Equivalent factors of ecological service value.

Rural reconstruction plays a pivotal role in the revitalization of rural areas and the development of regions. Understanding the pattern and direction of rural settlement reconstruction is crucial for effectively coordinating urban and rural development, as well as promoting regional rural revitalization. The present study proposes a novel approach to elucidate the evolution and spatial reconstruction of rural settlements by integrating features of agglomeration effect and ecological effect. By employing GIS spatial analysis technology and ecosystem service value modeling, the research analyzes the combined spatial agglomeration and ecological value characteristics of rural settlements in an arid oasis area, specifically focusing on the Hexi Corridor. Based on the analysis, the study identifies specific rural settlement reconstruction zoning and directions for optimization, considering rural settlement accessibility. The study reveals three key findings: (1) There are significant differences in the scale density and spatial distribution of rural settlements across the Hexi Corridor. (2) The overall ecological environment quality is good, and there is significant spatial differentiation in the ecosystem service value, influenced by topographic factors. (3) The optimal layout mode for rural settlements in the Hexi Corridor is the combination type of ‘higher-ecological higher-density’. Based on the combined agglomeration effect and ecological effect features, the research determines the reconstruction scope of alienated rural settlements. Additionally, four predominant reconstruction modes are identified: urban agglomeration type, central village construction type, internal coordination type, and ecological protection type. The study proposes viable reconstruction paths for rural settlements based on these modes.

乡村重构在乡村振兴与区域发展中具有关键支撑作用。明晰乡村聚落（rural settlement）的重构模式与发展方向，对于有效统筹城乡发展、推进区域乡村振兴至关重要。本研究提出一种融合集聚效应与生态效应特征的创新方法，用以阐明乡村聚落的演化规律与空间重构路径。本研究借助地理信息系统（GIS）空间分析技术与生态系统服务价值（ecosystem service value）建模方法，以干旱绿洲区河西走廊为研究区域，剖析乡村聚落的空间集聚特征与生态价值特征。基于上述分析，结合乡村聚落可达性，本研究明确了具体的乡村聚落重构分区与优化方向。本研究得出三项核心结论：(1) 河西走廊范围内乡村聚落的规模密度与空间分布存在显著差异；(2) 区域整体生态环境质量良好，受地形因素影响，生态系统服务价值呈现显著空间分异特征；(3) 河西走廊乡村聚落的最优布局模式为‘高生态-高密度’组合类型。结合集聚效应与生态效应特征，本研究划定了异化乡村聚落的重构范围。此外，本研究识别出四类主导重构模式：城市群带动型、中心村建设型、内部协调型与生态保护型。据此，本研究针对各类模式提出了切实可行的乡村聚落重构路径。