Study On The Driving Mechanism Of Landscape Pattern Evolution In The Luoyu River Basin At The Piedmont Of North Qinling Mountains Under The Action Of Fast And Slow Factors

Under the trend of urbanization,the impact of human activities on the evolution of landscape pattern is becoming more and more significant,and the natural environment on which humans depend has been operating at an overload.In recent years,Zhouzhi County has taken the Sha · Shahe Water Street project as a development priority,but the development of this project has seriously disrupted the ecological environment and landscape pattern evolution of Luoyu River Basin.They are many ecological problems.The ecosystem service function of Luoyu River Basin is low.The evolution of the landscape pattern of Luoyu River Basin is the epitome of landscape pattern evolution of the watershed in the piedmont of north Qinling Mountains.The formation of the river basin is the product of the interaction between nature and human beings,and its evolution will directly affect the ecological processes that occur in the river basin,thus affecting the ecological security of the river basin.However,there are few in-depth study of driving mechanism1 for landscape pattern evolution in the watershed in the piedmont of north Qinling Mountains,and the driving factor classifications are also very similar,mostly natural and human classification.Studying the driving mechanism of landscape pattern evolution plays an important role in cognizing the process of landscape evolution and landscape pattern optimization,and it is also of great significance for the control of river basin landscape pattern and the control of human activities.Therefore,this paper proposes a new classification of driving factors,that is fast factors and slow factors.Based on the Landscape pattern and ecological processes theory,a driver-process-pattern model is constructed,historical analysis,landscape pattern index analysis and land-use transition matrix are applied to analyze landscape pattern evolution process of Luoyu River Basin.At the same time,the driving mechanism of landscape pattern evolution in Luoyu River Basin is put forward to provide some help for the ecological planning of the piedmont of north Qinling Mountains.The main content of this research is divided into the following four parts:(1)The basic theory and analytical framework are proposed.It analyzes the "landscape evolution" and "landscape evolution mechanism ",combines the Landscape pattern and ecological processes theory,and applies the driver-process-pattern model and some methods and tools for studying landscape pattern evolution.The analytical framework and technical route of this paper are proposed(Chapter 2).(2)The second chapter analyzes landscape pattern evolution in Luoyu River Basin.It starts from the status quo of Luoyu River Basin.It combines relevant historical data and remote sensing data from 2000 to 2015 simultaneously.Firstly,the evolution of Luoyu River Basin is segmented in time and space.In the space,Luoyu River Basin is divided into mountain section,plain section and water street section.In terms of time,it is divided into formation stage,development stage and disturbance stage,and analyzes how the landscape pattern of Luoyu River Basin is formed and evolved in different stages.It uses ArcGIS analysis technology,land-use transition matrix and landscape pattern index analysis method to analyze landscape pattern evolution of Luoyu River Basin from 2000 to 2015(Chapter 3).(3)The fourth and fifth chapter analyze driving mechanism of landscape evolution in Luoyu River Basin.Based on the driving factors of fast and slow factors,the two chapters analyze how the driving factors act on the landscape pattern,and correspondingly drive the driving mechanism of landscape pattern evolution in Luoyu River Basin(Chapter 4,Chapter 5).(4)The sixth chapter compares the two driving factors.It mainly compares the analysis focus,disadvantages,applicable conditions and restriction requirements of the two driving factors(Chapter 6).The conclusion of this paper has the following three points:(1)Firstly,a analytical framework based on historical and remote sensing data analysis is proposed.(2)Secendly,it proposes the technical route of landscape pattern evolution analyzes under the classification method of fast factor and slow factor.(3)The driving mechanism of landscape pattern evolution driven by fast and slow factors is proposed respectively,which provides some reference significance and new attempts for future scholars who study landscape pattern evolution.