Supplementary Table S5:Key soil characteristics obtained for plotscomprised of 5, 3, 1 or 0 tree species.Data for 5sp and 3sp relate to samples taken from plots A3 and T4, respectively. Data for 0sp relate to samples taken from plots Ca1 and Ca2. Data for 1sp relate to samples taken from all monoculture plots. The average taxa diversity of monoculture plots planted with different tree species (Ae, Cm, Hc, Ls and Tr) is also shown.

%C / %N / C:N / NH4+ / NO3- / pH / %clay* / %silt* / %sand*
5sp / 3.14  0.13ab / 0.29  0.01a / 10.7 0.1b / - / - / 5.89  0.03bc / 350.9ab / 390.5a / 251.2bc
3sp / 2.69  0.19b / 0.28  0.02a / 9.8  0.2bcd / 433  27a / 66  5.1 a / 5.61  0.09cd / 401.4a / 400.8a / 201.4c
1sp / 3.26 0.11ab / 0.31  0.01a / 10.6  0.2bc / 451  39a / 69  3.9a / 5.87  0.04bc / 31 1.0cd / 41 0.6a / 28 0.9ab
0sp / 2.95 0.35ab / 0.31  0.04a / 9.5  0.1cd / - / - / 5.84  0.05abcd / 33  2.3abcd / 39  1.1a / 28  2.4ab
Ae / 3.88 0.39a / 0.33  0.03a / 11.9  0.3a / 497  59a / 59  3.5a / 6.02  0.08ab / 263.1d / 411.7a / 331.7a
Co / 2.82  0.16b / 0.27  0.01a / 10.5  0.2bc / 380  39a / 57  4.6a / 5.58  0.07d / 361.4abc / 401.1a / 252.4abc
Hc / 2.94 0.13ab / 0.28  0.01a / 10.7 0.3b / 348  58a / 63  5.7a / 6.15 0.08a / 301.4bcd / 410.6a / 301.6ab
Ls / 3.57  0.15ab / 0.34  0.02a / 10.7 0.4bc / 606  148a / 91  13.2a / 5.72 0.06cd / 31 2.3abcd / 41 1.2a / 272.3abc
Tr / 3.09 0.18ab / 0.33  0.02a / 9.4  0.1d / 426  68a / 73  6.0a / 5.89 0.08abc / 31 1.2abcd / 41 1.5a / 270.9abc
*Clay, sand and silt are particles size ranges of < 0.002 mm, 0.002 mm to 0.05 mm and 0.05 mm to 2 mm, respectively.
In each column, data in rows not linked by the same letter (a,b,c or d in superscript) are significantly different (Tukey-Kramer honesty significant difference; P = 0.05).