Thematic information extraction of constructed wetland ecological GIS in mining subsidence area

With development of the constructed wetland technology and extending of eco-city concept, it is popular that the sustainable evaluation and land reclamation, and is difficult to quantitative assessment in wetland ecological information of subsidence area in mining field. This paper discusses the need of sustainable evaluation and land reclamation and mainly introduces the constructed wetland and ecological management system based on GIS of Tangshan city, which take the COMGIS model. There is a new plan of data organization, which includes spatial data, subsidence information and remote sensing image of the interested region, it is possible to build a visual spatially management platform of GIS for ecological evaluation and land reclamation by means of the combination of graphic data and attribute data, which is advanced platform for land reclamation of mining subsidence and ecological management of assessment and spatial analysis.