基于元素毒性赋值的模糊数学环境质量评价

利用模糊数学方法，根据元素毒性的大小进行权重赋值，对成都经济区近地表大气尘进行地球化学环境质量评价。结果显示：不同城市中，成都、乐山、眉山的大气环境质量较好，处于一级清洁级别；眉山、雅安的大气环境质量处于二级安全级别；德阳的大气环境质量已经处于三级警戒级。不同地区中，绵阳和眉山的大气环境质量较好，处于一级清洁级别；德阳和雅安处于二级安全级别，成都和乐山处于三级警戒级.

FUZZY MATHEMATICS GEOCHEMISTRY ASSESSMENT ON ENVIRONMENTAL QUALITY BASED ON INDEX WEIGHT DETERMINATION OF ELEMENT TOXICITY：A CASE STUDY OF AIR DUST NEAR GROUND IN CHENGDU ECONOMIC REGION

By using fuzzy mathematics method，the geochemical assessment on environmental quality of air dust near ground in Chengdu economic region was performed according to index weight determination of element toxicity.The result shows that for cities，the atmospheric environment qualities（AEQ） of cities including Chengdu，Leshan，Meishan are fine，belonging to the first order of clean level；AEQ of Meishan and Yaan fall in the second order of safety level；AEQ of Deyang belongs to the third order of alarm level，which should be paid more attention to.As for districts，the AEQ of Mianyang and Meishan are fine，belonging to the first order of clean level；Deyang and Yaan fall in the second order of safety level；Chengdu and Leshan belong to the third order of alarm level.