| In order to better understand country road’s characteristics of distribution anderosion for low hilly region of Yin Shan Mountains’ northern slope, this paper, basedon low hilly region KuLunTu town basin as research region, discuss each grade’sdistribution law in this basin with help of the GIS spatial analysis method. It showsthat the road lying in low hilly region of Yin Shan Mountains’ northern slope may bedivided into three grades：the first grade road, is asphalt road going through allmotor-driven cars and soil&stone road, and its width is greater than5meters; thesecond grade road, is soil&stone road going through country to country and itswidth is between2.5meters and5meters, less than the first grade; the third graderoad, is a road formed by people’s motive with special need for manufacture, and itswidth is less than2.5meters, most is road for cultivation.According to analysis, we can know that:(1)Seeing from basin road’s quantitycharacteristics, each grade’s total length increase with the grade, and accumulativetotal length appear linear interrelation with road grade, and average length anddensity of road appear decrease with increase of grade.(2) Seeing from basin road’sstructural characteristics, including the grade characteristics and fluctuatecharacteristics. First of all, seeing from grade of characteristics, the result of researchshow average branch of eastern road is bigger than western regions, and easternregion’s topography is abrupt slope, low grade road must take high grade road asmain line; western topography is comparatively flat, the distribution of road iscomparatively freedom. Secondly, seeing from fluctuate characteristics, the first andthe second grade fluctuate little bigger, the third grade road in eastern regionfluctuate much bigger comparing with the first and the second grade road.（3）Analyzing the structural characteristics of the watershed road,we know that the roadin river basin will be bending with the influence of the terrain. Meanwhile, generallyspeaking the bending degree in climbing road will be significantly higher than theroad along the ditch. In this river basin, most of the first level roads and the secondlevel roads located in the both sides of the Ditch.（4）Analyzing the Relationship between layout of the road and distribution of the settlement, we Set up a bufferoutside the Settlements200Meters, and demographic the Length change of the roadin different buffer. Conclusions are as followed: Regardless of the eastern andwestern regions, in200Meters away from the settlements, the first and second levelsroads have the longest length, however, In400to600Meters away from thesettlements; the third level roads have the longest length. This shows that thedistribution of the settlements affected the total length of all roads. From the profileslope of the curve, we can conclude that farmers choose the scope within1400meters as the main area for production and living.Through site visits, summarizes and analyzes the erosion features and erosionprocesses of the road.（1）erosion processes: Analyzed the erosion processes of theroad whose road surface is higher than the Slope of road. Analyzed the erosionprocesses of the road whose road surface is lower than the Slope of road.（2）erosionfeatures: the road conditions and gully development in CuLunTu river basin affecteach other; generality in road erosion; the performance in Road erosion is moreconcentrated in time; the influence of Slope and road shelter in road erosion. Thissection not only provided relevant theoretical guidance for local road constructionand maintenance in practice, but also strengthened and... |
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