济南市近30年矿产开采遥感监测

Dynamic Monitoring of Mining in Jinan City for Nearly 30 Years

利用遥感技术可快速准确地提取矿产开采的分布和面积,为环保部门执法管理提供及时、全面的信息。基于近30年(1985—2015年)来Landsat系列卫星影像,采用决策树分析和面向对象的分类技术,通过人机交互方式,提取出矿产开采的精细图斑。结果表明,从1985到2015年,矿产开采面积由3.35 km2增至35.11 km2,呈持续增大趋势。增速最快的时间集中在2005—2010年,说明这个期间段,济南市矿产开发强度最大。

The distribution and area of mining can be obtained quickly and accurately by remote sensing method, providing useful information for the environmental protection management depart-ment. Based on the Landsat image from 1985 to 2015, the decision tree analysis method and obj-ect-oriented classification technology were adopted. The fine spots of mining are extracted by co-mbining automatic and manual method. The results showed that the mining area has increased continuously for nearly 30 years. The area of mining increased from 3.35 km2 to 35.11 km2 and showed a continuous increasing trend. The fastest growing time concentrated in the 2005-2010 which showed that the city has the largest intensity and widest range of mining during this period.