重庆奥林匹克花园山地规划区生态敏感性分析

Analysis of ecological sensitivity of planning mountainous zone of Chongqing Olympic Garden

调查分析了重庆市奥林匹克花园山地公园规划区内的高程、坡度、土壤特点和植被组成现状。通过层次分析法(AHP)选择规划区内对生态环境和景观特点有显著影响的两个生态因子———坡度和植被覆盖度,应用GIS和因子叠加法技术进行了生态敏感性分析,划分出极敏感区、敏感区、弱敏感区和非敏感区。分析表明:极敏感和敏感区面积占研究区的21.1%,大部分为陡崖及裸地;弱敏感区占22.9%;非敏感区占56%,植被覆盖率高,坡度小。

The altitude, gradient, soil characteristics and current situation of vegetation composition of planning mountainous zone in Chongqing Olympic Garden were investigated and analyzed. Analytic Hierarchy Process method was used to select the two ecological factors such as gradient and vegetation covering rate which obviously affect ecological environment and scenic spots in this planning zone. GIS and factor overlay method were used to analyze ecological sensitivgity and then extreme cal sensitive zone, sensitive zone, weak sensitive zone and non -sensitive zone were classified. The analysis results indicated that the area of extreme ecological sensitive zone and sensitive zone reached 21.1 percent of the studied areas and that most of the area is stiff cliff and nude land and that the area of weak sensitive zone reached 22.9 percent and that the area of non - sensitive zone reached 56 percent and that the non - sensitive zone has high vegetation covering rate and small gradient.