Study On Water Security Of Ma Lian River Basin

Water resources are essential natural resources for human survival and development. And its also are an important basis for maintaining the economic and social sustainable development and ecological balance. Any developments of region or nation all need enough water resources as a guarantee. But appeared many water safe problem along with the rapid development of keeping on of world population growth and economic society, such as water resources missing, water pollution of the environment, soil erosion and the disaster of Flood and drought multifarious etc., and caused some other safe problems that have relation with water safety from here, such as Human body health safety, Food safety, Economy safety, Eco-environment safety, Social problems, and Safety and national security etc. Many regions in world, these problems are already come endangering mankind normal existence, check and supervision social economy of can keep on a development, influence environment quality and bar mankind civilization progress of initial environment problem.Water safe problem is one very complicated of comprehensive sex problem. The factor for involving is numerous, it is also tedious to evaluate. In domestic and international, the research concerning this aspect is still placed in a beginning stage. Total see, the research concerning water safety still settles sex research currently many, the fixed amount studies little, related research many, directly study little, have never formed a theories system of system. Therefore this selected works takes the quantity of water safety to turn to evaluate is the main contents of water safety research.This text refer to the existing studies, analyzed currently the present condition and background of water safety research, the problem of Ma Lian river area water safety existence, and turn the request of evaluation according to the quantity, the research built up the principle and method of water safety evaluation index sign system establishment, and select by examinations a data is foundation for actually measuring of 1990-2005, build up the evaluation index sign of water safety system. And studied Entropy is the power that evaluates index sign to be worth of endow with a value method, make use of the Multi-objective and multilevel fuzzy optimization model target to carry on water safety evaluation to the Ma Lian river area. Pass to the evaluation of the result carry on analysis and discover Ma Lian the river area water safe condition is total to present continuously worsen trend, but still don't exert a homology on the different evaluation main factor, such as the aspect from the drinking water safety and the control disaster analysis, Ma Lian river area water present the buoyant trend for safe recent 15 years, but self-contradict from water resources supply and demand, water resources safety, food safety etc. analyzes, Ma Lian the river area water safety presents the descendent trend. Finally put forward the opinion and suggestion in analyzing Ma Lian the river area water safe present condition and the problem.This text is totally divided into six chapters. Chapter 1 carries on analysis to background, meaning and present condition of current water safety research. Chapter 2 analyzed the district characteristics of the Ma Lian river area and main water safe problem of the existence. Chapter 3 analyzed water safety evaluation index sign to really settle principle and power to weigh a value to really settle a method. Chapter 4 analyzed the reason and method of water safety evaluation model from the angle system of misty mathematics. Chapter 5 adopts the principle of misty mathematics to carry on an evaluation to the water safe condition of Ma Lian river area. Chapter 6 carries on analysis and puts forward homologous counter plan measure as a result to the evaluation.