Green City Landscape Design and Planning Based on GIS and Analytic Hierarchy Process Model

Table 6

SPEI change trend statistics/%.

Project	Variation trend of SPEI in years and seasons
	Year	Spring	Summer	Autumn	Winter
Increasing trend	8	22	36	33	38
Significant increase	6	3	3	4	6
Reducing trend	4	31	64	62	52
Significant reduction	2	53	12	19	7