The Study Of Evaluation Method-Comprehensive Indexes About City Landscape Water

With the rapid development of the city building, the residence construction goes like a raging fire. To meet the requirements of the residents, the real estate agent development aims to construct the buildings which ensure both green and ecology. Therefore, in the many landmark constructions, man-made lakes, rivers and landscape ponds flourish. On the other hand, however, the deterioration of the water quality throws bad effect on people's life. The main reason lies in that the designers are in hot pursuit of the grandness of appearance while paying little attention to the compatibility of the city ecological system.This paper applies the Fuzziness Mathematics to assess the city landscape water quality in the following four aspects, namely, the ecological, the landscape effect, social and economy condition. The ecological evaluation includes pollution and eutrophication evaluation. The landscape effect evaluation includes the landscape arrangement evaluation, the quality evaluation of physics and chemistry and the location evaluation. The social evaluation refers to the viewing evaluation. And economy evaluation includes the benefit and rarity evaluation.And these evaluation are made by means of several detailed factors. The procedures almost go in a similar way, that is, make certain the factors which effect the quality of the water, educe the collection of the factors, ascertain the degree of the subject, obtain the data, account the scale of authority and check up the precision.In this paper, four city landscape water of shanghai are chosen to do the research, from which we can see that of the four, three are qualified, one being rather bad. The qualifying rate is 15%. Thus the general picture of the landscape water quality in shanghai is quite all right.The pollution is not serious. Most part of water reaches the ground water standard of level-2. But the level of nutrition appears too high, with two of them reach the eutrophication, and one even reaches the highest level of nutrition. As for the landscape arrangement, the three of them being second to best, one just reaching the qualifying level.As for the quality of physics and chemistry, two are second to best, one reaching the qualifying level and another rather bad. As for the benefit and rarity, all are second to best. In addition, the requirement from the public about the landscape arrangement is that: the water level should be comparatively low so that they are easier to approach the water. The research also shows that some landscape water are qualified in some certain aspects, but unqualified in others.Yang Meng(Environmental Engineering)Supervised by Associate Prof. Liu Zhenhong...