Study On The Difference Of Urban Eco-economic System In Gansu Province Based On Niche Theory

After more than 40 years of development since China's reform and opening up,cities in various regions have developed vigorously and their comprehensive strength has been enhanced comprehensively.In the 21 st century,the cities' scale and number in China are increasing rapidly,and the process of urbanization is accelerating,which require higher requirements for the renewal and management of urban functions.On the basis of summarizing past practices,the report of the 19 th CPC national congress puts forward the "14 Points of adherence" that constitute the basic strategy for upholding and developing socialism with Chinese characteristics in the new era.Social life everywhere contains the relationship between social units and their living environment,which is very similar to the research contents of ecology.Therefore,relevant theories and methods of ecology can be used to study relevant contents of sociology,and this phenomenon has been reflected in the research of some scholars.Niche theory is the threshold value of each organism in the environment,and the concept of niche is constantly expanded and eventually introduced into the development of cities.Taking the development of 14 cities in Gansu province as the research object,this thesis collects and uses the data of urban economy,population,ecology,environment and infrastructure in Gansu province in2017.Basing on the following evidences,which contain the deep analysis on the basis of urban development and research status at home and abroad,the urban Eco-economic system,the theory of Ecological economics,the instruction of urban Ecological civilization theory,the Ecological niche theory,the Fractal method,the Entropy weight method,Thayer index measurement and Statistical analysis method,this thesis will study thedifferences of the urban Ecological system and Economic development of Gansu province.Firstly,the development of Urban ecological economy in Gansu province is introduced from the perspective of Ecological economics.Secondly,based on the theory of Urban niche and Ecological civilization,the Evaluation index system of urban Niche in Gansu province is constructed,and the difference of urban Eco-economic system in Gansu province is evaluated and analyzed.Thirdly,based on the Niche theory,the difference of urban Eco-economic system in Gansu province is further analyzed by using the urban Fractal theory and the Thayer index method,and suggestions will be put forward for the construction of urban Eco-economic system at various levels,so as to provide quantitative basis for the decision of related departments.