检查一个港口城市的非正式城市增长趋势
Cai Li1, Sania Khan2, Noman Sahito1
1School of Management, Jiangsu University, Zhenjiang 212013, China.
Heliyon
|December 21, 2023
概括
卡拉奇的非正式建筑区正在迅速扩大,转换空置和绿色土地. 预计这种令人担忧的城市增长趋势将继续,影响未来的土地利用和可持续性.
科学领域:
- 城市和区域规划 城市和区域规划
- 环境地理环境地理
- 地理信息系统 (GIS) 是指地理信息系统.
背景情况:
- 快速的城市发展带来了全球环境挑战.
- 在发展中城市中,非正式的建筑增长是一个重大问题.
- 卡拉奇面临着快速城市扩张带来的越来越大的压力.
研究的目的:
- 分析2000年至2020年卡拉奇非正式建筑增长的时空趋势.
- 预测到2060年未来的非正式建筑扩张情况.
- 为卡拉奇的可持续城市规划提供数据驱动的建议.
主要方法:
- 利用地理信息系统 (GIS) 和高分辨率卫星图像.
- 使用ArcMap生成用于土地利用和土地覆盖 (LULC) 变化的空间数据的数字化地图.
- 使用土地变化模型 (LCM) 和蜂自动马尔科夫 (CA-Markov) 模拟用于变化分析和未来预测.
主要成果:
- 卡拉奇的非正式建筑面积在2000年至2020年间增加了72.88平方公里,达到217.19平方公里.
- 大多数非正式建筑扩张源自空地 (71.01平方公里).
- 未来的预测表明,到2060年,该地区的面积可能会扩大到317.63平方公里,主要侵犯东部的农业和空置土地.
结论:
- 卡拉奇的非正式建筑增长迅速而令人担忧,严重影响土地资源.
- 需要紧急的政策干预来管理非正式发展并促进可持续的城市规划.
- 该研究强调了规划者和当局应对不受控制的城市扩张的关键需求,以实现可持续发展目标.
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