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As social and economic development, people's quality of life and living standards improve, people increasingly pay attention to the quality of life, urban artificial landscape water more and more in our lives, though it can improve the living environment, but because of its quality change also brings more new environmental problems. If you can artificial landscape of the city the status of water bodies have more accurate grasp, and can even be accurately predicted, so that we can promptly stop the water quality to deteriorate. The topics to Xi'an Qujiang water environmental issues as a starting point, around the water environmental protection and planning work will be an important part of the two - water quality assessment and water quality modeling, carry out related research work, the main research contents and results are: 1 the express urban landscape water features and functions, investigation and analysis of urban landscape water pollution situation, identify their characteristics and major sources of pollution; 2. investigation Qujiangchi geography, natural, hydrological conditions, the basic situation, and from the 2009 10 months to 10 years in January, near the water once a week sampling sampling, monitoring of projects COD Mn , TP, TN, NH 3 -N, NO < sub> 3 -N and NO 2 -N This six; 3. According to the measured water quality near the pool then use Nemerow each individual indicators for each index formula Time and spatial analysis. Qujiangchi temporal distribution and water quality characteristics analysis showed that: Connect with Lotus Lake area is slightly higher, but the relative difference in the other three regions was not significant, relatively uniform spatial distribution; on the time course, in the October period, most water pollution severe. Overall, near the pool water to meet the general landscape water bodies of water or non-direct contact with the human body of water landscape recreational water standards; 4. Using the standard index method and fuzzy comprehensive evaluation method Qujiangchi evaluate the status of water quality. Evaluation results showed that: Qujiang pool water quality conditions for the class Ⅳ, major pollutants of TN. Compared with the standard index of fuzzy evaluation method is more suitable for near pool water quality assessment; 5. Recalls the generation and water quality model development and application, according to the actual situation Qujiangchi established WASP water quality model, the simulation results as: NH 3 -N, DO, TP, NO 3 -N The four indicators in the analog segment average relative error of the measured values ??were: 28.6%, 6.7% , 28.6%, 46.9%. In addition to NO 3 -N 40% outside the basic control within the scope of the requirements to achieve error. Show that the model can be applied to water quality management Qujiang pool, to be able to provide early warning and river water quality and safety of long-term planning to provide a scientific basis.
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