Landscape Pattern Analysis for Mining Area Based on Optimal Grain Size

The 60 m was determined as the optimal grain size for landscape pattern analysis with the methods of landscape index grain effect analysis and data loss assessment based on the Landsat images in 1983, 1993, 2003 and 2013 in Jiawang mining area. Landscape pattern change including patch level index and landscape level index was analyzed in this paper based on the optimal grain size. The results show that the regional landscape pattern including landscape level index showed the trends of gradual fragmentation, heterogeneity and connectivity downward driven by exploiting coal resources and urbanization before 2003, while the landscape pattern including landscape level index showed trends of continuous, equalization and connectivity index showed the trends of increase driven by the implementation of mine land reclamation projects, balancing urban and rural development as well as regional development since 2003. Farmland, construction land and water landscape patches changed actively with the time. The landscape pattern including patch level index showed trends of fragmentation, connectivity decreased driven by coal mining and other activities which changed more complex driven by urbanization during the period of 1983-2003.Construction land and water landscape patches showed the trends of high connectivity, patch regularization during the period of 2003-2013.