China’s Water Use Intensity Difference Analysis Of Time And Space

In the21century,the world is facing three great waters problems, namely, flood disaster, dry, water environmental degradation, and the three great waters has in different degree threat to raise the level of human life, social stability and economic development. Water resource utilization strength expression is certain areas of the water resources development and utilization degree. The local and the distribution of the time don’t even, and by natural, technology, economic conditions of the limits, and the needs of the ecological environment, an area of the water resources not may not should be exhausted consumption light, the development and utilization of water resources should be part of the only. It is estimated that the world water accounted for only a third of the rivers runoff. In order to understand a region or basin water resources may be using the maximum number of, that is, the bearing capacity of water resources, need to water resources can be estimate, so that the reasonable allocation of water resources and use provides the basis. Former to the balance of the supply and demand of water resources in the evaluation of the most, the effective utilization of water resources is equivalent to the total amount of water resources, lead to the calculation results of water resource in China is supply and demand situation in a very safe stage, the result is not very reasonable.Based on the water cycle, the water balance, the water resources and the ecosystem of the feedback mechanism as the theoretical basis, and established the theory of water resources can be model and actual water resources can be model, based on the theory of formation water resources utilization strength model and actual water resource utilization strength model. Though the investigation of the present situation of water resources development and utilization, statistics1997-2009year China current water and water level industries; Calculated the Chinese level basin water quantity available; Through the development and utilization of water resources in intensity evaluation, with the focus on the water resources development and utilization strength level division, and the time and space differences analysis. The results show that:(1) the actual water use intensity is low, the water resources can be LiYongLiang theory has basically and total water, flat theory to strength close to critical value1water resources.(2) the north China water resources utilization strength greater than southern water resource utilization strength, water resource utilization strength greater than east west water resource utilization strength.(3) liaohe river, the haihe river basin, the Yellow River and the huaihe river basin, northwest rivers for water resources utilization strength theory has more than close to or more than critical value1, affects the economic, social and ecological sustainable development.(4) from1997-2009years of river basin water resources use strength changes to the analysis of the huaihe river, the haihe river basin, the Yellow River basin in songliao basin, the annual rate of water resources utilization strength become larger, and the rest of the basin area of water resources utilization strength interannual variability is small. Water resources in our country by using strength variation distribution and water resource utilization strength size distribution are basically the same.(5) of the huaihe river, the haihe river basin, the Yellow River basin in songliao basin, the annual rate of water resources utilization strength become larger, and the rest of the basin area of water resources utilization strength interannual variability is small. The characteristics of water resource utilization strength as it happens and the size of the distribution agreement.The main content of this paper is as follows:The first part is the introduction, this paper expounds the background and significance, research situation, content, method and technical route.The second part are the theory and method for basic research, mainly expounds the water circulation and water balance theory, ecological water requirement theory, water resource utilization strength concept and calculation modelIn the third part is China water resources utilization strength calculation. Mainly based on the water resource utilization strength model, analyzes the elements variation.The fourth part is the conclusion and discuss part, summarizes the main research results and conclusions, water resources utilization of the research methods, scale strength, the precision and the uncertainty problems are discussed. And in the light of this the deficiency and defects, the paper puts forward the countermeasures and the future research direction.The fourth part is discussed, the research process of accuracy problem and uncertainty, and discusses the research will be and the former research Angle, the method, the results were compared.