Surface soil samples(0~20 cm) of several urban parks were collected at central district in Guangzhou city

and soil pH

organic matter

clay

N

P

K content

urease

sucrase and phophatase activities were studied.The results indicated that the soil pH value was dominated by acid(pH4.5~5.5) and neutrality(pH6.5~7.5)

and had increase tendency as compared with natural soils;soil organic matter was dominated by medium level;soil total N and alkali-hydrolyzable N were medium to low level;soil total P

available P

total K and available K were medium or over medium level.The average values of soil urease

sucrase and phophatase activities were 0.36 mg NH_3-N/g

12.29 mg glucose/g and 2.14 mg phenol/g respectively.The soil fertility properties and enzyme activities had significant difference among urban parks.There existed marked correlation among soil urease

sucrase and phophatase activities(p<0.01).Soil urease

sucrase

phophatase activities and soil fertility properties such as soil organic matter etc.had significant correlation

and their activities can be taken as one of index for assessing soil fertility of Guangzhou urban parks.