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The effects of different afforestation methods on the soil quality of the woodland was discussed. This paper took several afforestation lands reformed by four Miyawaki Methods and one traditional method respectively and an untransformed woodland in Nanhai District, Foshan City, China as the research objects, and conducted the comparative analysis on the soil physical, chemical characteristics and biological characteristics of different woodlands. The results showed that the average coverage of understory shrub layer and herbaceous layer of each type of reformed woodland from large to small was GX3> GX2>CT>GX1>GX4>CK. The change of the biomass of herbaceous layer was consistent with the total biomass, and the order from large to small both was GX2>GX3>GX1>CT>GX4>CK. There was no significant difference in the effects of different afforestation methods on soil physical properties. The Miyawaki Method 2 afforestation land had the highest soil organic matter content. The Miyawaki Method 3 afforestation land had the highest soil total nitrogen, available nitrogen and available potassium content, the number of the bacteria, fungus and actinomycetes and soil enzyme activities. The traditional method afforestation land had the highest soil total phosphorus and available phosphorus content. The analysis results of principal component showed that the comprehensive index of soil quality in different afforestation methods was: GX3>GX1>GX2>CT>GX4>CK, which indicated that the transformation could improve the soil quality effectively, and the transformation efficiency in the Miyawaki Method 3 was the best. So the transformation efficiency should be mainly considered in the transformation practice.

EFFECTS OF DIFFERENT FOREST RECONSTRUCTION METHODS ON CHARACTERISTICS OF UNDERSTORY VEGETATION AND SOIL QUALITY