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

The landscapes of coal gangue backfill reclamation region in Yangquan 1st Mine underwent a remarkable land backfilling reclamation in the past decades. These areas need effective management strategies to protect the envi- ronment,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 sta- bility in the gangue backfilling reclamation region from 2000 to 2014. The results illustrate that:the area of each pat- tern 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 land- scape ecological stability index of landscape pattern types was much larger than interference propagation conditions in- dex. 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.