Urban Green Space Planning and Design for Sponge City

Table 1

Landscape pattern indexes.

Index name	Patch density	Shannon diversity index	Average perimeter area ratio	Spread degree
Exponential space representation	Nonspatial component	Nonspatial component	Space configuration	Space configuration
Value range	>0	=0	>0	[0, 1]
Characteristic	Landscape fragmentation	Spatial heterogeneity	Landscape spatial structure	Optimal landscape pattern
Practical significance	It reflects human interference	Complexity of structure and function	Complexity of shape	Agglomeration degree or extension trend of different patch types