The Influence of Intermediate Cutting to Chemical Properties of Soil under the Fraxinus mandshurica,Juglans mandshurica and Amur corkage Hardwood Broad-leaved Mixed Forests

The determination of the chemical properties of the soil under the different management Measures of the Fraxinus mandshurica,Juglans mandshurica and Amur corkage hardwood broad-leaved mixed forests,the results shows that: The content of the total P,available N and available K of the Moderate thinning stands are higher,the total content of the soil under the update stand after cutting forests are converted to available more effective, which can promote the growth of the Fraxinus mandshurica,Juglans mandshurica and Amur corkage hardwood broad-leaved mixed forests and provide the theoretical basis for the sustainable management of the the Fraxinus mandshurica, Juglans mandshurica and Amur corkage hardwood broad-leaved mixed forests.