Spatial Layout and Morphological Characteristics of the Waterfront Settlements in Northern Jiangxi

The stmctufe types of the waterfront settlements in the north of Jiangxi Province were analyzed. According to the relationship between location and water, die waterfront setdements in northern Jiangxi were classified into tiiree categofies. The structuial commonalities of the three kinds of waterfront settlements were cleady interpreted. On this basis and combined with the field research data and relevant data, the characteristics of the waterfront setdements in northern Jiangxi were summarized： treating water as the main skeleton, choosing location by the distance ￡com watet, magnetic effect and organic textute. The characteiistic space of watetfront settLemeiits found in the investigation process was classified and elaborated, which has certain reference significance for tiie space study of waterfront 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

综合运用GIS空间分析、地形起伏度和地形位指数等方法,分析了1975-2015年嵩县聚落演化的空间分异特征,进而运用因子分析、地理探测器和多元回归分析方法研究了影响因素及其变化。得出:(1) 40年间嵩县聚落数量减少了将近四分之一,而聚落总规模增加1.28倍,其数量减少量以1975-1995年阶段居多,规模扩张程度以1995-2015年阶段更为显著。(2)受山区地形限制聚落在空间上多沿道路和河流呈条带状分布,沿县城和乡镇中心呈团状分布,且随时间变化具有很强的路径依赖性;聚落空间分布呈现明显的低地、小地形起伏、平缓坡度和小地形位指向性,且随时间趋于向丘陵、平起伏和微起伏、坡度<6°、地形位指数<0.4地区布局;此外,聚落区位的南坡指向性和聚落规模空间分布的南坡、东南坡和西南坡指向性趋于加强。(3)聚落区位主要受地形、生产条件以及道路、乡镇中心、县城中心和工矿企业的辐射影响,但随时间变化,地形影响在减弱,而道路和乡镇中心的辐射影响在增强。(4)聚落规模空间分布受自然、社会和经济等方面因子的解释作用均较为显著并随时间有所变化,其中,地形的影响相对较大,社会经济因子中乡镇和县城中心的影响次之;但随城镇化进程的不断加快,县城中心的影响逐渐增强,而乡镇中心和地形的影响逐渐减弱。基于以上研究为山区聚落未来选址及规划布局提出几点建议。