摘要
利用2006年沈阳市Quick Bird遥感影像城市森林解译数据,借助地理信息系统,以沈阳市三环以内区域城市森林景观斑块为研究对象,基于生境可利用性和动植物的扩散能力,选取50、100、200、400、600、800、1000、1200 m 8个距离阈值,采用整体连通性指数、可能连通性指数和景观中各斑块的重要性对研究区城市森林景观连接度的距离阈值进行了分析和筛选.结果表明:2006年沈阳城市森林景观连接度的适宜距离阈值范围在100～400 m,以200 m尤为适宜.距离阈值的选择可因城市森林景观连通性的可执行性和不同层次需求而适当增大或减小.
By using the QuickBird remote sensing image interpretation data of urban forests in Shenyang City in 2006,and with the help of geographical information system,this paper analyzed the landscape patches of the urban forests in the area inside the third ring-road of Shenyang.Based on the habitat availability and the dispersal potential of animal and plant species,8 distance thresholds（50,100,200,400,600,800,1000,and 1200 m） were selected to compute the integral index of connectivity,probability of connectivity,and important value of the landscape patches,and the computed values were used for analyzing and screening the distance thresholds of urban forest landscape connectivity in the City.The results showed that the appropriate distance thresholds of the urban forest landscape connectivity in Shenyang City in 2006 ranged from 100 to 400 m,with 200 m being most appropriate.It was suggested that the distance thresholds should be increased or de-creased according to the performability of urban forest landscape connectivity and the different demands for landscape levels.
出处
《应用生态学报》
CAS
CSCD
北大核心
2010年第10期2508-2516,共9页
Chinese Journal of Applied Ecology
基金
国家自然科学基金项目(30940013)
辽宁省自然科学基金项目(20092065)
辽宁省教育厅科研计划项目(L2010502)资助
关键词
城市森林
景观连接度
距离阈值
整体连通性指数
可能连通性指数
urban forest
landscape connectivity
distance threshold
integral index index of connectivity
probability index of connectivity
