基于MSPA的城市绿色基础设施景观格局时空变化分析

Spatial and Temporal Change Analysis of Urban Green Infrastructure Landscape Pattern Based on MSPA

绿色基础设施(GI)是城市的重要组成部分,健全的绿色基础设施网络有助于城市的可持续发展.以郑州市沿黄河南岸六区县为研究区,基于形态学空间格局分析(MSPA)法和景观生态学理论,运用Fragstats、ArcGIS、Guidos Toolbox等软件,对研究区1997—2019年的绿色基础设施景观格局时空变化进行分析.研究结果表明,研究区GI总面积先增加后减少,且总体呈减少趋势;研究区东西部GI斑块间的连通性较弱,两极分化明显;GI核心区面积总体上呈减少趋势,意味着GI斑块趋于破碎化;研究区GI斑块的景观破碎化程度加深,景观聚集度变差,景观趋于丰富和复杂化,景观异质性增加.本研究可为研究区未来GI网络规划与建设提供参考.

Green infrastructure is an important component of a city.Sound green infrastructure network contributes to the sustainable development of a city.Taking six districts and counties along the south bank of the Yellow River in Zhengzhou City as the study area,based on the morphological spatial pattern analysis(MSPA)method and landscape ecology theory,the spatial and temporal change of the landscape pattern of green infrastructure in the study area from 1997 to 2019 was analyzed by using Fragstats,ArcGIS,and Guidos Toolbox softwares.The results of the study show that the total GI area in the study area first increases and then decreases,with an overall decreasing trend.The connectivity between the GI patches in the east and west of the study area is weak,and the polarization is obvious.The area of the GI core area in the study area shows a decreasing trend on the whole,indicating that the GI patches tend to be fragmented.The degree of landscape fragmentation of GI patches in the study area is deepened,the landscape aggregation degree becomes worse,the landscape tends to be richer and more complex,and the landscape heterogeneity increases.This study can provide a reference for future GI network planning and construction in the study area.