In order to understand the situations of the soil nutrients in Chanba ecologically balanced area in Xi＇an,and to provide scientific basis for the use,maintenance,and melioration of the green lands,the soil nutrients and related enzyme activities of the soils within the area were analyzed.The results indicated that the area was dominated by alkaline soil.Soil organic matter,total nitrogen and alkali-hydrolysable nitrogen were low.Total phosphorus and potassium were high.available phosphorus and available potassium were rich.The average values of green space soil sucrase,urease,phophatase and catalase activities were 3.10 mg·g^-1,0.58 mg·g^-1,1.12 mg·g^-1,and 0.82 mL·g^-1,respectively.The soil nutrient properties and enzyme activities had differences among green parks.Varying degrees of correlations existed between different soil enzymes as well as soil nutrient properties.Significant correlations were also found between the activities of soil enzymes（such as urease,sucrase,phophatase,and catalase） and soil fertility properties（such as soil organic matter）,indicating that the enzyme activity can be considered as a potential index to be used for soil fertility assessment.
Journal of Northwest Forestry University
urban green space
soil enzyme activity
Chanba area of Xi＇an