Nonlinear Multi-scale Intelligent Assessment Of Geological Environment

Tibet is located in the southeast margin of the Tibetan Plateau in Western, rich in natural resources, outstanding geographic location, an important geopolitical position. Western Development of China's important and an important area of mineral resources to succeed. Development of mineral resources in KangDong area is extremely sensitive and fragile geological environment for the bottom, in the complex geological structure and topography of transition zone and fragile high-altitude alpine areas, the face of geo-ecological development of mineral resources, the uncertainty of the environment and complexity of features, an urgent need to establish different spatial and temporal scales of geo-ecological environment carrying capacity assessment, early warning integrated system, sort out the succession law of geo-ecological environment, scientific control of human activities to achieve the resources - human - environmental harmony.This article from the National Natural Science Foundation project "Development of mineral resources in Western Tibet geo-ecological environmental capacity" (item number: 40972225). Paper takes geological ecological environment of development of mineral resources at KangDong area as study object, geo-ecological environment comprehensive evaluation of the ecological safety as a quantitative research based, remote sensing, geological hazards, field sampling geochemical data, mineral resources exploitation and other conditions Collaborative multi-source data analysis and processing as the basis, based on the pressure (Pressure) - State (State) - Response (Response) model, combining features of the study area, from the interaction of human and environmental systems and the impact of starting to organize on the classification of environmental indicators, from large-scale (five counties in KangDong), mesoscale (JiuLong County), small-scale (typical mine) in three different spatial scales, the establishment of geo-ecological environment comprehensive index system; using AHP (AHP), principal component analysis, together class analysis and nonlinear mathematical algorithm GA, BP artificial neural network theory, by means of mathematical and statistical software SPSS nonlinear mathematical modeling software Matlab, integrated assessment of ecological environment construction of geological model; mixed programming, use Microsoft Visual Studio 2008 (C #) development called ArcGIS Engine9.3 Matlab components and custom dynamic link library, complete GIS-based "development of mineral resources in KangDong area Geological Evaluation system of ecological environment" of the development.Through the development of mineral resources in KangDong area integrated assessment of geological environment, clarity of the multi-scale geological study area ecological environment safety situation. Sort by area, large-scale assessment results into excellent, good, and poor: the JiuLong area, the safety of the ecological environment to excellent, good based; Luding, Danba area in both the main difference; Kangding, is Daofu ecological security for the four levels of cross-controlled areas, is extremely complex. Danba, Kangding, Luding, JiuLong, to the local ecological environment safety overload condition exists. Show that the mining activities, buffer, small watershed, a large basin are at risk linkage system, the development of mineral resources by the ecological environment and geological environment of safety evaluation is a positive correlation between the division; in the study area scale geo-ecological environment in general is safe, eco-bearing capacity, geo-ecological environment is good. Typical small-scale mining is better environmental quality of the surrounding area, water environmental quality levels for the Cleaner, mine development has little effect on the surrounding environment, mining of the effluent, emissions, tailings, waste rock and other pollutants, through the appropriate disposal control measures, on the local water, soil, crops, vegetation and does not produce significant effect on human health or harm.Correct assessment of human exploitation of resources caused by geological changes in the ecological environment, the development of resources and geological environment of risk aversion decision support, improve safety awareness of human ecology and building a harmonious society and population, resources, and environmental development of great significance. Our study area to improve the geo-ecological environment, from improving the socio-economic background, geo-ecological environment, human factors, natural environment background, the development of green mining roads and other aspects of sustainable development integrated measures.