The Study On Spatial Patternsevolution And Driving Force Of Rural Settlements In Xiantao

The evolution of space pattern of rural residents is a location selection pr ocess that is under the influence of natural conditions, location accessibility an d conditions of social economy. Point at the current rural per capita land is to o large, the phenomenon of "hollow village" outstanding etc. Rural residential space pattern evolution has become the important aspect of the intensive land use, urban and rural integration and improvement of the rural ecological enviro nment.Based on the2000and2010in Xiantao land use database, Assisted by A RCGIS10.0software to study the evolution of space pattern of rural residents i n Xiantao:First use of the adjacent elements analysis, density analysis and Ian dscape analysis to study spatial patterns from2000to2010on Xiantao county and different township level, different agricultural population density areas. Sec ondly, use of buffer analysis, factor analysis combined with the distance analys is to try to reveal spatial patterns evolution on Xiantao rural residents, the con elusions of the study are as follows:(1) The characteristics of different regional spatial distribution of rural settlement from2000to2010in Xiantao.At the county level, From the dentisy analysis we could see that a part of high density rural residential area has evolved into second high density area, a part of second high density and low density area has disappeared. From adjacent elements analysis we also could see that Xiantao rural residential space pattern belongs to the spatial centralization mode, and the space agglomeration degree of rural residential in2010is higher than2000.At the township level, From the number and scale, majority towns have rural residential area and percentage reduction, while the average scale increased and the differences of scale between the residents more obvious. From the residents shape, the rural residents shape tends to rule. From the residential distribution characteristics, most of rural residential spatial aggregation has a weakening trend.At the different levels of agricultural population density area, the high density rural residential scale and scale difference tends to be growing and residential edge twists is also growing, while the distribution tend to cluster. Medium density rural residents trend to fragmentation and small scale, the patch shape became regular and has a local cluster distribution trend. Low density rural residents tend to scale and the scale difference is smaller, while residential edge tortuous degree increasing and distribution trend to slowly cluster.(2) The study on driving force of rural residential space patterns evolutionFor the river, the number and density of rural residents has a small increa sed and then gradually decreased when away from the river. But the residential area, landscape proportion and average scale is in reduced. For the different g rade road, near the highway distribution of minimum number and medium seal e residents tend to local cluster. Near the national and provincial road, distribut ion of moderate number of largest rural settlements dispersed distribution. Alon g the county road there is the largest number, smallest scale rural settlements dispersed distribution. When we see the road net as a whole, The more close t o the road, rural residential area, number, scale is larger, residential edge tortu osity and density is also greater. For the urban environment, there are obvious distribution characteristic within the range of4000m. Within the range of2000m, the landscape of rural residential is not prominent. But in the range of2000-4000m, the number, scale, density and scale differences are larger, when awa y from the center of the township of4000-7000m, these spatial distribution ch aracteristics is increasingly weakening, and the distribution characteristics in2010are more significant in2000.For the arable land, Xiantao returning arable land to forest, grassland, Lak e and agricultural structure from low value farmland transfer to high value fish pond or garden has led to the decrease of farmland. The strictest protection p olicy, Center Village Building, land consolidation has effectively restricted the disorderly expansion of rural settlements.Last, for the social and economic envoriments, the driving force of spatial pattern of evolution in2000to2010in Xiantao is two main aspects:rural economic development level and Urbanization level.