Huang Min, Liu Fen, Gong Daohong, Lin Hui, Chen Yong, Hu Bisong, Ge Yong, Xiao Changjiang
School of Geography and Environment/Key Laboratory of Poyang Lake Wetland and Watershed Research (Ministry of Education), Jiangxi Normal University, Nanchang 330022, China; Key Laboratory of Natural Disaster Monitoring, Early Warning and Assessment of Jiangxi Province, Jiangxi Normal University, Nanchang 330022, China.
School of Geography and Environment/Key Laboratory of Poyang Lake Wetland and Watershed Research (Ministry of Education), Jiangxi Normal University, Nanchang 330022, China.
Sci Total Environ. 2024 Dec 1;954:176157. doi: 10.1016/j.scitotenv.2024.176157. Epub 2024 Sep 12.
High-efficiency land use facilitates the maximization of land utilization, lowers urban construction costs, and optimizes urban functional patterns. The Sustainable Development Goal 11.3.1 (SDG 11.3.1) can be used to assess land use efficiency (LUE), understand the current state of land use, and identify the potential for optimization. This study combines SDG 11.3.1 with other supplementary indicators to establish a land use efficiency evaluation system. This system provides a more precise understanding of internal city changes and enables a scientific assessment of urban LUE in Mainland China. The results showed that: (1) A significant number of cities were growing cities, particularly in the eastern region, with the population of built-up areas increased by 2.92 times from 2000 to 2020; (2) From 2000 to 2020, cities in China underwent rapid urban expansion, with the most significant urban expansion index in 2015-2020; (3) The coordination between population growth rate (PGR) and land consumption rate (LCR) worsened in the western region, while the central and eastern regions showed better coordination. (4) As the urban expansion index increased, the compactness index of the cities in the above three regions decreased and were at lower levels. This study establishes an evaluation system to assess the LUE and reveals the spatial and temporal characteristics of urban and population change. It holds paramount significance in enhancing LUE and encouraging sustainable development in Mainland China and serves as a valuable reference for global urban management.
高效土地利用有助于实现土地利用最大化，降低城市建设成本，并优化城市功能格局。可持续发展目标11.3.1（SDG 11.3.1）可用于评估土地利用效率（LUE），了解土地利用现状，并确定优化潜力。本研究将SDG 11.3.1与其他补充指标相结合，建立了土地利用效率评价体系。该体系能更精确地了解城市内部变化，并对中国大陆的城市土地利用效率进行科学评估。结果表明：（1）大量城市处于增长状态，尤其是东部地区，建成区人口从2000年到2020年增长了2.92倍；（2）2000年至2020年，中国城市经历了快速的城市扩张，2015 - 2020年城市扩张指数最高；（3）西部地区人口增长率（PGR）与土地消耗率（LCR）之间的协调性变差，而中部和东部地区协调性较好。（4）随着城市扩张指数的增加，上述三个地区城市的紧凑度指数下降且处于较低水平。本研究建立了一个评估土地利用效率的评价体系，揭示了城市和人口变化的时空特征。这对提高中国大陆的土地利用效率和促进可持续发展具有至关重要的意义，并为全球城市管理提供了有价值的参考。
