TANG Qian,LI Xiaokun,ZHONG Boxing,et al.GIS-Based Research on the Evaluation of Spatial Distribution of Villages and Human Settlements Environment Suitability in Chengkou County of Chongqing[J].Research of Soil and Water Conservation,2019,26(02):305-311.
基于GIS的重庆城口县村落空间分布特征及人居环境适宜性评价研究
- Title:
- GIS-Based Research on the Evaluation of Spatial Distribution of Villages and Human Settlements Environment Suitability in Chengkou County of Chongqing
- Keywords:
- village; spatial distribution; village human settlement environment; suitability; Chengkou County
- 分类号:
- C912.82
- 摘要:
- 以重庆城口县为例，探索了秦巴山连片特困区村落空间分布特征及人居环境适宜性，为落后山区村落布局规划与扶贫脱困提供科学依据。运用核密度分析和空间热点探测分析等方法，研究了城口县村落空间分布特征；基于地形起伏度、地被指数、温湿指数和水文指数构建人居环境指数模型，评价了城口县村落人居环境适宜状况。结果表明：（1）村落高密集区主要分布在西部、南部和中部地区，村落稀疏区主要分布在东部和北部地区，村落密度由西向东、由南向北降低，村落分布整体呈带状延伸、片状聚集和“孤岛”零星分布的聚散特征；（2）村落数量分布与地形关系密切，随地形因子分级梯度增大而降低；（3）村落人居环境划分为不适宜、临界适宜、一般适宜、较高适宜和高度适宜5个适宜性级别；（4）现有村落中分布于不适宜区的村落占16.45%，临界适宜区和一般适宜区的村落占65.96%，较高适宜区和高度适宜区的村落占17.59%，可见，村落人居环境适宜性指数与村落数量之间呈倒“U”型相关。研究区应结合人居环境适宜性状况对现有村落分布进行调整优化，并针对性地加强人居环境建设，使减贫脱贫与美丽乡村建设协同共进。
- Abstract:
- We took Chengkou County of Chongqing as a case study to explore the spatial distribution of villages and human settlements environment suitability in Qinba Mountain region, which provides a scientific basis for village layout planning and poverty alleviation in backward mountain areas. We analyzed the spatial distribution of villages in Chengkou County by using kernel density analysis and spatial hot spot detection. Based on land relief, vegetation index and hydrology index, we set up the human settlements environment index (HEI) model and evaluated the suitability of human settlement environment in Chengkou County. The results showed that: (1) the high concentration of villages mainly distributed in the western, southern and central regions, the sparsely populated areas mainly distributed in the eastern and northern regions; village density decreasesd from west to east and from south to north，the distribution of villages showed a band-like extension, flaky accumulation, and scattered features of scattered distribution of ‘islands’; (2) the number distribution of villages was closely related to topography, and decreased with the increase of spatially differentiated terrain factor; (3) human settlement environment was divided into five suitability levels: unsuitable, critically suitable, generally suitable, higher suitable and highly suitable; (4) in the existing villages, the villages in the unsuitable areas accounted for 16.45%, the villages in the critical suitable areas and the general suitable areas accounted for 65.96%, and the villages in the higher suitable areas and the highly suitable areas accounted for 17.59%. It can be seen that there is an inverse U-shape correlation between the village suitability index and the number of villages. The research area should adjust and optimize the existing village distribution according to the suitability of the human settlement environment, and strengthen the construction of the human settlement environment in order to synergize the poverty alleviation and the beautiful countryside construction.
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备注/Memo
收稿日期:2018-04-10;改回日期:2018-05-16。
基金项目:国家社会科学基金年度项目“基于生态文明视角的西南贫困地区村落演变与空间优化模式研究”（15BJL110）；重庆师范大学科研创新资助项目“重庆秦巴山连片特困区农村居民点空间分布特征及人居环境适宜性评价研究”（YKC17008）
作者简介:唐倩(1993-),女,安徽铜陵人,硕士研究生,研究方向为城乡规划与区域发展。E-mail:2511547914@qq.com
通讯作者:李孝坤(1962-),男,四川西充人,教授,硕士生导师,主要从事资源环境与区域发展、乡村地理与新农村建设研究。E-mail:cslixk@qq.com