Land Use Changes in Shendong Coal Mining Area

The changing rules of the landscape elements and their distribution in Shendong coal mining area are analyzed by means of remote sensing images obtained in 2002, 2006, 2009. using support vector machine classification method, it can be classified into six land-use types: water bodies, grassland, shrub land, construction land, desert and Saline soil, bare rock and unused land. The following results were obtained: 1) The areas of construction 1and and water body have continually increased from 2002 to 2009; grassland, desert and saline firstly increased and then decreased; on the contrary ,the area of shrub land firstly decreased and then increased; bare rocks and unused land constantly decreased. 2) 2002-2006, Vegetation increased from 48.6% to 56.7%, forest area decreased sharply, while the grassland area increased gradually; 2006-2009,further expansion of vegetation increased from 56.7% to 73.4%, because the structure of vegetation has greatly changed, forest area increased dramatically, while the grassland area decreased. This are shown unstable ecological environment of Shendong area. 3) the total area of desert, saline soil, bare rock, unused land were reduced from 48.2% in 2002 to 39.2% in 2006,even 24.5% in 2009, because Bare rock and unused land decreased, mainly unused land transformed into building land, and bare rock slowly covered by shrub land.