The green infrastructure (GI) network, an important nature-based solution (NBS) strategy, is pivotal for sustainable urban development. However, current research perspectives focus on constructing a static GI network, and research on evaluating and protecting GI networks in the context of spatiotemporal changes has been limited. This research aims to comprehensively characterise the spatio-temporal changes in the GI network and protect its efficiency. We selected Dalian City as a case study and applied the Future Land-use Simulation (FLUS) model to predict its land use for 2030 and 2040. Based on predicted and historical land-use data, the 1990–2040 GI network of Dalian City was constructed utilising the Integrated valuation of ecosystem services and trade-offs (InVEST), morphological spatial pattern analysis (MSPA) and minimum cumulative resistance (MCR) model, while its spatiotemporal changes were evaluated. The results revealed that the hub area exhibited positive growth over time, whereas the link lengths showed an opposite trend. Furthermore, the overall position of the GI network shifted toward the southwest. The flatness indicator detected that the direction of the GI network shape gradually became less pronounced. Consequently, the structure of the GI network shifted from multi-centre to mono-centre. Additionally, priority protection for hubs is mainly in the northeast, while links are primarily in the coastal regions. The urgency of protection for both increases over time. This research developed a dynamic GI network construction and assessment method, providing a scientific basis and reference for future rational GI network planning, ecological protection planning, and related land policy formulation.

中文翻译：

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动态视角下绿色基础设施网络的构建、评估与保护——以辽宁省大连市为例


绿色基础设施 （GI） 网络是一项重要的基于自然的解决方案 （NBS） 战略，对于可持续城市发展至关重要。然而，目前的研究观点集中在构建静态 GI 网络，而在时空变化的背景下评估和保护 GI 网络的研究是有限的。本研究旨在全面描述胃肠道网络的时空变化并保护其效率。我们选择大连市作为案例研究，并应用未来土地利用模拟 （FLUS） 模型来预测其 2030 年和 2040 年的土地利用。基于预测和历史土地利用数据，利用生态系统服务与权衡综合评估 （InVEST）、形态空间格局分析 （MSPA） 和最小累积阻力 （MCR） 模型构建了大连市 1990—2040 年地理标志网络，同时评估了其时空变化。结果表明，枢纽面积随着时间的推移表现出正增长，而链接长度则呈现相反的趋势。此外，GI 网络的总体位置向西南方向移动。平坦度指标检测到 GI 网络形状的方向逐渐变得不那么明显。因此，GI 网络的结构从多中心转变为单中心。此外，枢纽的优先保护主要在东北部，而链路主要在沿海地区。随着时间的推移，对两者进行保护的紧迫性会增加。本研究建立了动态的地理信息网络构建与评价方法，为未来合理的地理信息网络规划、生态保护规划及相关土地政策制定提供了科学依据和参考。