The Use Of GIS In Urban Forestry Ecology And Urban Livability Related Research

As a primary producer of urban ecosystems, urban forestry associated with human settlements closely and play an important role for the improvement of urban environmental quality, ensure sustainable development of urban systems. This study based on domestic and foreign researches of urban forestry, established a database of urban forestry resources of Dadukou District with GIS technology. According to the Urban Forestry Building objectives, and requirements of Dadukou District, Combined with livable urban environment integrated effective evaluation system, analysis of the correlation of urban forestry purification of air pollutants,carbon storage and carbon sequestrationin,reduce stormwater runoff and urban environment livabledegree. Study, the following results:1.Based on the field and within investigation, entry and storageusing Dadukou District urban forestry data use GIS software, then relating the database and property table use ArcView software, established the database of urban forestry of Dadukou District.2.Using CITY-greens model analyse the urban forestry purification of air pollutants, carbon storage and carbon sequestrationin, reduce stormwater runoff of Dadukou District in 2007-2009.Obtained by comparison:in this 3 years of Dadukou District, urban forestry purification of air pollutants equivalent to a total economic value 17,1746 million yuan and the economic value in 2009'>2008'>2007';carbon storage and carbon sequestrationin equivalent to a total economic value 1.0988 million yuan and the economic value in 2009'>2008'>2007';reduce stormwater runoff equivalent to a total economic value 0.1068 million yuan and the economic value in 2009'>2008'>2007'.3.Using CITY-greens model analyse the urban forestry purification of air pollutants, carbon storage and carbon sequestrationin, reduce stormwater runoff of Dadukou District various functional areas in 2007-2009.Obtained by comparison:in this 3 years of Dadukou District five functional areas, benefit of purification of air pollutants agroforestryry>built up area>water system>road>industrial and mining area and the same trend has shown in the carbon storage and carbon sequestrationin, reduce stormwater runoff.4.According as《Livable city scientific evaluation index system》, using principal component analysis methode and GIS Three-dimensional overlay methode, comprehensive analysis the relativity of Dadukou District on environment livable degree and urban forestry ecological benefit, shown that environment livable degree score is showed significant positive correlation with clean air benefits of urban forestry, and clean air benefits of urban forestry have direct connections with urban forestry coverage rate and species of trees in the forestry. So environment livable degree is also related to urban forestry coverage rate. Urban forestry carbon storage and carbon sequestrationin no significant effect on the temperature, so it has little effect to environment livable degree.