Optimization and Allocation Method of Regional Groundwater Pollution Investigation Based on Analytic Hierarchy Process Model

Table 1

Indicators of groundwater in the affected area.

Target layer	Criterion layer	Index layer	Direction	Unit layer
Unit weight of regional groundwater pollution investigation	Chemical pollution	Contents of mercury, cadmium, lead, arsenic, and other elements	Inverse	Unit layers 1, 2, 3, …, N
		Organic pesticide content	Inverse	Unit layers 1, 2, 3, …, N
	Environmental factor	Lithology of main aquifer	Moderate	Unit layers 1, 2, 3, …, N
		The measure of area	Just	Unit layers 1, 2, 3, …, N
	Domestic pollution	Population	Inverse	Unit layers 1, 2, 3, …, N
		Domestic sewage	Inverse	Unit layers 1, 2, 3, …, N
		Domestic garbage	Inverse	Unit layers 1, 2, 3, …, N