In view of some unresolved key methodological problems (such as defining diagnostic criteria of evaluation factors, single factor evaluation and integrated evaluation of soil quality) in soil quality evaluation at present in China and being due to fuzziness in soil quality evaluation, this paper puts forward the idea and methods for establishing single factor evaluation and integrated evaluation models by applying fuzzy mathematics. The evaluation models are applied and verified with satisfactory results.
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Wang Jian-guo, Yang Lin-zhang, Shan Yan-hong. APPLICATION OF FUZZY MATHEMATICS TO SOIL QUALITY EVALUATION[J]. Acta Pedologica Sinica,2001,38(2):176-183.