Study On Construction Of Urban Wetland's Parks

The wet-land of cities in China is under great pressure and faces critical threatened.To solve the resource and environment problems in the process of urbanization,there is no shirking the responsibility on the part of governments of all levels.The wet-land park is one of the successful modes in protection,retrieval and reasonable use of wet-land in cities.The major function of wet-land parks is to be used as water regulation and purification pool to alleviate or partly resolve the water resource bottleneck problem.At the same time,it could contribute in creature variety protection,environmental education and feature tourism.It can also do our cities a good service as an important portion in the system of ecological landscape.However,the research has just start in the world to investigate the effect of wet-land parks' construction on urbanizing process and sustainable development,and the reaction of cities to wet-lands.It is noticeable that specialized research and literatures are scare in basic theories, concepts,characters,structures,functions,planning and construction principles,wet-lands retrieval and restoration technology and the mechanism of its influences on urbanizing process and sustainable development.In view of the significance of it both in theory and practice,this research discusses wet-land parks' planning and construction,as well as it's constrain mechanism on urbanizing process and sustainable development.This work is invaluable on urbanization, sustainable development of cities and wet-land parks' sound development.This research adopts methods of combinations of macroscopic and microscopic view,case and empirical approach,synthesis and extrapolation,field investigation and indoor explore, quantitative and qualitative analysis.This paper makes use of multi-disciplinary theories and means to study the relationship between the building of ecological infrastructure facilities and regional sustainable development.On the basis of studying fundamental issues of wet-land parks' construction in cities,this paper makes a comprehensive analysis by combining theories with cases and builds the theoretical footstone and provides decision reference for digging the natural advantages from wet-lands and enhancing all-around competitiveness of cities.This paper presents domestic and overseas situation and development trend of wet-lands, urban wet-lands and wet-land parks.It expounds that wet-land construction is a deep ecological thought's practice.The definition,structure and function of urban wet-lands and the wet-land park are represented.The generality and particularity between urban wet-land parks and general wet-land are studied.The distribution and types of China's urban wet-lands are introduced.This paper summarizes the principles and contents of wet-land parks' planning and a new idea called 3 (targets)-4(functions)-7(projects) comes up.The procedure and technology of urban wet-lands retrieval and restoration are generalized.The relationship between city wet lands and urbanization, and the influence and function of cities' sustainable development are discussed.The financing, construction,operation mode,policy insurance and benefit compensation are discussed.This paper develops the BOOST mode of urban wet-land parks' construction.On the foundation of above research,this paper,taking Qinhuai River of Jiangning stretch,Nanjing and its peripheral wet-lands as the research subject,explores the effects of establishing a wet-land park in Jiangning on regional sustainable development.The feasibility of the Qinhuai River wet-land park is demonstrated.This article provides theoretical basis and construction lead for urban wet-land parks' planning.The strategies of this research are as following:1.According to environment issues in urbanization,especially water resources problem,the author presented that retrieving wet-lands or establishing wet-land parks are effective step to solve them.The relation between wet-land park's construction and regional sustainable development is studied.2.This paper summarized fundamental theories such as wet-land Park's concept,definition, diagnostic structure and functional subareas.The background,present condition and development trend of wet-land retrieval and wet-land park construction over the world are also analyzed.Then, on the basis of work mentioned above,the author studied the new ideas and new technologies for wet-land Park planning,analyzed regular technologies of wet-land retrieval and restoration,and inducted their process.3.On the basis of the empirical research on the resources and environment problems raised from the urbanization of Jiangning,Nanjing,this paper took Qinhual River wet-land park planning as an example,made an intensive study of what kind of wet-land parks should be established? How to build them? And what effects those parks could make on the regional sustainable development?4.on the basis of above process,the general laws of urban ecological infrastructure facilities' effects on urbanization and regional sustainable development are generalized.Main conclusions as follows:1.The domestic and overseas wet-land park's present condition and development trend are analyzed and generalized.It is a successful mode of wet-land protection and reasonable utilization to establish wet-land parks.This mode is getting extension gradually in both developing and developed countries. Wet-land park construction has gained more and more concern and support from government and society.Its planning has already become an important part of city planning,developing from small-scale to large-scale,from mono-function to multi-function.With