ABSTRACT

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.

摘要

公园绿地景观格局的优化对建设生态文明城市具有重要意义。通过对国家园林城市四川省绵阳市的案例研究，并借助ENVI和ArcMap等分析软件，根据归一化植被差异定量分析了中心城区的公共绿地景观格局。提出了指数（NVDI）和景观格局指数以及相应的优化策略。研究发现：1.从空间分布特征看，抚城区的NVDI呈增长趋势，尽管NVDI的平衡显着增加。2.城市公园的绿地在城市规模下高度分散，公园绿地景观以小片状和中大型并存为特征。3.抚城区公园绿地景观类型的空间分布严重失衡，景观结构不合理。4.景观格局指数的计算与分析表明，抚城区的小斑块空间高度不均一，且具有较大的斑块形状指数。本文旨在为城市公园绿地景观的规划与建设提供参考。景观格局指数的计算与分析表明，抚城区的小斑块在空间上高度不均一，且具有较大的斑块形状指数。本文旨在为城市公园绿地景观的规划与建设提供参考。景观格局指数的计算与分析表明，抚城区的小斑块在空间上高度不均一，且具有较大的斑块形状指数。本文旨在为城市公园绿地景观的规划与建设提供参考。