首页|青藏高寒区隆子县居民点空间分布及其与地形地貌关系

青藏高寒区隆子县居民点空间分布及其与地形地貌关系

Spatial distribution of residential area and its relationship with topography and landforms in Longzi County,Qinghai-Tibet alpine region

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  • 维普
  • 万方数据
以青藏高寒区隆子县为研究对象,利用遥感高清影像,采取目视解译结合实地考察的方式,获取隆子县居民点数据,选取高程、坡度、坡向、地形起伏度、坡向变率、地面粗糙度、高程变异系数和地貌类型 8个因子,运用空间热点探测分析居民点规模分布"冷热点",利用分布指数和信息熵探讨了隆子县居民点分布格局,通过变维分形揭示了居民点分布与地形地貌的关系.结果表明:①隆子县居民点分布以集群型小型居民点为主要特征,规模分布"冷热点"分异明显,热点主要分布在隆子镇,冷点主要分布在雪萨乡;②居民点在其分布的优势地形位上,其有序程度也相对较高.居民点在高程 3500～4000 m,坡度小于 2°,北坡坡向,地形起伏度 15m以下,坡向变率 5°～10°,地面粗糙度小于 1.01、高程变异系数为 0.001～0.005 的地形位和砂砾质冲洪积平原地貌上的有序性最强,这些地形位大多是居民点分布的优势地形位;③地形地貌对隆子县居民点分布及其发展影响的降序排序依次为地貌类型＞高程＞坡度＞高程变异系数＞坡向变率＞坡向＞地形起伏度＞地面粗糙度.
Longzi County in the Qinghai-Tibet alpine region was chosen as the study area.In this paper,the residential area data of Longzi County were obtained by combining fieldwork with the high-definition remote sensing images visually interpreted.The eight topographic and geomorphological factors were selected,namely,elevations,slopes,slope aspects,terrain undulations,slope aspect change rates,ground roughness,elevation variation coefficients and landform types.And then the cold/hot spots of residential area distribution in Longzi County were assessed by using the spatial hot spot detection.Furthermore,the distribution pattern of residential areas in Longzi County was explored by using distribution index and information entropy.Finally,the relationship between residential area distribution and topographic and geomorphological factors was explored by using variable dimensional fractal.The results show that:①The distribution of residential areas of Longzi County is mainly small cluster settlements,and shows obvious different types of"hot and cold spots".And the hot spots are mainly distributed in Longzi Town,while the cold spots are mainly distributed in Xuesa Town.②Those residential areas in the advantaged topographic locations are relatively well ordered.The strongest orderliness is found in the residential areas on the gravelly alluvial plain and in those with elevations of 3500-4000 m,slopes of less than 2°,northern aspects,terrain undulations of less than 15 m,5°-10°slope fluctuations,0.001-0.005 variation coefficient of elevation,less than 1.01 roughness of ground.③In Longzi County,the topography and geomorphology shows a descending influence on the distribution of residential areas in an order of landforms＞elevations＞slopes＞elevation variation coefficients＞slope aspect change rates＞slope aspects＞terrain undulations＞ground roughness.

residential area distributiontopography and landformsvariable dimension fractalLongzi County

吕丽花、陈俊旭、胡智文、赵志芳、邵毕涛、马少杰、彭钰博

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云南大学地球科学学院,云南昆明 650500

中国电建集团昆明勘测设计研究院有限公司,云南昆明 650051

云南省地矿测绘院有限公司,云南 昆明 650218

居民点分布 地形地貌 变维分形 隆子县

中国地质调查局项目云南省研究生优质课程立项建设项目云南省教育厅科学研究基金云南大学研究生科研创新基金云南大学研究生科研创新基金云南大学研究生科研创新基金

DD20221824SJYZKC202111102023Y01932021Y351KC-22223108KC-22222914

2024

10.7540/j.ynu.20230059

云南大学学报(自然科学版)
云南大学

云南大学学报(自然科学版)

CSTPCD北大核心
影响因子：0.663
ISSN：0258-7971
年,卷(期)：2024.46(1)
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