基于GIS的太原市景观格局与可达性分析

A GIS-Based Analysis of Landscape Pattern and Accessibility of Taiyuan City

城市公园绿地是城市绿地系统中重要的组成部分,是衡量一个城市人居环境和城市环境的重要标准.本研究以太原市中心城区(环城高速内)为研究对象,运用遥感技术以及GIS相关技术,对太原市城市公园绿地可达性及景观格局进行分析.结果表明:①太原市城市公园绿地面积偏少且各行政区之间分布不均匀,其中杏花岭区城市公园绿地面积最小仅为0.99 km^2,占研究区的2.37%;②太原市城市公园绿地可达性整体较差,仅有不到50%的城市居民能在30min内通过步行方式到达最近公园;③太原市城市公园绿地整体分布较为均匀,破碎化程度较低,但其景观形状较为规则,不利于城市生物多样性的维护,且斑块丰富度密度较低.本研究成果可以为太原市合理优化绿地空间结构布局提供理论依据.

Urban park green space is an important part of the urban green space system and an important criterion for measuring the urban human settlement environment and urban environment.In order to provide a theoretical basis of the rational optimization of the spatial structure of green space in Taiyuan City,this study takes the central urban area of Taiyuan(within the circumcity expressway)as the research object,and uses remote sensing technology and GIS-related technology to analyze the accessibility and landscape pattern of urban parks in this city.The results show that the green area of urban parks in Taiyuan City is rather small and its distribution among the administrative areas is uneven.The green area of urban parks in Xinghualing District are only 0.99 km^2,accounting for 2.37% of the study area.The overall accessibility of urban park green space of Taiyuan is relatively poor and only less than 50% of the urban residents can walk to their nearest park within 30 minutes.The overall distribution of urban park green space of Taiyuan is relatively uniform,and the degree of fragmentation is low,but its landscape shape is fairly regular,which is not conducive to the maintenance of urban biodiversity,and the density of plaque richness is low.