The Study On Eco-city Construction Restricted By Water Resources In Yinchuan City

The city is the mainly melting-pot for mankind, meanwhile, it is the pole pit of economic growth in region. The rapid speed of industrialization and urbanization has made resources destroyed, the environment polluted and ecosystems broken etc. The late 20^th centuries, the idea of sustainable development has brought the new vitality of source for the city. For city restricted by water resources in arid area, there has much close relationship between eco-city construction and water resources utilization. The paper combines with eco-city theories and practical situation of Yinchuan city, analyzing the ecosystem of Yinchuan city, emphasizing the approach of eco-city restricted by water resources. In the research on ecosystem footprint of Yinchuan City, the author amends some approaches of ecosystem footprint. Calculating the per capital consumption for whole city, the paper makes the value between actual amount of consumption and error margin.At the same time the paper makes use of the different methods offered eco-system, ecosystem, city water resources pressure index number methods etc. Three aspects of analysis display the same results—the city ecosystem not being healthy.The paper analyzes the supply and demand equilibrium at present condition and the future development trends of the water resources in Yinchuan City. It discusses the aim of eco-city for urban scale, industrial structure, industry, agriculture, the ecosystem construction etc. In the paper, the author brings forward eco-city aim and model of eco-city constructions demand under the ecosystem city. Under the ecosystem city condition of the city water the resources development, it makes use of the approaches and the ecosystem city construction paths.Through above analysis, the paper obtains the following initial results:(1) Through analysis and estimation for the water resources demanding and supplying of Yinchuan City, analyzing the variety of each industry for water quantity, discussing the existing problems and future developments will appear problem of water resources utilization, such as "wasted, polluted, water deprivation". At last, the paper puts forward the water resources development of Yinchuan City to make use of the counterpane on this foundation, namely with "economy, protect" for mode of water utilization.(2) The paper exerts various methods to evaluate the healthy condition of the ecosystem system in Yinchuan City. Through modified the approaches to ecosystem footprint and city ecosystem healthy evaluation, the paper analyzes the present condition, educing the ecosystem system of Yinchuan was placed in the ill-health condition, the mainly negative effect because the city development was placed in the initial stage, the economic structure and organization capital have some worse.(3) Analyzing the region and local environment, the paper puts forward the contents and targets for eco-city construction, and emphasizes city concrete target: "the resources sustainable utilization, nature diapason, economy efficiently, social civilization". At last, the paper puts forward the evaluation index system including determine the nature and fix quantify.