Research on the Relationship between Urban Agricultural Nonpoint Source Pollution and Rural Residents’ Income Growth

Table 3

Influencing factor index stationarity test.

Sequences	(C, T, K)	ADF statistics	0.05 critical value	Conclusion
LnNPK	(C, T, 0)	−4.1602	−3.6450	Stationary
LnPestic	(0, 0, 0)	−2.4708	−1.9581	Stationary
LnPF	(C, 0, 0)	−6.3853	−3.0124	Stationary
LnFarm	(C, T, 0)	−3.6233	−3.6584	Nonstationary
DLnNPK	(C, T, 0)	−10.392	−3.6584	Stationary
DLnPestic	(C, 0, 0)	−4.6850	−3.0207	Stationary
DLnPF	(0, 0, 0)	−4.6566	−1.9591	Stationary
DLnFarm	(C, 0, 1)	−3.6091	−3.0299	Stationary

Note. In (C, T, K), C means intercept, T means trend, K means lag, and 0 means no intercept or trend.