the premise of protecting wet-lands,the parks aim at more functions like education,training,tourism and landscape.The investors and financing channels are widened.There is a considerable progress of wet-land park construction in China recent years with three evidences.First of all,despite of its delayed start-up,the wet-land park developed fast.There are 12 national wet-land parks have been successively established with the authorization of State Forestry Administration and Ministry of Construction.Moreover,government paid great attention on this field,enacted relevant laws and regulations,laid the foundation and created opportunities for the healthy grow of this industry.Last but not least,investments from enterprises largely helped promote the development of wet-land park constructions.However,there are a lot of problems in China's development of city wet-lands.First,the reckless construction is lacking in feasibility study,which leaves economic,social and ecological risk and danger to the project construction;Second,the construction of wet-land parks is in its initial stage both theoretically and practically.The lack of systematic and maturing technology necessarily brings about the risk of success;third,China is in short of the maturing policies and systems to encourage and attract social investment to the buildup of wet-land parks;Fourth,the profit of the buildup of wet-land parks needs to be balanced;fifth,the construction and operation of wet-land parks require higher efficiency and more appropriate managing system.2.The definition and principle are put forward systematically.The definition of the wet-land park in this research paper is the site based on its advantages of science and art,taking advantage of natural or artificial wet-lands,designing,constructing and managing according to the structure,features,landscape and ecology of the genuine natural wet-land system with scientific and cultural values.It aims at displaying the ecological system and the various creatures of wet-lands to people by means of education,training and tourism.The special theme areas which consist of various wet-land landscapes,plentiful wet-land creatures, characteristic wet-land entertainment,wet-land commodities,wet-land customs and wet land ecological archeological model will be healthy places of leisure and travel for people city residents and the youth.The definition includes six basic principles:complement,effectiveness,research and education,culture,development of local community and management.3.The background,conception regulation and principle of the deep ecological thought is systematically analyzed and studied in theory,holding that investing to build wet-land parks in cities is a social practice of the deep ecological thought.4.Basic issues about city wet-land park construction are raised.They are scientific issues of city wet-land study;basic theories of wet-land retrieval,such as self-design&design theory,succession theory,in-break theory,river theory,flood pulse theory, marginal effect theory,and middling disturb theory,the planning,design,investment,construction and management of city wet-land parks.5.This paper presented the "3 loops,4 zones,7 levels" concept for wet-land park construction and planning.The author holds the idea that wet-land planning has to be separated from that of related fields in concept.They are "protection first" in conservation area,"parks or landscape site" for scenery exploitation,city gardens' planning with an artificial landscape base and big cities' land-use program.Upon that,the author presented the new concept of "3 loops,4 zones,7 levels" for city wet-land park planning.Three loops G,E and F represent the people's three major cognitions on wet-land,i.e.improves utilization and protection reparative.Interloped four zones represent the basic function subfield of wet-land park planning.At the mean time,ideal wet-land park has seven function modules and all the planed projects could be developed around them.6.The principles,key technology and process of wet-land park retrieval and restoration are systemically summarized.7.Urban wet-land park classification in China is set out tentatively.The author discussed the classification of Urban wet-land parks under different standards.a).By the utilizing types of wet-land;b).By the degree of human being's interference;c).By the origin and function of the parks.8.This paper formulated municipal ecological infrastructure's contributions and effects on the sustainable urbanization through the study of Qinhuai River wet-land park and its potential influence on the sustainable development of Jiangning.a).This project will contribute 10%to the economic growth rate annually when it is done. Also it will offer 3,900～7,400 positions.The ecological value belong to this wet-land park will make the green GDP and green GDP growth rate raise to 17.19 billion RMB and 26.7% respectively,b).The establishment of Qinhuai River wet-land park will dramatically improve the environment of peripheral region.The total sum of land value hoisting will reach 10.23 billion RMB.c).The best developments scale of the park is 800 hm~2,can produce 780,000,000 RMB net profit for sustainable development。9.This paper designed the BOOST mode(Build-Own-Operate-Subsidize-Transfer) for wet-land park investment,management and administration,as well as the corresponded good policies.This mode reflects the creative idea that social,ecological and public-benefit projects should be operated by artificial person of enterprises following the guidance of government with the whole society's involvement.It has an important push function to the wet-land park construction which is flourishing now.