【摘要】 研究目的:综合评价区域农用地土壤健康状况,为区域农用地土壤的可持续管理与利用提供依据。研究方法:熵值理论与模糊物元建模相结合,建立基于熵权的农用地土壤健康评价模糊物元模型。研究结论:上海市各区县农用地土壤健康状况总体呈现出远郊优于近郊的趋势,重金属含量各区县欧氏贴近度均在0.9以上;污染程度总体较轻,清洁度良好;有机污染物含量各区县差异较大;市农用地土壤养分总体保持较好。更多还原

【Abstract】 The purpose of the paper is to comprehensively assess the soil health state of the area and put forward reference and suggestion for the sustainable management and use of the agricultural land. In combination with the entropy theory and fuzzy matter-element method,the paper established an entropy fuzzy matter-element model of agricultural land soil health based on entropy and used the model in the evaluation on the agricultural land soil health in districts and counties of Shanghai City. It is concluded that the soil health conditions of the land in districts and counties of Shanghai presently generally shows the following trend:the conditions are gradually better from far suburb to near suburb;as to the content of heavy metal,Euclid approach degree of all districts or counties are above 0.9;the contamination level is relatively low and cleaning degree is sound as a whole;there are large differences existing between different districts and counties in the contents of organic contaminations;the soil nutrients are maintained well in the city.更多还原