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| 基于CA Markov模型的东川区生态网络构建 |
| Construction of Ecological Network in Dongchuan District Based on CA Markov Model |
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| DOI： |
| 中文关键词: 生态网络 CA Markov模型 土地利用格局 生态环境质量 东川区 |
| 英文关键词: Ecological network CA Markov model Land use pattern Ecological environment quality Dongchuan District |
| 基金项目:国家自然科学基金资助项目（41761081）；云南省社会科学规划办公室重点基金资助项目（ZD202218） |
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| 中文摘要: |
| 以昆明市东川区为研究区，利用CA Markov模型预测东川区2030年土地利用格局，用InVEST模型评估其生态环境质量，发现2020—2030年间土地利用格局变化较小，土地利用类型以林地、草地和耕地为主，生态环境质量等级呈中部低、东西部高分布。结合形态学空间格局分析（MSPA）识别生态源地，利用最小累计阻力模型（MCR）构建东川区时序生态网络，通过对比发现2010—2030年间东川区生态网络结构变化明显。综合网络闭合指数、网络连接度指数及网络连通率对生态网络进行评价，结果表明东川区生态网络复杂程度提高，生物迁徙和能量流动限制程度降低，在未来发展中应持续进行生态保护与修复。 |
| 英文摘要: |
| Taking Dongchuan District， Kunming as the research area， the land use pattern of Dongchuan District in 2030 was predicted by CA Markov model， and its ecological environment quality was evaluated by InVEST model. It was found that the pattern of the land use changed little from 2020 to 2030. The land use types were mainly forestland， grassland， and cultivated land. The distribution of ecological environment quality level was low in the middle and high in the east and west. The ecological sources were identified by morphological spatial pattern analysis. A temporal ecological network in Dongchuan District was constructed by minimum cumulative resistance model（MCR）. Through comparison， it was found that the ecological network structure of Dongchuan District changed significantly from 2010 to 2030. The ecological network was evaluated by network closure index， network connectivity index and network connectivity rate， the results showed that the complexity of the ecological network in Dongchuan District was increased， the restriction of biological migration and energy flow was decreased， and ecological protection and restoration should be continued in the future development. |
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