Abstract: Pot experiment results of Cunninghamia lanceolata saplings on three types of repeatedly planting soils of Huitong forest area show that repeatedly planting soil is not suitable for sapling growth, the height growth is decreased by 37-40%, base diameter by 19-28 %, canopy size by 21-29, and total biomass by 45-50%. Repeatedly planting of Cunninghamia lanceolata also induces the decrease of soil fertility: humus content by 17-28%, available nutrients by 23-28%, and the number of soil microbes and their activity are declined significantly. It is suggested that the management system of repeatedly planting pure Cunninghamia lanceolata stand should be abandoned.

Key words: Cunninghamia lanceolata, Soil, Sapling growth