Study And Application Of Ecological Construction Planning And Regenerated Wetland Construction Technology In Resource-based City

This year,the government at all levels,shifting main emphasis of work from enhancing economy construction,has begun to focus on development of green and environmental protection as domestic economy growth slows down gradually.However,the earlier extensive economy has brought about many social problems,such as environmental disruption and dispute between workers and peasants.This has influenced seriously people’ life and stable development of society;especially in Resource-based cities,in the case of resource exhaustion,how to minimize environmental damage triggered by resource exploitation,and keep ecological equilibrium has became one of key problems in urban structural transformation and upgrading at least cost.Based on kinds of methods,such as field investigation,consulting,theoretical analysis,and detection etc.,through analyzing and researching ecological evolvement feature on land subsidence at coal mine,the article has made overall plan of artificial wetland,and then made study on key technology of wetland ecological restoration,phytoremediation,landscape construction technology.According to these research results,demonstration area of artificial wetland was built.Main contents are shown as follows:1)In Huaibei mining area,considering coal seam occurrence conditions,overburden rock distribution,lithologic features,on the basis of development on mining technologies in the past 60 years,the article compared theoretical calculation results with actual observation,and then obtained law of subsidence and rock layer movement at high groundwater level mining area.2)It analyzed regional mining conditions and stability at coal resource area,goaf in Huaibei city,while planning ecological construction outside city and green ecology at coal mining subsidence area in the middle of city in case of natural ecology features and subsidence area characteristics in Huaibei city.3)It has improved landscape construction technology in subsidence area,perfected ecological zone construction technology for enjoying the sight of lakeshore and vegetation protection technology for lakeshore.In addition,with a view to problems triggered by high phreatic water level and large water area in subsidence zone,the article proposed landscape layout and vegetation selecting,made landscape demonstration plot construction of artificial wetland in subsidence area.4)Taking into consideration of some other problems including thin soil layer on Natural Mountain,few and far among vegetations,uncovered mining etc.,the article made analysis of soil and vegetation damage,did research on vegetation restoration technologies on uncovered mountains,as well as applied demonstration project.5)The article analyzed land-use classes on the basis of multiband remote-sensing interpretation data in the main urban areas of Huaibei city,as well as made study of comprehensive land-use plans among urban construction land,green ecological land and water body.The results show that focus on land use is changing to urban ecosystem from coexistence in urban and agricultural system.Figure50;Table12;Reference 45...