Structural equation model of the spatial distribution of water engineering facilities along the Beijing-Hangzhou grand canal and its relationship with natural factors

Heritage Science

Table 6 Effectiveness analysis table

Conduction path	Effects	Effect index	Bias-corrected 95% CI
Conduction path	Effects	Effect index	Lower	Upper
(Path 1) Main stream aspect → Drainage area → Water engineering facilities	Indirect effects	0.002	− 0.005	0.012
	Direct effects	− 0.112	− 0.175	− 0.049
( Path 2) Main stream slope → Drainage area → Water engineering facilities	Indirect effects	0.001	− 0.005	0.008
	Direct effects	− 0.166	− 0.240	− 0.090
(Path 3) Tributary aspect → Drainage area → Water engineering facilities	Indirect effects	0.010	0.002	0.022
	Direct effects	0.015	− 0.049	0.079
(Path 4) Tributary slope → Drainage area → Water engineering facilities	Indirect effects	− 0.017	− 0.038	− 0.005
	Direct effects	− 0.037	− 0.097	0.029
(Path 5) Drainage area water engineering facilities	Direct effects	− 0.096	− 0.162	− 0.035