北京城市公共绿地景观格局分析

摘要

In order to understand the structures and characters of landscape pattern of the public green space in Beijing in 2005, planning areas within 8 municipal districts were selected as research objectives.Assisted by geography information system, the pattern structures of the green space were analyzed by Fragstats software by using the indices such as mean patch area, mean shape index and mean patch fractal dimension.It was found that the total area of the public green space was 6 431.26 hectare.The average fragmentation index was 1.09 in total, which indicated the characters for strong human interference to the public green space.In addition, the average neighboring value of minimum distance was 131.56 m in total,which indicated the patches were closely interrelated among each other.%为了解2005年北京市公共绿地景观格局的构成和特征,以北京城8区为研究区域,在地理信息系统的支持下,选取了平均斑块面积、平均斑块形状指数、平均斑块分维指数等,通过Fragstats软件对公共绿地进行了格局分析.结果表明:公共绿地总面积较大,达到了6 431.26 hm2;整体景观的平均斑块分维指数为1.09,反映了城市公共绿地受人为干扰强烈的特性;整体景观的平均斑块最近邻体距离为131.56 m,反映出公共绿地斑块之间联系较为紧密.