天津城市绿地景观格局分析

Analysis on Landscape Pattern of Urban Green Space in Tianjin City

根据2008年8月IKONOS卫星影像数据,利用GIS技术和景观格局分析软件FRAGSTATS,分别从斑块组成、类型水平与景观水平分析了天津城市绿地景观格局。结果表明,天津斑块数目主要以小型斑块为主,面积上以大型斑块为主,绿地斑块分布不均衡,结构不合理,建议调整城市绿地空间结构,降低景观破碎度,加强大中型绿地斑块的建设,提高绿地生态功能。

Based on IKONOS satellite image in August of 2008,and by using GIS technique and spatial pattern analysis software FRAGSTATS,the paper analyzed landscape pattern of urban green space in Tianjin City from the aspects of patch composition and level of category and landscape.The result showed that there were many min-sized patches in Tianjin City while large patches occupied a large proportion of the total area of green space.Green spaces were unbalanced in distribution and unreasonable in structure.It suggested adjusting the structure of urban green space,reducing the degree of landscape fragmentation,strengthening the construction of large and mid-sized green patches,so as to improve ecological function of green space.