Evaluation and change of arable land economic value based on land consolidation

The evaluation of arable land economic value is part of land consolidation work, which results from the basis of economic benefit appraisal for arable land. Taking Lixin Land Consolidation (LC) Project of Laiwu City as an example, combining GIS technology, field survey with in-door analysis, index system, evaluation methods of arable land economic valuation and the change in economic valuation based on LC were studied. The results indicated that grade spacial distribution, area and total valuation of arable land economic value changed much before and after LC. Before LC, arable land was mainly dry land and was graded 2, 3 and 4, which occupied 87.20% of total arable land area, and land of grade 1 was little. Arable land was converted into vegetable land and irrigable land and grades of arable land economic value were basically 1 and 2 after LC, which occupied 99.88% of total arable land area. Total arable land economic value after LC was 1.286 times before LC and LC economic benefit was prominent. The method has instructive significance for arable land economic evaluation of LC, and the results may provide scientific basis for economic benefit appraisal of Lixin LC Project.