阳泉一矿土地利用结构变化及景观综合稳定性评价

为揭示煤矸石回填复垦工程对复垦区景观生态的影响，运用GIS,RS和景观评价分析方法，选取2000年Landsat ETM和2014年Landsat OLI8遥感影像作为数据源，结合实地调查解译分类，分析了阳泉市一矿煤矸石回填复垦区景观变化状况，并对景观生态综合稳定性进行了评价。结果表明：在回填复垦区景观斑块变化状况中，未利用地和植被地类斑块面积分别减少了64和66 hm2，建筑用地和煤矸石地类斑块分别增加了107和22 hm2。各类型斑块面积变化程度高说明回填复垦工程使区域景观受到了干扰，景观类型斑块和生态稳定性发生变化。整个复垦区内景观破碎程度逐渐降低，景观格局呈现连续化、均衡对等化和向高连通性变化的发展趋势。研究区生态影响综合指数计算结果为0.362 6，景观生态在研究时期内保持稳定。各景观斑块类型的景观生态稳定指数均远远大于各景观斑块类型的干扰传播条件指数，而区域景观总生态稳定指数为1.69%，说明经过长期的回填复垦，复垦区内景观格局具有很高的稳定性且抗干扰能力强，生态修复己经进入良性循环状态，区域生态环境质量得到改善。

Analysis on changes of land use structure and assessment of landscape comprehensive stability in Yangquan 1stMine

The landscapes of coal gangue backfill reclamation region in Yangquan 1stMine underwent a remarkable land backfilling reclamation in the past decades.These areas need effective management strategies to protect the environment,at the same time,the sustainable development of land resources.In this paper,a study of pattern change was proposed using five landscape metrics and a stability analysis of features derived from land cover maps (Landsat ETM in 2000 and Landsat OLI8 in 2014) in order to investigate their magnitude and landscape ecology comprehensive stability in the gangue backfilling reclamation region from 2000 to 2014.The results illustrate that:the area of each pattern with a high degree of variation described that the regional landscape was disturbed by backfill reclamation which gave rise to changes within landscape pattern and ecological stability,the landscape fragmentation have been gradually reduced.The development trend of landscape pattern manifests continuous,balanced and high connectivity.The landscape ecological stability index of landscape pattern types was much larger than interference propagation conditions index.The total area of landscape ecological stability index was 1.69%,which indicated that the landscape pattern of reclamation region with strong anti-interference ability was provided with high stability after a long period of backfill reclamation.Ecological remediation of backfill reclamation region have been into a virtuous circle state that signifies that regional ecological environment quality has been improved.