关键词: 矿区复垦, 土壤肥力, 综合评价, 内梅罗指数法

Abstract: In order to clarify the current situation of soil fertility in Fushun West Open-pit Mine, this paper takes Fushun West Open-pit Mine as the research object, considers the main physical and chemical properties of the soil, selects soil bulk density, soil moisture content, soil porosity, soil mechanical composition, pH value, organic matter, total nitrogen, total phosphorus, total potassium, alkali-hydrolyzable nitrogen, available potassium, and available phosphorus as the soil fertility evaluation indicators, and uses the modified Nemero index method to comprehensively evaluate the soil in the mining area. The evaluation results showed that the comprehensive index of soil nutrients in the sample plots of the northern slope area, the southern slope deformation area and the western slope restoration area was between 0.4 and 0.6, and the soil nutrients were graded as Grade III, and the soil nutrient level was average; The comprehensive index of soil nutrients in the sample plots of Dongbang mining area is between 0.2 and 0.4, and the nutrient grade is II, and the soil nutrient level is relatively poor. The order of size is the sample plot of the landslide area in the north side>the deformation area in the south side>the sample plot of the repair area in the west side>the sample plot of the mining area in the east side. It can be seen that the soil nutrient in the east side of the west open pit is relatively deficient, the soil in the west side is slightly deficient, and the soil nutrient in the north side and the south side is relatively rich.