多梯度视角下城乡结合部农村居民点的演化与模拟优化:中国兰白城市群案例研究

IF 6.5 1区 经济学 Q1 DEVELOPMENT STUDIES
Libang Ma , Jieyu Li , Xiang Wang , Wenbo Zhang , Tianmin Tao , Yi Zhong
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引用次数: 0

摘要

随着全球城市化的快速发展,农村土地不断被占用,带来了人地关系的深刻变化。作为城市化前沿地区的农村区域系统,城乡结合部的农村聚落在内部自然因素和外部城市化带来的社会经济因素等多重干扰下,正处于深刻的变革之中。本文基于农村居民点的内外部系统因素,构建分析框架,探讨 2000-2020 年城乡结合部农村居民点的时空演化规律,总结其演化模型,并预测 2030 年不同情景下的农村居民点状况。最后,提出了优化控制策略。结果表明(1)2000-2020 年,受自然环境梯度的影响,乌兰察布市农村居民点规模呈现出靠近河流的低海拔地区减少、远离河流的高海拔地区增加的趋势。在社会经济梯度下,出现了社会经济环境较好的城建区内边缘地区农村居民点规模缩小,社会经济环境较差的城建区外围地区居民点规模扩大的现象。(2)根据不同的环境因素,在内部自然环境中,呈现出 "地形围合 "和 "水源引导 "的演化模式;在社会经济环境中,呈现出 "城市蔓延侵占农村 "和 "人口减少、土地增加 "的演化模式。(3)2030 年农村居民点模拟结果表明,在自然发展(ND)情景下,城市综合发展区外围农村居民点规模继续扩大,内缘农村居民点规模缩小且分布分散。在城乡一体化发展(URD)情景下,农村居民点主要集中在城市综合发展区的核心区,农村居民点转化为城市用地的面积大幅下降。(4)根据不同梯度,将居民点分为集中发展型、限制发展型和移民整治型三种类型。采用重力模式进行片区改造,理论上可节约用地,腾出建设用地指标 327 hm2。与 ND 方案的粗放型发展模式相比,URD 方案在限制城市盲目扩张、实现兰白城乡发展一体化方面具有重要的理论意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Evolution and simulation optimization of rural settlements in urban-rural integration areas from a multi-gradient perspective: A case study of the Lan-Bai urban agglomeration in China

Evolution and simulation optimization of rural settlements in urban-rural integration areas from a multi-gradient perspective: A case study of the Lan-Bai urban agglomeration in China
With the rapid growth of global urbanization, rural land has been continuously occupied, which has brought about profound changes in human-land relationship. As a rural regional system in the frontier area of urbanization, the rural settlements in the urban-rural integration area (URIA) are in a profound transformation due to multiple disturbances such as internal natural factors and social and economic factors brought about by external urbanization. Based on the internal and external system factors of rural settlements, this paper constructs an analytical framework to explore the spatial and temporal evolution pattern of URIA rural settlements from 2000 to 2020, and then summarizes its evolution model, and predicts the situation of rural settlements in different scenarios in 2030. Finally, the optimal control strategy is proposed. The results show that: (1) From 2000 to 2020, affected by the gradient of natural environment, the scale of rural settlements in URIA shows a trend of decreasing in low-altitude areas near rivers and increasing in high-altitude areas far from rivers. Under the socio-economic gradient, there is a phenomenon that the scale of rural settlements in the inner edge of URIA with better socio-economic environment decreases and the scale of settlements in the outer area of URIA with poor socio-economic environment increases. (2) Based on different environmental factors, in the internal natural environment, it shows the evolution mode of “terrain containment” and “water source guidance”, while in the socio-economic environment, it shows the evolution mode of “urban sprawl encroaches rural”, “population decrease and land increase”. (3) The simulation results of rural settlements in 2030 show that the scale of rural settlements in the periphery of URIA continues to increase under the natural development (ND) scenario, while the scale of rural settlements in the inner edge decreases and the distribution is scattered. Under the urban-rural integration development (URD) scenario, rural settlements are mainly concentrated in the core area of URIA, and the area of rural settlements turning into urban land has dropped significantly. (4) Based on different gradients, the settlements are divided into three types: centralized development type, restricted development type and migration remediation type. Patch reconstruction is carried out by gravity model, which can theoretically save land and vacate 327 hm2 of construction land index. Compared with the extensive development model of the ND scenario, the URD scenario has important theoretical significance in limiting the blind expansion of the city and realizing the integration of urban and rural development in Lanbai.
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来源期刊
CiteScore
10.50
自引率
10.30%
发文量
151
审稿时长
38 days
期刊介绍: Habitat International is dedicated to the study of urban and rural human settlements: their planning, design, production and management. Its main focus is on urbanisation in its broadest sense in the developing world. However, increasingly the interrelationships and linkages between cities and towns in the developing and developed worlds are becoming apparent and solutions to the problems that result are urgently required. The economic, social, technological and political systems of the world are intertwined and changes in one region almost always affect other regions.
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