Hierarchical analysis of landscape urbanization and its impacts on regional sustainability: A case study of the Yangtze River Economic Belt of China
Hierarchical analysis of landscape urbanization and its impacts on regional sustainability: A case study of the Yangtze River Economic Belt of China
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DOI：
10.1016/j.jclepro.2020.123267
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发表时间：
2021-01
影响因子：
11.1
通讯作者：
Hongyan Bian;Jie Gao;Jianguo Wu;Xiao Sun;Yufan Du
中科院分区：
文献类型：
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作者：
Hongyan Bian;Jie Gao;Jianguo Wu;Xiao Sun;Yufan Du
景观城市化对人地耦合系统的结构、功能和动态有着深刻的影响。然而，由于城市景观及其社会经济属性的空间异质性，我们对如何使城市系统在不同行政级别和地理空间尺度上更具可持续性的理解存在许多局限性。必须进行基于地方和跨级别的研究，为区域可持续性提供切合实际和针对具体情况的途径。因此，本研究的主要目标是研究景观城市化的多尺度时空格局，潜水员和可持续性的影响，在国家，经济开发区，城市群（UAs）和城市的水平，重点是长江经济带（YREB）。我们探讨了景观城市化，国家发展计划和区域可持续性之间的联系，从景观层次的角度来看，使用景观指标和二元回归。我们的主要发现包括：（1）1990-2015年，长三角建成区面积从9000 km 2扩大到40,000 km 2，景观城市化的时空格局与世界其他主要城市区相似;（2）1990-2015年，受国家发展规划的影响，长江经济带和中国景观城市化的东西部差异持续扩大;（3）长江经济带景观城市化总体格局呈现东西向梯度格局，城市等级与城市等级交织，主要受地理、人口和自上而下的政府政策的影响;（4）景观城市化与社会经济发展之间的正反馈支持了快速城市化，导致公共绿色空间不足，空气质量恶化，淡水短缺和污染，基础设施发展不足，特别是在沿海城市群、特大城市和超级特大城市。为了实现YREB地区的可持续性，未来的政策需要解决地理空间差异，并尽量减少社会经济发展的梯度。层次景观方法为改善区域景观规划和管理的可持续性提供了新的见解。
Landscape urbanization has profound influences in the structure, function, and dynamics of the coupled human-environmental systems (CHESs). However, due to the spatial heterogeneity of urban landscape and its socioeconomic attributes, there are many limitations in our understanding of how to render urban systems more sustainable across different administrative levels and geospatial scales. Place-based and cross-level research must be conducted to provide realistic and context-specific pathways to regional sustainability. Thus, the main objectives of this study were to investigate the multiscale spatiotemporal patterns, divers, and sustainability impacts of landscape urbanization at the levels of nation, economic development zones, urban agglomerations (UAs), and cities, with a focus on the Yangtze River Economic Belt (YREB). We explored the linkages among the landscape urbanization, national development plans, and regional sustainability from the hierarchical landscape perspective, using landscape metrics and bivariate regressions. Our main findings include: (1) the YREB’s built-up area expanded from 9000 to 40,000 km2during 1990–2015, and the general spatiotemporal patterns of landscape urbanization were similar to those in other major urban regions worldwide; (2) influenced by national development plans, the east-west disparities of landscape urbanization continued to widen in the YREB and China as a whole during 1990–2015; (3) the overall landscape urbanization pattern of the YREB was characterized by an east-west gradient interwoven with hierarchies of UAs and cities that were influenced mainly by geography, demography, and top-down governmental policies; (4) positive feedbacks between landscape urbanization and socioeconomic development underpinned rapid urbanization, resulting in insufficient public green space, deteriorated air quality, freshwater shortages and pollution, and inadequate infrastructure development, especially in the coastal urban agglomerations (UAs), megacities and super megacities. To achieve sustainability of the YREB region, future policies need to address the geospatial disparities and minimize the gradients of socioeconomic development. The hierarchical landscape approach provides new insights for improving regional landscape planning and management for sustainability.