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| Site | Soil moisture (%) | pH (1:2.5) | Organic matter (g kg-1) | N/NH4+ (mg kg-1) | N/NO3- (mg kg-1) | Available K (mg kg-1) | Available P (mg kg-1) | Bulk density (g·cm-3) |
|---|---|---|---|---|---|---|---|---|
| Tongzhou, 2012 | 18.50 | 7.07 | 33.0 | 37.2 | 233.7 | 815.3 | 318.6 | 0.95 |
| Shunyi, 2013–2014 | 22.23 | 6.85 | 37.7 | 2.9 | 69.4 | 1170.6 | 532.3 | 0.86 |
