Geo-spatial analysis and optimization strategy of park green space landscape pattern of Garden City– A case study of the central district of Mianyang City Sichuan Province

The optimization of park green space landscape pattern is of great significance to the construction of an ecological civilized city. Through a case study of the national garden city – Mianyang City, Sichuan Province – and with the help of analysis softwares such as ENVI and ArcMap, the public green space landscape pattern in the central urban area has been quantitatively analyzed in terms of Normalized Vegetation Difference Index (NVDI) and landscape pattern index, and corresponding optimization strategies have been proposed. It is found out that: 1. NVDI in Fucheng District presents a growing trend from the perspective of spatial distribution characteristics, although the balance of NVDI increased significantly. 2. Urban park green space is highly fragmented under city scale, and the park green space landscape is featured by small patches and medium-sized and large scale coexisting. 3. Spatial distribution of park green space landscape types in Fucheng District is badly imbalanced and landscape structures are unreasonable 4. Calculation and analysis of landscape pattern index show the small patches in Fucheng District are highly spatially heterogeneous and fragmented with a large patch shape index. This paper aims to provide reference for the planning and construction of an urban park green space landscape.