Reconstruction Of Agricultural Landscape Pattern In Lantian Section Of The Piedmont Of North Qinling Mountains From The Qing Dynasty To The Early Years Of The People’s Republic Of China

The Piedmont of north Qinling Mountains is an important area to ensure the ecological security of guanzhong.And it is also an epitome of the contradiction in China’s shallow mountains.The landscape evolution of the piedmont of north Qinling Mountains is a key to deeply understand and solve its practical problems.From the review of available research,how to transform the information in historical materials into visible historical spatial pattern is an urgent problem to be solved in the planning application of historical research through landscape reconstruction.The purpose of this study is to spatialize the historical information reasonably and transform the history into the spatial image,so as to provide the spatial discourse of historical land use for the study of how the future human beings adapt to the nature,transform the nature and make use of the nature.The main contents of the research are as follows:(1)The basic theory part,based on the extraction of multidisciplinary research methods such as Historical Geography,Geographic Information Science and Landscape Ecology.It integrates and forms a theoretical method base,and proposes a reconstruction research and analysis framework based on multi-source data(chapter 2).(2)The section of historical agricultural background of Lantian county is summarized.It includes of landform and geomorphology,river distribution,soil type and population situation of Lantian county,and the environmental change background of agricultural landscape in Lantian county is analyzed,including geological change,climate change,plant change and social change,so as to provide a basis for the reconstruction of agricultural landscape in Lantian county(chapter 3).(3)The section of landscape pattern reconstruction of Lantian from Qing dynasty to the early period of the founding of the People’s Republic of China.It rectifies a deviation of historical statistical documents of Lantian,extracts useful spatial information from historical maps,combines with remote sensing images to form spatial analysis based on different data sources,uses probability theory to reconstruct the spatial pattern of cultivated land in historical period(chapter 4).(4)The section of literature research and spatial reconstruction results test.It combines historical data and related research results to construct the historical process of agricultural development in Lantian county.And it based on the research results to carry out comparative verification of spatial reconstruction results(chapter 5).(5)The section of exploring the application of reconstruction research in planning and design.It mainly through four parts to discuss the extraction of regional spatial and temporal laws,the cognition of system state,the analysis of landscape evolution mechanism and the identification and optimization of key spaces(chapter 6).The section of research innovations and main conclusions:(1)It discusses the history of the piedmont of north Qinling Mountains landscape reconstruction model,includes "2-6-2"."2" is to specify volume reconstruction and qualitative reconstruction of two parts,"6" refers to the rules of source data collection,determine the number,space analysis,cultivated land suitability analysis,spatial analysis and result inspection six space module,"2" refers to the space is based on historical data analysis and reverse analysis based on remote sensing image space,the resulting landscape history reconstruction results.(2)This model is used to reconstruct the agricultural landscape space and process from the Qing dynasty to the early years of the founding of the People’s Republic of China in Lantian county.It is found that the agricultural landscape in Lantian county has gone through four stages in the past three hundred years.In the process of development,the cultivated land development is mainly in the circle-type mode,and the center of gravity does not move obviously.The agricultural landscape in the alluvial fan area is mainly concentrated in the fan margin area and the fan top is less distributed.The cultivated land space shows the development characteristics of centralization,fragmentation,recentralization and refragmentation.The degree of landscape fragmentation is higher in the Cold Period.(3)It summarizes the landscape change mechanism and apply the reconstruction results to the practice of planning and design.This study is called "Xiang Di" from the perspective of national territory spatial planning.And it is the basic theoretical research work closely related to the practical needs of landscape architecture in the new era.