基于遥感信息的河北省典型石灰岩矿区生态变化趋势研究

Trend analysis of ecological change in typical limestone mines in Hebei based on remote-sensing information

选取了河北省石灰岩矿山相对集中的2个典型矿区作为研究对象,利用1987年和2007年两不同年份的遥感信息资料,结合实地调查,解译分析了2个典型矿区的生态环境变化趋势及存在的问题,结果表明,矿区开采面积扩展迅速,且主要占用了原有灌草地和未利用地,典型区受破坏面积所占比例和水土流失量增加,生态破坏强度和区域的环境敏感性逐渐加大,保护要求越来越高。

Two mine areas, where the distribution of limestone is relatively rich in Hebei province, were selected as objects of this study. Combined with field survey, using the remote-sensing information of 1987 and 2007, we analyzed the ecological environment trend and problems in these two typical mining areas. The result shows that two mining areas are expanding rapidly by chiefly taking over the original bush-and-grass land and unused land; in the selected areas, the proportion of the destructed area and the quantity of soil and water loss are both growing; ecological damage, along with environmental sensitivity of the region, is gradually increasing; more and more protection measures are required.