Study On The Spatial Pattern Of The Settlement Of The Plateau Lakes And Its Influencing Factors

With the further development of the western development and the basic strategy of sustainable development,the social and economic development of the western region of our country has been developing rapidly,which has led to the construction of cities and villages in the western region.The development of urban and rural settlements has been paid more and more attention.The study of spational pattern concerns the exploitation and construction of the settlements which are places where people relay on to live and produce.Especially in the southwest region,mainly in the plateau and mountainous areas,the particularity of the geographical conditions increased the difficulty of the development and construction of the southwest region,and the plateau lake area not only has the characteristics of plateau mountain and shows the environment sensitive,low degree of the resources availability and the characteristics of week ecological restoration,resulting the great challenges faced by the development of the regional lakes around the plateau and rural areas.In this paper,Dali City is used as the research case to carry out the study of the landscape pattern and spatial distribution of the settlement.According to the spatial pattern,the distance from the Erhai Lake is divided according to the spatial pattern,and the influencing factors of the settlement pattern are selected according to the spatial pattern.The Factors Influencing the Spatial Pattern of Settlement in Distance Segment Scale.Get the following conclusions:(1)landscape pattern study① regional landscape pattern study:The distribution of the number of settlements is more concentrated in the area near Erhai Lake.As the distance from Erhai Lake increases,the settlement becomes relatively sparse.The spatial indices of CA,NP,MPS,LPI and LSI decrease with the increase of distance from Erhai Lake,and the other landscape indices are in the distance from Erhai Lake There is not much change in the change.②A Study on the Characteristics of Settlement Landscape:In view of the delineation of urban settlements and rural settlements,rural settlements constitute the main settlement landscape,the spatial distribution of rural settlements is more intensive,and the spatial distribution of urban settlements is more sparse,the degree of urban agglomeration is higher,The shape of the patch is closer to the shape of the urban settlement than the straight drawing of a square-shaped pattern similar to that of a rectangular square,and the shape of the urban plaque is closer to the curve with a circular or elliptical pattern.(2)Research on Spatial Distribution①the distribution of the overall spatial distribution of the settlement:the distribution of the number of settlements from the Erhai Lake near the more concentrated in the area,with the distance from the Erhai Lake increased,the relative becomes thin sparse;settlement landscape index in the spatial distribution of the Erhai Lake The differences of CA,NP,MPS,LPI and LSI have decreased with the increase of distance from Erhai Lake,and the rest of the landscape index does not change much in the distance from Erhai Lake.② settlement of the internal environment of space distribution:The population area of the settlements,the population,the economic income,and the number of ethnic minorities in the population of the population showed a distance from the Erhai Lake near the range of large values with the distance from the Erhai Lake increased the value of the gradual decrease in a small part of the small Fluctuating,but the overall value is decreasing.③ distance from the Erhai distance from the scope of the circle within the cluster according to the results,a total of four areas:Close lake area(0-4km),the distance from the lake(4-14km),the long distance lake(14-18km),the remote lake(18-22km)(3)influencing factors①The selection of influencing factors:Considering the characteristics of the landscape characteristics and spatial distribution,the elevation,slope,topography,river,urban and road factors affect the spatial pattern of settlement,which is the influencing factor to be analyzed.②From the global county scale,the three factors such as terrain fluctuation degree,slope degree and distance from the central town have great influence on the pattern of settlement space.The influence degree of terrain fluctuation degree,elevation,river and road on the spatial pattern of settlement is general,The effect of slope factors on the pattern of settlement in the county is weak.③ From the different areas of Erhai Lake,the spatial pattern of settlement is mainly affected by slope,distance from the center town and road.The spatial pattern of the settlement in the middle distance lake area is mainly affected by terrain,slope,river and distance from the central town The spatial pattern of the settlement in the long distance lake area is mainly affected by the terrain and the influence of the river.The spatial pattern of the settlement in the remote area is only affected by the terrain.