《Table 1 Evaluation index system, index grading, assignment and weight of village-region CLQ uniform

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《Arrangement of High-standard Basic Farmland Construction Based on Village-region Cultivated Land Quality Uniformity》

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Notes:wai is the index weight of comprehensive evaluation of village-region CLQ uniformity；wbi is the relative weight of the difficulty of each index transforma-tion in the calculation of the transformation potential of the obstacle index

Thus，an evaluation index system of CLQ uniformity was constructed（Table 1）.Each index was quantified using the assignment method，according to the centesimal system.The optimal grading of each index was assigned 100 points，while other grades were assigned based on standard specifications such as the‘Regulation for gradation on agriculture land quality’（GB/T 28407-2012），‘Criterion of high standard farmland’（NY/T2148-2012），‘Criterion of high-standard basic farmland construction’（TD/T 1033-2012），and related studies，construction requirements，and its influence to the CLQ level and the high standard basic farmland construction of indexes.These were adjusted by combining these with the actual situation.The analytic hierarchy process（AHP）of the weighting method，which was rigorous and easy to operate（Ozdemir，2005），was used to set up the weights.In order to highlight the difference of CLQ in the study area，two indexes of the salinization degree and field slope，which were at the optimal level，were not selected for evaluation.The comparison of the importance of pairwise indexes was determined with reference to a related literature and combining these with the opinions of experts，as well as the differences and restrictions of indexes in the study area through the AHP.Both single and total hierarchical arrangements passed the conformance testing（random conformance rate，CR<0.1）.