城市公共绿地的应急避难功能-自然灾害学报.PDF

19 4 Vo.l 19 No. 4 2010 8 JOURNAL OF NATURAL DISASTERS Aug. 2010 : 1004- 45 4( 2010) 04- 0034- 09 ) ) ) GIS 朱佩娟, 张 洁, 肖 洪, 田怀玉 ( , 410082) : , G IS, , , G IS, 2015 , , : ( 1) 2005 2 2 113. 54km , 20. 5% , 440. 46km ; 49. 59, ( 2) , , , 30, ( 3)- - , 2015 , 60% : ; ; G IS; : P315. 69 : A Em ergency refuge function of urban green space: G IS-based pattern optim ization ZHU Pei-juan, ZHANG Jie, XIAO H ong, TIAN H ua-i yu ( College ofResources and Env ironm ent Science, Hunan Norm alUniversity, Changsha 410081, China) Abs tract: In order to promote the optmi ization of emergency refuge function pattern of the public green space sys- tem, th is paper applies the function of spatial analysis of ArcGIS to dealw ith the fifth census data for Changsha, and on the basis of population density d istribution and public green space buffer zone, the population service rad ia- tion capab ility of the urban public green space w as studied. Comb ined w ith the GIS and CA, th is subject estab- lished the spatial distribution model of population and the traffic flow pred iction model for the year 2015. From the perspective of balanced development of cities and maxmi ization of disaster prevention functions of urban public green space, the reasonable service rad ius and d istribution of public green spacew ere identified. The resu lt show s: 2 ( 1) the buffer zone of public green sp