The Study On Establishment States Of Ecological Garden In Baosteel And Comprehensive Evaluation

As the important constituent of the city green system,the factory (or industrial district) green is the important influence factor of the city's ecological environment and appearance. Be guiding of the ecological balance theory, insisting the humanist principle, the ecological garden-factory constructs the plant communities with multi-levelly,multi-structures and multi-function,building clean,beautiful,healthy and civilization green factory,with restorationing ecosystem and protecting biodiversity. So,the ecological garden-factory ,as the gradual goal of ecological factory, promots harmonious coexistence of human and nature.Its concepts areincreasing payed more attention.Many large industry successively constructing ecological garden-factory.Taking the ecological garden in Baosteel as the research object, This paper analyzes its present situation and achievements,through the field investigation. Then, attempting to constructing Evaluation System of ecological garden-factory Comprehensive index,the paper evaluats the Comprehensive index of ecological garden-factory in Baosteel. The results in the paper as follows:Plant community,as the main body of Eco-garden,play the role of essential unit in exerting servicing function. According to the geography and the industrial layout,Baosteel reasonably constructs the many kinds of different functions type and the forest type Plant community,which has 5 phsiognomy types, 12 life-form stypes, 40 constructive specie types and 89 dominant specie types.At the same time, the unique climatic conditions and the diverse habitats has provided the survival opportunity for natural herb, which can be divided into 11 types, with Twinspan (Two-Way Indicator Species Analysis) method.The biodiversity as the foundation and important content of eco-garden, is a key target in weighing its perfect and Stable or not.By the investigation of eco-garden in Baosteel,there are 403 vascular plants, belonging to 270 genera and 104 families, 18r plants, belonging to 14genera and 7families.There are 218 native species, belonging to 154 genera and 57 families, with 43 woody plant, occuping 26.60% of native woody species in Shanghai area,which is insufficient in community.The mega-phanerophytes occupy superiorly, especially deciduous mega-phanerophytes is demonstrate in the life-form spectrum,which conforms to the subtropic evergreen broad-leaved forest, but with the garden landscape characteristic.Also,there are rich wild animal resources, 18 mammalias, 45 birds, 12 crawlings and amphibious. Specially, along the Yangtse river green spaces in baosteel survive many aquatic and winter birds,which has the strong attraction to the birds,approaching to the relative better environment areas in shanghai.The determines results indicated the industry layout intensity and air environment has the inverse ratio ,the air environment in low n is better than region in high industrial intensity,which air environment urgently needs to be improvemented. The quantity of edaphon's and the soil environment condition present the similar phenomenon. And through the Beck index benthos biology, the river system appears the varying degree pollution.Based on the connotation of ecological garden and the characteristic of factory, unifies the Practiceing of ecological garden in Baosteel,the paper has constructed Evaluation System of ecological garden-factory Comprehensive index,by 6 two level indices of Stable degree, aesthetic degree, natural degree, healthy degree,ecomomical degree and Cognition degree,and 17 basic indices.The weightinessof every index is established by using the methods of Stratified analysis .Then, using the Fuzzy Assessmet method to estimate the Comprehensive index of ecological garden in Baosteel, the result shows that baosteel gets the grade of good,with the scoring of 93.74,which indicates that eco-garden in Baosteel places in higher level,on totally.But some of index signs,such as Accessibility of green space, percents of native species,etc.are not enough ideal. Some suggestions about construnting the Approaching nature woodland and waterscape, managementing and monitoring the green space with ecological mothed,in the paper.