Fig. 7

Variations of soil chemical properties (organic matter (a), total nitrogen (b), total phosphorus (c), total potassium (d), available nitrogen (e), available phosphorus (f), available potassium (g), and pH value (h)) in various forest types.

Variations of soil chemical properties (organic matter (a), total nitrogen (b), total phosphorus (c), total potassium (d), available nitrogen (e), available phosphorus (f), available potassium (g), and pH value (h)) in various forest types.