Ecological Footprint Analyse On Sustaining Development Capacity Of Liaoning Central Urban Agglomerations

The sustainable development capacity of eco-environments in the Urban Agglomerations of central Liaoning was systematically studied in this paper. We used multidisciplinary principles and methods such as ecology, environmental chemistry, grey forecasting theory and statistics etc. The main conclusions as follows:1. The characteristics, status and evolvements of water resources and water environments, soil resources and soil environments, mineral resources and mine geological environments in the Urban Agglomerations and its different cities of Central Urban Agglomeratin were counted and analyzed systematically. Relationships between service efficiency of resources and changes of eco-environment were also analyzed. Then we concluded that :①The amount of water resources per capita of Urban Agglomerations was low, changed greatly interannual and distributed unevenly. The total capacity of water supply decreased. Service efficiency of water resurous in Urban Agglomerations improved as a whole,But the shortage of water resource has limited the sustainable development of Urban Agglomerations evidently. About 75% of the surface water of Urban Agglomerations was in Grade v or below. The treatment and recycle efficiency of industrial wastewater increased, and the discharge of industrial wastewater reduced year by year, but discharge of various pollutants changed fluctuantly. With population's growth, discharge of domestic wastewater increased. Also with the extensive use of pesticides and chemical fertilizers, the water environmental stress will augment, and water shortage resulted from water quality degradation will be rather serious.②Long-term pollution of soil resources in the Urban Agglomerations resulted in soil quality degradation. Value in used per capita of land in Urban Agglomerations is increasing. But with growing of population, urbanization accelerating and improvement of people's living condition improving, the stress of soil environments is getting wider.③Long-term, high-intensity mining resulted in serious shrinkage of mineral...