Table 1 Information on the eight forests across three climatic zones in China and associated soil properties
Dinghu Mountains (Subtropical climate) | Baotianman (Warm temperate climate) | Changbai Mountains (Cool temperate climate) | ||||||
|---|---|---|---|---|---|---|---|---|
Broadleaf | Mixed | Conifer | Broadleaf | Mixed | Broadleaf | Mixed | Conifer | |
Latitude | 23°10′06′′–23°10′16′′N | 23°09′21′′–23°11′30′′N | 23°07′15′′–23°08′33′′N | 33°29′38′′–33°30′58′′N | 33°29′30′′–33°31′02′′N | 42°23′54′′–42°24′33′′N | 42°23′24′′–42°24′33′′N | 42°11′16′′–42°11′28′′N |
Longitude | 112°32′10′′–112°32′36′′E | 112°30′39′′–112°33′41′′E | 112°29′44′′-112°31′37′′E | 111°55′58′′–111°56′12′′E | 111°55′51′′–111°56′12′′E | 128°05′58′′–128°06′37′′E | 128°05′11′′–128°06′05′′E | 128°10′03′′–128°10′28′′E |
Altitude (m) | 250–350 | 50–250 | 50–150 | 1380–1400 | 1330–1360 | 729–781 | 734–774 | 1076–1111 |
MAT (°C) | 20.7 | 20.9 | 20.9 | 15.1 | 15.1 | 3.6] | 3.3 | −0.5 |
MAP (mm) | 1996 | 1990 | 1990 | 855 | 855 | 689 | 689 | 854 |
Age (yr) | 400 | 85 | 85 | 80 | 60 | 45 | 200 | 160 |
pH | 4.2 | 3.8 | 4.0 | 4.6 | 4.6 | 5.5 | 5.3 | 4.6 |
SOC (g∙kg−1) | 56.2 | 62.1 | 54.9 | 59.5 | 70.1 | 90.35 | 104.2 | 73.0 |
STN (g∙kg−1) | 1.9 | 1.0 | 0.9 | 1.7 | 2.6 | 6.5 | 8.5 | 3.8 |
MR (μg·kg−1·h−1) | 0.705 | 0.565 | 0.485 | 0.476 | 0.373 | 0.354 | 0.347 | 0.242 |
Litterfall (t∙ha∙yr.−1) | 3.50 | 7.69 | 9.83 | 4.56 | 5.13 | 6.02 | 6.43 | 5.51 |
Fine root (t∙ha−1) | 65.9 | 53.5 | 50.0 | 31.4 | 24.2 | 28.8 | 66.0 | 42.5 |
Sand (%) | 27.6 | 28.7 | 44.7 | 24.0 | 6.0 | 7.4 | 6.1 | 45.1 |
Siltcoarse (%) | 47.2 | 52.1 | 35.9 | 59.4 | 79.9 | 81.9 | 64.8 | 39.9 |
Siltfine (%) | 11.4 | 14.4 | 10.9 | 3.5 | 3.2 | 4.3 | 15.3 | 3.6 |
Clay (%) | 13.7 | 4.8 | 8.4 | 13.0 | 10.9 | 6.4 | 13.9 | 11. 4 |
Fe (mg∙kg−1) | 120.7 | 142.4 | 61.7 | 67.3 | 47.7 | 23.3 | 22.8 | 83.6 |
Soil type | Ferralic cambisols | Dystric cambisols | Eutric cambisols | |||||
References | Wen et al. 1998; Yan et al. 2001; Mo et al. 2004; Zhou et al. 2005; Zhang et al. 2013 | Wang et al. 2004; Liu et al. 2009; Yang et al. 2010; Zheng et al. 2011; Hu et al. 2014 | ||||||