Abstract:

In order to comprehensively understand the urban forest service functions and objectively evaluate the service function value, the 14 kinds of service function of urban forest ecosystem in Guangzhou were evaluated by applying the evaluation technologies of actual, substituted (concealed) and imaginary (simulated) markets on the basis of lots of survey data. The results showed that service functions of urban forest ecosystem in Guangzhou evaluated 4417157×104 yuan/a in 2009. The indirect economic value (4209833×104 yuan/a) was 35.16 times as high as the direct economic value (122155×104 yuan/a). The value of service functions of urban forest ecosystem included economic profit, ecological benefit and social benefit. The economic profit (122155×104. yuan/a), the ecological benefit (3546983×104 yuan/a), social benefit (748019×104 yuan/a) accounted for 2.77%, 80.30% and 16.93% of the gross service value, respectively. The value of each kind of service functions tended to decrease in the order: climatic regulation＞oxygen release＞forest recreation＞culture and education＞forest byproducts＞employment＞carbon dioxide fixation＞nutrient accumulation＞soil improvement＞biological diversity protection＞water conservation＞soil conservation＞air purification＞scientific and technological progress. The value of climatic regulation, oxygen release and forest recreation was very important in all kinds of value of service functions of urban forest ecosystem.