In recent years, landscape fragmentation has become increasingly serious due to the impact of human activities. The ecological network can ensure the ecological function of the region through linearly connecting ecological corridors and effectively solving the problem of landscape fragmentation that occurs in the evolution of landscape patterns. Based on MSPA and MCR models, the article analyses the distribution and changes of landscape types in the Haihe River basin and constructs an ecological network in the study area by combining the local ecological characteristics of the basin. The network structure is optimized in the end by selecting three large stepping stones, constructing 69 internal ecological stepping stones, identifying 212 fracture points, and adding seven ecological corridors to build a point–line surface network structure with an internal and external double-loop structure. The connectivity of the network structure is evaluated by using complex network method. It is calculated that the network connectivity performance is improved by 13.95% after optimization, which means the species exchange in the study area is closer.

中文翻译：

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基于形态空间格局分析和最小累积阻力模型的海河流域生态网络构建与优化

近年来，受人类活动影响，景观破碎化日益严重。生态网络可以通过线性连接的生态廊道保证区域的生态功能，有效解决景观格局演化过程中出现的景观破碎化问题。基于MSPA和MCR模型，分析海河流域景观类型的分布和变化，结合流域局部生态特征构建研究区生态网络。最终优化网络结构，选择3块大垫脚石，构建69块内部生态垫脚石，识别断裂点212个，新增7条生态廊道，构建内外双环结构的点线面网络结构。采用复杂网络方法评估网络结构的连通性。经计算，优化后网络连通性性能提高了13.95%，意味着研究区物种交换更加紧密。