可持续发展视角下京津冀地区生态用地演变及与经济发展的互馈机制研究

生态用地在维持生态平衡、保障国土生态安全、应对全球气候变化中具有重要地位，是联合国2030可持续发展目标（SDGs）实现的重要基础，更是我国生态文明建设的重要基石。本项目对接2030可持续发展目标，通过构建“规模结构—形态格局—服务功能”多维的生态用地演变测度体系，揭示近40年京津冀地区在“低→较低→中→较高→高”不同经济发展梯度下生态用地演变的时空规律；从“主导因子—辅助因子”角度识别生态用地演变的驱动因子，比较不同经济发展梯度下生态用地演变驱动机制的异同；重视自然和人文要素的相互作用机制，探讨生态用地演变对经济发展的均衡贡献和空间效应，阐明经济发展对生态用地演变的“胁迫—协调”机制和因果机理；提出可持续发展视角下京津冀生态用地调控策略。研究成果不仅能够丰富土地利用/覆被变化研究的理论与方法，而且可为京津冀地区协同发展、可持续发展目标的实现以及因地制宜地推进生态文明战略提供科学支撑。

Ecological land plays an important role in maintaining ecological balance, safeguarding the ecological security of the land, and coping with global climate change. It is not only the foundation for the realization of the United Nations' 2030 Sustainable Development Goals (SDGs) but also the cornerstone of ecological civilization in China. To respond the 2030 SDGs, this project firstly constructs a multi-dimensional ecological land evolution measurement system of "scale structure-morphological pattern-service function." Then it reveals temporal and spatial laws of the evolution of ecological land (EEL) in Beijing-Tianjin-Hebei region in the past 40 years, where its economic development gradient areas features “lower→low→medium→high→higher”. Secondly, it identifies the driving factors of EEL from "dominant factor-auxiliary factor ", comparing and contrasting the driving mechanisms of EEL under different economic development gradients. Thirdly, emphasizing the interaction mechanism between natural and human factors, this project explores the balanced contribution and spatial effect of the EEL on economic development, then clarifies the stress-coordination mechanism and causal mechanism of economic development on the EEL. Furthermore, the ecological land regulation strategies in Beijing-Tianjin-Hebei, which is based on the perspective of sustainable development, is raised in this paper. With these promising contribution, these results can, theoratically, enrich the methods of land use /cover change research, and practically, promote the coupling of ecosystems and economic systems in Beijing-Tianjin-Hebei region. At the same time, it provides a scientific basis for the coordinated development plan and the strategy of ecological civilization construction according to local conditions.