A Study Of City Park Ecological Service Function Value Assessment System

Urban green space as an important component of urban ecological system, the optimization of the urban environment quality plays an important role, especially in city parks, its environmental quality is depended on the green ecological service function. The study on the basis of field investigation and literature research, the urban park ecological service function, assessment method and evaluation system are studied, and in accordance with the system of building, respectively, for the evaluation of ecosystem service function two park in Chengdu. The results of the study are as follows:(1) combined with literature review method, questionnaire method, frequency analysis method to build the city park ecosystem service function evaluation system. Evaluation indexes were water conservation, carbon sequestration, transpiration heat absorption, absorption of sulfur dioxide and release oxygen air dust, reduce noise, negative ions, landscape recreation and social benefits.(2) on the basis of field investigation and literature based research database, in view of the southern city of garden tree species of common leaf area index, carbon, oxygen release, dust absorption, transpiration, Sulphur dioxide has carried on the summary.(3) through the field investigation combined with evaluation system, respectively on the Guanghua park and New Guihu park ecosystem service function evaluation. Guanghua park ecological service function value is 107591492.25 Yuan, ecological service function value of 26040105 Yuan, landscape recreation function value is 43726059.58 Yuan, the social benefit function value is 37825327.71 Yuan. New Guihu park ecological service function value is 64495779.40 Yuan, ecological service function value of 21154759 Yuan, landscape recreation function is 39635013.83 Yuan, social service function value of 37060061.5 Yuan.