Study On The Landscape Pattern And Driving Mechanism Of Rural Settlements In Kuitun River Basin Based On Optimal Analysis Granularity

Since the 18th national congress of the communist party of China(CPC),the state has attached great importance to the work of"agriculture,rural areas and farmers".In this context,it is a very important to reveal the landscape pattern characteristics of oasis rural settlements driven by various factors and give play to xinjiang's unique geographical advantages as the core area of the"silk road economic belt".This paper takes the Kuiduwu area in the Kuitun River Basin as an example.Based on Xinjiang's 2016 land use data,mathematical statistics,such as the landscape pattern index method,GIS spatial analysis and Logistic regression model,are used to analyze the optimum particle size under the effect of the spatial distribution of rural settlement landscape pattern direction,density,size and morphology.And the geographical spatial elements and the social economic factors affecting settlement landscape pattern are analyzed,the optimization advices are also put forward.Research shows that:(1)The optimal analysis granularity of rural settlement landscape research in kuitun river basin is 110 m.According to the effect analysis of landscape pattern index changing with grain size,the overall appropriate grain size range is(30,110),and the appropriate grain size range is medium to large,so the optimal grain size is determined to be 110 m.(2)Based on the research on the overall landscape pattern characteristics of kuitun river basin with the optimal analysis granularity,it is found that the rural settlement landscape is closely related to the adjacent farmland and grassland landscape in space,and the rural settlement landscape accounts for a large number of patches but a small area.From the perspective of spatial distribution,the degree of spatial adjacency between landscape types is relatively high.From the perspective of landscape morphology,the morphology of each landscape is relatively regular and the shape of patches is relatively simple.(3)Analyzing the spatial distribution and direction of rural settlement landscape in the Kuitun River Basin,it is found that the spatial distribution direction of rural settlement landscape is consistent with the distribution direction of kuiduwu administrative district,showing the trend of northwest to southeast.The spatial distribution of the settlements is remarkable,and the spatial distribution of the density distribution is obvious.It shows obvious“multi-core”and several core areas of contiguous distribution.density of core are respectively township head,Jiahezixiang-eighty-four township-the west lake and river gul figure town,highest density area is 4.5/km~2.The density sub-core area is generally the center of the township regimental field,and the density distribution of rural settlements is basically consistent with the population distribution.(4)Analyzing the spatial scale of rural settlement landscape in the Kuitun River Basin,it is found that most rural settlement landscapes are mainly small settlements,with significant differences in settlement scale and grade.According to the calculation results of global spatial autocorrelation Moran's I index and global spatial clustering test getis-ord General G index,the rural settlement landscape presents a small cluster in spatial distribution.From the perspective of the cold hot spot analysis results,the rural settlement landscape of large-scale"hot spots"area are mainly distributed in the northern,western and eastern corps herd company,small-scale"cold spots"area are mainly distributed in the central place of towns villages.As a whole,the kuitun river basin of the rural settlement landscape scale in space presented the"around tall,among low"space differentiation characteristics;By comparing and analyzing the spatial differences of scale and density,it is found that there is a significant negative correlation between them,that is,there is a high-density--small-scale,low-density--large-scale distribution rule.(5)Analysis of the spatial form of rural settlements in the Kuitun River Basin,it is found that the overall morphological complexity of rural settlement landscape is relatively low,the fluctuation is small,and the shape is relatively neat.Moreover,the morphological complexity of rural settlement near the higher-level roads is higher than that of the lower-level roads.(6)Geographical space elements and social and economic elements have an important impact on the landscape pattern of rural settlements.Spatial distribution of rural settlement landscape in the Kuitun River Basin has low altitude,low,near river,close to the cultivated land,and near road directivity.by Logistic regression model analysis found that the spatial distribution elements of rural settlements at different levels,the influence of the size,shape,distance from the center of city recently,the distance from the center of town recently,is apart from the major rivers in the recent distance are the main factors influencing the settlement space distribution;Tillage radius,elevation and slope are the main factors affecting settlement scale differentiation.The distance from the nearest national highway,expressway and county road is the main factor affecting the settlement pattern differentiation.Moreover,socialandeconomicdevelopmentandindustrializationlevel,transportation and other infrastructure construction,residents'living standards,urbanization,policy input and other aspects also have an important impact on the rural settlement landscape pattern.(7)In order to promote the landscape layout of rural settlements to develop in a more optimized and reasonable direction,it is necessary to optimize the industrial layout and give full play to the linkage and coordinated development of their respective industrial advantages;the development of small towns should be further strengthened,the orderly transfer of agricultural population should be promoted,and integrated urban and rural development through urbanization in local and nearby areas should be achieved.Strengthening the planning and control of villages and towns and making rational layout and beautify living Spaces are nice measures.