Studies On Soil Of Harbin Urban Vegetation

This paper deals with the characteristics of human -disturbed soils in Harbin city . Samples were collected from thirteen areas covering different types ofvegetation ,which was divided into four parts:park and square,public courtyard and living area,road and traffic area,nursery area. The physical and chemical properties of the soil were analyzed ,including nutrient change and routine index of acidity and alkalinity,in addition,compared them with natural soil and studied their variation and correlation .The results as follows:The soil bulk density of Harbin urban vegetation is higher,total porosity and field capacity are small. Organic materials are scant. Nutrient is very limited and the correlativity is not clear. The soil is neutral. Fertility is also lower. Aiming at solving these serious problems,we put forward improvement ways and methods,which will have profound significance in afforesting and beautifying northern cities.