Table 5.

Prediction results of dynamic assessment parameters for ecosystem services value

Index	Years					Accuracy test
	2021	2022	2023	2024	2025	$P$	$C$
National per capita GDP	78,040.20	83,152.58	88,439.16	93,905.86	99,558.84	1	0.005
Engel’s coefficient of national towns	27.20	26.78	26.37	25.96	25.56	1	0.041
National rural Engel coefficient	28.95	28.26	27.59	26.94	26.30	1	0.031
National urbanization rate	65.30	67.01	68.77	70.57	72.42	1	0.007
Engel’s coefficient of Shijiazhuang Town	24.33	23.60	22.87	22.16	21.45	1	0.253
Shijiazhuang rural Engel coefficient	22.69	21.94	21.18	20.44	19.70	1	0.094
Shijiazhuang urbanization rate	70.81	73.11	75.49	77.93	80.46	1	0.005
Shijiazhuang’s per capita GDP	67,597.90	71,213.80	74,932.46	78,756.80	82,689.82	1	0.054