Sponge City Planning and Information System Development Based on Geographic Information Fuzzy Processing

Table 1

Evaluation factors for the suitability of sponge city construction in the secondary zone.

Factor	Range	Scoring
Green area rate	<20%	1
	20%∼30%	2
	30%10%	3
	40%∼50%	4
	>50%	5
Surface rate	<3%	1
	3%∼6%	2
	6%∼9%	3
	9%∼12%	4
	>12%	5
Proportion of built-up area	>85%	1
	60%∼85%	2
	45%∼60%	3
	20%∼45%	4
	<20%	5