Building an ecological security pattern (ESP) can safeguard and improve the structure, functions and services of regional ecosystems. Furthermore, it is also one of the significant spatial methods to mitigate the conflict between ecological conservation and economic growth. Most previous researches on the construction of ESP have directly utilized extensive regions of forestland, grassland, water area or nature reserves as ecological sources (ESs) without weighing the habitat quality (HQ) and ecological protection red line (EPRL). The ES of the Dawen River basin (DRB) was identified through morphological spatial pattern analysis (MSPA) and landscape connectivity index. By employing the minimum cumulative resistance model (MCR), the potential ecological corridor (EC) was identified, and its importance was evaluated by gravity model. Simultaneously, the spatial properties of HQ and ecological resistance (ER) were analyzed. Finally, this paper proposed an optimization strategy for ESP in accordance with the EPRL. The results indicate that: (1) The DRB contained 15 important ESs, mainly concentrated in water and mountain forest areas. (2) 105 ECs were extracted by MCR and gravity model, including 35 level 1 corridors and 70 level 2 corridors, which were primarily concentrated in the eastern region of the basin. (3) Based on the spatial characteristics of HQ and ER, as well as the EPRL in the research, the ESP of “one axis, two belts and five zones” in the DRB was constructed and control strategies were proposed. This research offers some reference for ecological environment protection and restoration and regional sustainable development in the Yellow River basin.

中文翻译：

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应用MSPA-MCR模型构建流域生态安全格局——以大汶河流域为例

构建生态安全格局（ESP）可以保障和改善区域生态系统的结构、功能和服务。此外，它也是缓解生态保护与经济增长之间冲突的重要空间方法之一。以往关于ESP建设的研究大多直接利用大面积的林地、草地、水域或自然保护区作为生态源（ES），没有权衡生境质量（HQ）和生态保护红线（EPRL）。通过形态空间格局分析（MSPA）和景观连通性指数确定了大汶河流域（DRB）的ES。采用最小累积阻力模型（MCR）识别潜在生态廊道（EC），并利用重力模型评价其重要性。同时，分析了HQ和生态抵抗力（ER）的空间特性。最后，本文根据EPRL提出了ESP的优化策略。结果表明：（1）DRB包含15个重要的ES，主要集中在水域和山林区。 (2)通过MCR和重力模型提取了105个EC，其中1级走廊35个，2级走廊70个，主要集中在流域东部地区。 (3)根据本研究中的总部和ER的空间特征以及EPRL，构建了DRB“一轴、两带、五区”的ESP，并提出了控制策略。该研究为黄河流域生态环境保护与恢复以及区域可持续发展提供一定的参考。