Arable land quality evaluation and potential evaluation are one of important technique work of land consolidation, which evaluation result is important basis of land consolidation performance appraisal. But two evaluations are not quite similar. Taking Lixin land consolidation (LC) project of Laiwu City as an example, integrating GIS technology, method of field survey and in office analysis, indexes system, method of arable land quality evaluation and economic potential evaluation and their change based on LC were studied. The result indicated that grades of arable land quality were mainly 2, 3 and 4 before LC, which occupied 89.32％ of total arable land area; after LC, grades of arable land quality were basically 1 and 2, which occupied 99.88％ of total arable land area; total arable land quality after LC is 1. 3026 times before LC. Grades of arable land economic potential value were mainly 2, 3 and 4 before LC, which occupied 87.20％ of total arable land area; grades were basically 1 and 2 after LC, which occupied 99.88％ of total arable land area. Total arable land economic potential after LC is 1. 286 times before LC. Land consolidation performance was prominent and economic potential evaluation is more reflect arable land production capacity than quality evaluation.%耕地质量评价和耕地经济潜力评价都是土地整理重要技术工作之一,其评价结果是土地整理绩效评价的重要依据,但两者又不尽相同.本文以莱芜市里辛土地整理项目为例,采用GIS技术、实地调查和室内分析相结合,探讨了土地整理耕地质量评价及经济潜力评价的内涵、指标体系、整理前后变化及其差异.结果表明,研究区整理前耕地质量级别主要为二、三和四级地,占总耕地面积的89.32%,整理后基本为一、二级地,占95.55%,整理后的耕地质量总体水平是整理前1.3026倍;整理前耕地经济潜力级别主要为二、三和四级地占总耕地面积的87.20%,整理后基本为一、二级地,占99.88%,整理后的耕地总经济潜力是整理前的1.286倍.土地整理绩效显著,但耕地经济潜力更能反映耕地生产能力.
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