53	0.92	0.95	1.23	2.28	2.22	0.75	0.91
S [g kg⁻¹]	1.57	1.54	0.98	2.11	1.75	2.96	0.75	0.95	1.64	1.56
K [g kg⁻¹]	7.61	9.58	3.81	6.66	7.51	7.36	5.16	4.00	7.48	6.98
C:N	45.68	47.32	19.45	19.62	43.05	49.70	63.88	53.86	22.60	23.39
C:P	322.07	819.58	910.18	515.11	484.83	368.17	215.74	219.64	623.43	487.71
ADL:N	8.45	10.59	4.26	4.23	8.61	9.10	20.54	16.71	4.46	4.73
Al [mg kg⁻¹]	699.69	1,257.62	727.50	1,593.08	2,363.85	1,693.85	722.38	929.77	1,168.62	2,773.85
B [mg kg⁻¹]	140.40	165.75	46.58	119.75	176.30	207.30	76.52	77.56	103.10	138.45
Ca [g kg⁻¹]	31.12	31.28	10.18	24.01	29.10	37.61	18.32	20.13	35.57	46.62
Cr [mg kg⁻¹]	1.63	1.16	0.81	1.10	1.62	1.68	3.91	2.94	0.77	2.23
Cu [mg kg⁻¹]	12.25	16.35	10.50	24.34	16.25	28.87	9.64	12.50	17.22	20.16
Fe [mg kg⁻¹]	227.45	392.55	181.80	433.70	517.95	580.65	168.25	266.65	331.95	712.55
Mg [g kg⁻¹]	1.90	1.96	0.87	2.14	1.49	1.42	0.95	1.08	1.32	2.11
Mn [mg kg⁻¹]	230.80	488.55	321.78	248.00	310.80	132.75	512.60	596.30	84.79	69.91
Na [mg kg⁻¹]	253.70	326.10	294.25	789.90	355.05	307.90	383.10	410.15	374.70	465.75
Zn [mg kg⁻¹]	186.70	139.30	73.83	190.25	738.85	1,070.00	86.18	163.00	74.14	74.54

All values on a per litter oven-dry weight basis, except for NDF neutral detergent fiber, ADF acid detergent fiber, and ADL acid detergent lignin which are on an air-dry weight basis (n = 1).