Spatial differentiation and its influencing factors of settlements evolution in mountainous counties: A case study of Songxian county in western Henan province
DUAN Xiaowei1,2(),LI Xiaojian1,2()
1. School of Resources and Environment / Collaborative Innovation Center of Urban-Rural Coordinated Development in Henan Province, Henan University of Economics and law, Zhengzhou 450046, China 2. College of Environment & Planning / Key Research Institute of Yellow River Civilization and Sustainable Development, Henan University, Kaifeng 475004, Henan, China;
Combining GIS spatial analysis, topographic relief degree, terrain niche index and other methods, this paper analyzes the spatial differentiation of settlements evolution in Songxian, based on the settlement patches data of the county in 1975, 1995 and 2015. We then examine their influencing factors as well as their changes by using factor analysis, geographic detector and multiple regression analysis method. The results showed that: (1) The number of settlements decreased nearly a quarter while their scale increased more than 1.2 times over the past 40 years, however, the number during 1975-1995 reduced more than that from 1995 to 2015, while the scale expansion was more significant during the period 1995-2015. (2) Restricted by mountain topography, the settlements were mainly distributed along the main roads and rivers like ribbons, as well as distributed along the county seat and township sites forming massive texture, and their evolution followed strong path dependence; The settlements tended to be located on low land, smaller topography, gentle slope and small relief, or more settlements concentrated in the hilly region, flat and slightly undulating topography, and the areas where the slope degree is less than 6° and the terrain niche index less than 0.4. In addition, the south slope directivity of settlements' location and the south slope, southeast slope and southwest slope directivity of settlement scale's spatial distribution was gradually strengthened. (3) The location of settlements was mainly affected by topography, production conditions and the radiation effects of roads, town centers, township sites as well as proximity to industrial and mining enterprises. However, with the passage of time, the effects of topography were weakened while the impact of roads and township centers was gradually strengthened. (4) The spatial distribution of settlements scale was obviously affected by natural, social and economic factors, but the explanation effect of each factor changes over time; Among them, the influence of topography standed at the top, followed by the distance to township sites and county seat in social economic factors, but with the accelerating process of urbanization, the influence of the county center was gradually strengthened, while the influence of township sites and terrains was gradually weakened. Finally, based on the above research, some suggestions were proposed for future development and planning of the mountainous rural settlements.
. 山区县域聚落演化的空间分异特征及其影响因素——以豫西山地嵩县为例[J]. 地理研究,
2018, 37(12): 2459-2474.
. Spatial differentiation and its influencing factors of settlements evolution in mountainous counties: A case study of Songxian county in western Henan province[J]. GEOGRAPHICAL RESEARCH,
2018, 37(12): 2459-2474.
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