Study On The Characteristics Of Danxia Landform And The Factors Of Formation In The Luanping Basin,Hebei Province

The research and development of the Danxia landform originated in China and has received extensive attention from scholars at home and abroad for more than 80 years.This paper selects the Danxia landform of Hebei Luanping Basin as the research object.Based on the research progress of Danxia landforms at home and abroad,the paper uses the combination of SPOT6 satellite imagery with high spatial resolution,GIS technology and field investigation..Based on the characteristics of remote sensing images of Danxia landforms in the study area,Danxia landform features,classification,development conditions and landscape factors,the following major achievements and understandings have been obtained:(1)Summarizes the regional geology of the study area and recognizes that the Danxia landform is a set of glutenite that is dominated by the Middle Jurassic Middle Jurassic Tuchengzi formation.The strata are controlled by the NE-to-fault structure,and the strata are cut clearly.The strata are formed in a hot,arid-semi-arid environment.The sedimentary facies belong to the alluvial fan-fan delta-shore-shallow lake phase transition type.(2)Based on the SPOT6 satellite data and Google Earth image data,combined with the Danxia landform classification research system,the Danxia landform landscape types are classified into 8 types on remote sensing images,and a high resolution remote sensing image solution of the Danxia landform landscape type in the Luanping Basin is established.Translated logo.According to field survey results,Danxia landform landscape types were divided into 8 types of positive geomorphic landscapes and 4 negative geomorphological landscape types from the standpoint of monomer morphology.(3)Comprehensive analysis of the development conditions of the Danxia landform in the Luanping basin shows that the formation of the Danxia landform is the result of the joint action of internal and external dynamic geology,and the mechanism of the formation of the Danxia landform has been established.That is,the red bed provides the material basis,and the fracture structure and joints provide the source of internal power for the formation transformation.Under the action of external dynamic geology(water erosion,weathering,gravity collapse,etc.),the magnificent Danxia landform landscape is formed.(4)The factors that have a significant correlation with Danxia landform and control are taken,including five important factors including red stratum,structure,water flow,weathering,and topography.Danxia landform scenery landscape factors research: a.Red rock Sex,weathering resistance,stratigraphic occurrence,thickness,type of cement,etc.play a fundamental role in the formation of the Danxia landform;b.Fracture structure and joints play a role in controlling and cutting the strata;c.Flowing water in the Danxia landform There are certain regularities in the transformation of macroscopic and microscopic landscapes;d.Weathering changes the shape and volume of formation rock masses;e.Topographic factors including elevation,slope and undulation are important parameters reflecting the steepness of landforms.The greater the value of slopes and undulations,the easier it is to form a steep Danxia landscape.Through the research results of the genesis,characteristics and classification of the Danxia landforms in the Luanping Basin,this area will have important guiding significance for the future scientific research and tourism development planning of Danxia landforms.The study of landscape factors can provide a reference for geomorphological studies in similar regions.