采矿废弃地利用适宜性评价研究—以永年县超贫磁铁矿为例

Abstract

土地适宜性评价是根据研究区土地自然属性和经济属性，从土地利用的要求出发，全面衡量土地对某种用途的适宜性及适宜程度，为科学调整用地结构，合理开发未利用土地提供依据。文章以永年县超贫磁铁矿采矿废弃地为例，依据土地限制因素的影响大小，选取地貌特征、土壤有机质(%)、表土质地、灌溉保证率、有效土层厚度(cm)等5个评价因子，采取极限条件法，划分了露天采坑、废石堆、废弃尾矿库等3个评价单元，通过分析评价得出一套行之有效的采矿废弃地利用适宜性评价研究方案。 Land suitability evaluation is based on the natural and economic attributes of land in the study area, from the requirements of land use, gives a full measure of the suitability and suitability of the land for a particular purpose, and provides the basis for scientific adjustment of land use structure and reasonable exploitation of unused land. The article takes Yongnian County super poor magnetite mining wasteland as an example, according to the influence of land restriction factors, selects the evaluation factors, including geomorphic features, soil organic matter (%), topsoil texture, irrigation guarantee rate and effective soil thickness (cm) and so on. It takes the limit condition method and selects three evaluation units, including open pit, waste rock pile and abandoned tailings reservoir which were divided. Finally, the article gives a set of effective evaluation of the use of mining waste evaluation program.