Abstract:
The mining of mineral resources affects the physical and chemical properties and ecological environment of the land.The cultivated land in the mining area is very vulnerable to the destruction and pollution of mining activities, and it is easy to change in soil quality, utilization conditions and soil ecology.Its physicochemical properties and cleanliness affect whether the agricultural products produced are edible and traded, the evaluation of cultivated land health status in mining area is of great significance for the rational utilization of local resources and food safety supply.The paper analyzes the relevant standards and factors of cultivated land quality evaluation comprehensively, and suggests that the health status evaluation of cultivated land in the mining area should select the profile configuration, effective soil thickness, surface soil, soil organic matter content, soil pH value, irrigation and drainage conditions, slope, field regularity, soil microbial quantity and soil enzyme activity from the aspects of the natural resources background, utilization conditions and ecological environment conditions.The pollution degree of heavy metals in soil was evaluated.The evaluation method is suitable for factor method, and the percentage system is used to assign scores to different levels of indicators, select some evaluation units to carry out trial evaluation, and carry out overall evaluation after scientific demonstration of the results of trial evaluation.The evaluation results are helpful to clarify the utilization conditions and methods of the evaluation unit, and can serve for the safe use of agricultural land, the formulation of land reclamation and ecological restoration programs, etc.