Study On The Landscape Pattern Evolution And Optimization Strategy In Tangyu Town Of Lantian County From 1993 To 2018

Under the background of the Outline 13 th Five-Year Plan for National Economic and Social Development in Lantian County,the spatial pattern system of “one belt,two cores and four plates” is put forward,which indicates that Tangyu Town will enter the stage of rapid urbanization development.At present,the development of the town is faced with the construction wave,the limitation of protection methods,and the deviation of market orientation.This has led to the accelerated landscape pattern evolution of Tangyu Town,which causes unavoidable damage to the eco-environment of the piedmont of north Qinling Mountains.The destruction eventually leads to a continuous decline in the quality of living environment.Aim at those matters,the current research mainly focuses on the regional spatial planning and description of landscape historical evolution,and lacks of systematic research on the refinement and application of the regional space-time law of landscape pattern evolution.In order to solve the problem of space-time law of landscape pattern evolution and landscape pattern optimization strategy in Tangyu Town of Lantian County,this paper clearly understands the evolution law and future development trend of Tangyu Town landscape pattern by the analysis of landscape pattern evolution.At the same time,based on the habitat quality index,different landscape patterns have impacted on the eco-environment of Tangyu Town.Finally,this paper analyzes existing problems of Tangyu Town landscape pattern from the macro,meso and micro levels,and puts forward guidelines and strategies for landscape pattern optimization under the corresponding scale.The main content of this study is divided into four parts.The first part is to analyze framework construction—the logic of landscape pattern evolution,trend prediction,ecoenvironmental impact and optimization strategy(Chapter Two).That is to analyze and summarize the refinement and application of landscape pattern evolution law at the level of landscape dynamic theory.The focus is on constructing the analytical framework of “landscape pattern evolution,trend prediction,eco-environmental impact,and optimization strategy”.Finally,based on the framework,the paper puts forward the research technical route from asking questions to analyzing problems and then solving problems,which prepares for the core part of the thesis.The second part is to refine and apply the law—the space-time law of landscape pattern evolution analysis and trend prediction of Tangyu Town(Chapter Three).Based on the literature and remote sensing image data of Tangyu Town of Lantian County from 1993-2018,this part quantitatively analyzes four aspects,which include the change of landscape pattern structure,the change direction of landscape elements,the change rate of landscape elements and the spatial change of landscape elements,and it obtains the evolution law of the landscape pattern of the town is obtained.Based on it,the CA-Markov prediction model is used to study the changing trend of landscape pattern in the future of the town between 2018 and 2028.Thirdly,it is the ecosystem status evaluation,which means the impact of landscape pattern evolution on the eco-environmental quality of Tangyu Town of Lantian County(Chapter Four).According to the calculation results of the eco-environmental quality index in the technical criterion for ecosystem status evaluation,that is to quantitatively evaluate the influence degree on the eco-environment under the condition of the historical period and future prediction of different landscape patterns in Tangyu Town.Finally,it is the landscape pattern optimization,which aims at the existing problems in Tangyu Town of Lantian County to put forward landscape pattern optimization strategy(Chapter Five).In view of the existing problems of Tangyu Town of landscape pattern,the corresponding optimization strategies are put forward.Based on the analysis of the law of landscape pattern evolution,this paper provides a new perspective and optimization strategy for solving the ecological problem of pattern fragmentation in Tangyu Town.There are two conclusions points.First,based on the theory of landscape dynamics,this paper systematically summarizes and restores the evolution of landscape pattern elements in Tangyu Town.The regional space-time law of landscape pattern evolution in Tangyu Town from 1993 to 2018 is extracted.Second,it also analyzes the stable relationship between Tangyu Town and eco-environmental health from many angles.These angles include the extraction of regional space-time law of landscape pattern evolution,the prediction of evolution trend(2018-2028),and then the environmental impact caused by landscape pattern evolution.In view of the existing problems of landscape pattern,the optimization strategies are put forward,the strategies are as follows—the macro level obeys the guidance of “Plan for Eco-environmental Protection in Xi’an Section of Great Qinling Mountains(2011-2030)” and “General Plan for Protection and Utilization in Xi’an Section of Great Qinling Mountains(2011-2030)”,so that the regional landscape pattern can be protected and utilized.At the meso level,construction control guidelines are formulated to strengthen the ecological protection and construction of landscape elements.Specific strategies are used to optimize the damaged eco-environment at the micro level,which plays an important guiding role in landscape ecological planning and construction of Tangyu Town.