基于GIS技术的校园树木生态效益分析

Ecological benefits analysis of trees in campus based on the GIS

采用样方调查的方法对安徽农业大学老校区67.5 hm2范围内的树木进行实地调查,并运用CITY-green模型对校园内的树木所产生的生态效益以价值形式进行研究和比较分析。结果表明,安徽农业大学老校区内森林覆盖率约为45%,校园内树木每年产生的生态效益折合人民币约5481487元。其中,碳存储1672.53 t,价值1920064元;每年碳吸收9.44 t,价值10837元;吸收有害气体及PM10为2033.01 kg,价值81202元;削减暴雨径流6057.25 m3,价值3274549元;节约能源389668 kW h,价值194834元。

Based on the theory and methodology of landscape ecology ,we made an investigation on the sampling plots covering 67. 5 hm^2 area of Anhui Agricultural University campus using the CITY-green model of GIS. The results were used as the input for the urban forest management information system （UFMIS） ,which was developed based on the model of CITY-green. According to the statistical results, the forest coverage was 45% and the total ecological value of forest in Anhui Agricultural University was as high as 5 481 487 RMB in terms of economy. Carbon storage was 1 672. 53 t which was value of 1 920 064 RMB. Carbon sequestration was 9. 44 t per year, which was value of 10 837 RMB. Removal for O3, SO2, CO, NO2 and PM10 was 2 033.01 kg, which was value of 81 202 RMB. Stormwater runoff reduction was 6 057. 25 m^3 ,which was value of 3 274 549 RMB. Energy conservation was 389 668 kWh,which was value of 194 834 RMB.