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With the population increasing and the social economy developing, environmental problems appear continuously, so it is an important theme how to evaluate the status quo of regional sustainable development. Firstly, this paper discusses the meaning of sustainable development, presents its three-dimension model and indexes evaluation system. Secondly, the AHP-Fuzzy is introduced step by step. Finally,...
The protective development of ionic rare earth deposits in southern of China, a unique class of valuable middle-heavy rare earth resources in China, and its impact on environment have been issues concerned. After briefly introducing the development status of rare earth resources in Southern of China, combining with economic theories, the paper proposes that rare earth resource development and ecological...
Using the heavy metal pollution data tested uninterruptedly of the acid mine drainage (AMD) in tailings pond and waste rock site as the case, this paper studies the oxidation mechanism of sulphide minerals and the dilution mechanism of heavy metal ions. And the rules of the connection between pH value and heavy metal ions' concentration are also studied by applying mathematic statistics method. The...
Heavy metal contamination in mining areas has the features of time series, so it can be predicted with exponential smoothing model. On the basis of 1995-2007 monitoring data of Copper (Cu) at the surface water monitoring point 500m to the downstream of the sewage outlet in a copper ore, with cubic exponential smoothing method, the predicting model of heavy metal Cu is established through selecting...
On the basis of a large number of investigations and analysis of the ecological and environmental problems in mining areas and aiming at the commonly existed ecological environment problems and present situation of ecological protection in mining areas, the article establishes an evaluating index system adapted to ecological environment in mining areas by using "pressure-state-respond" concept...
Heavy metal pollution in mining areas possesses the character of grey system, so grey model GM (1, 1) can be used to predict heavy metal pollution. On the basis of heavy metal monitoring data in a certain sulfide mining area from 2006 to 2008, prediction models of copper (Cu), manganese (Mn) and lead (Pb) in mining areas have been built with grey model GM (1, 1) to predict heavy metal pollution contents...
Studies of heavy metal pollution in mining areas mainly focus on non-dynamic and investigative aspects, but the forecasting of heavy metal migration and conversion is seldom considered in the contexts of both time structure and space structure. In this paper, with the concept of rescaled-range (R/S) analysis of fractal theory, the data of heavy metal copper (Cu) pollution in a certain iron sulfide...
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