Guideline layer	Indicator layer	Calculation method	Description	Indicator attributes
Quantity	Total area to be remediated	TAR	This study refers to arable land, land for related supporting facilities, serving agricultural production (fields and canals, ditches, ponds and water, rural roads, etc.), and other agricultural land and vacant land of small size distributed among arable land, etc.	+
	Non-cultivated land coefficient	$N L C = D_{c} + D_{d} + D_{p} + D_{r} + D_{a}$	$D_{c}, D_{d}, D_{p}, D_{r}, D_{a}$ are the proportions of dry ditch, ditch, pond water surface, rural road and field can in agricultural land, respectively	+
	Reserve resource coefficient	$R R C = \frac{R}{A}$	R is the reserve resource of arable land in the village, A is the area of arable land in the village	+
Quality	Land use improvement index	$L U = 1 - \frac{Y_{i}}{Y_{\max}}$	$Y_{i}$ is the unit yield of the designated crop in the village under normal input, and $Y_{\max}$ is the highest unit yield of the designated crop in the province	+
	Land use improvement index	$L E = 1 - \frac{m_{i}}{M_{\max}}$	$m_{i}$ is the output-cost index of the designated crop in the village, and $M_{\max}$ is the maximum output-cost index of the designated crop in the province	+
	Irrigation guarantee rate	$I G R = \frac{D H + D R + D K}{3}$	DH is the density of rivers in the evaluation unit, DR is the density of reservoirs in the evaluation unit, DK is the density of ponds in the evaluation unit	+
Ecology	Patch density	$P D = \frac{N}{A}$	N is the number of cultivated patches in the village, A is the total area of cultivated patches in the village	+
	Area-weighted mean shape index	$A W M S I = \sum_{i}^{n} (\frac{0.25 P_{i}}{\sqrt{a_{i}}}) (\frac{a_{i}}{A})$	The perimeter of each patch is divided by the square root of the area, multiplied by the ratio of the patch area to the total area of cultivated land, which are then added together	-
	Aggregation index	$A I = [\begin{matrix} g_{i} \\ \max \to g_{i i} \end{matrix}]$	$g_{i i}$ is the number of similar adjacent patches of the corresponding landscape type, AI is based on the same type of area, calculated by the length of the common boundary between pixels	-