The Dynamic Evaluation of Ecosystem Service Values in Pingdingshan's Mining Areas

By TM remote sensing images and GIS ways, the land use of Pingdingshan's mining areas in 1978, 1994 and 2006 was analysed and changes of ecosystem service value were calculated. With the value of ecosystem services Costanza formula and Xie Gaodi and others unit area ecological service value table, the results indicate: 1) from 1978 to 1994, forest area in Pingdingshan Mining area decreased by 2068.9 hm2; unused land increased by 1853.4 hm2; ESV reduced from 267,042,412.6 yuan to 306,912,145.0 yuan. 2) from 1994 to 2006, there was a rapid decline in arable land, reducing by 1885.4 hm2, forest area increased by 1664.1hm2, in the same period ESV increased from 267,042,412.6 yuan to 290,815,006.5 yuan; 3) Woodland and farmland constitute the main body of value of ecosystem services. Nearly three decades ecological quality of study area decreased but in recent years it has been improved.