Research On Land Development Of Gaoyuanxi Watershed In Jiande,west Zhejiang(1700-1978)

Land use and land cover change(LUCC)is the main driving force for global environmental change.Due to the development of science and technology and its uneven development,global land use methods are constantly changing,and Causes land cover to show varying degrees of change in time and space.As a globally ecologically fragile region,mountain regions respond more strongly to human activities than other terrain regions.Changes in mountain environments have promoted the speed of global environmental changes and increased their complexity,which will have a major impact on global sustainable development.Over the past 300 years,under the influence of population,policies,technology and other factors,major changes have taken place in land use and land cover in the western Zhejiang mountainous region.This has not only changed the environment in the western Zhejiang mountainous region,but also the river basin as a whole.It will affect the environment and production in eastern Zhejiang and the Yangtze River Delta.Therefore,in order to clarify the historical process of the environmental change in the western Zhejiang mountainous region and its driving mechanism,this article comprehensively uses multidisciplinary research methods such as anthropology and historical geography.Study and analyze the natural and human driving forces of the two scales of the settlement,and reconstruct the historical process of land use change in mountain watersheds in the historical period.The full text is composed of two parts: introduction and body:Chapter One,the spatial and temporal evolution of land development in Gaoyuanxi Basin and its relationship with natural driving forces have been reconstructed over the past 300 years.Chapter Two,it mainly analyzes the evolution of the relationship between population driving forces and the development of river basin land in historical periods.Chapter Three,mainly explore the political driving factors that have an important impact on the land development of the basin.Chapter Four,it summarizes the development of farmland water conservancytechnology and its impact on land development in the Gaoyuanxi Basin in the past300 years.