| 绿洲城市生态网络的时空演变与多情景模拟分析：以银川市为例 |
| 摘要点击 433 全文点击 23 投稿时间：2024-12-26 修订日期：2025-04-03 |
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| 中文关键词 生态网络格局 PLUS模型 形态学空间格局分析（MSPA） 电路理论 银川市 |
| 英文关键词 ecological network patterns PLUS model morphological spatial pattern analysis （MSPA） circuit theory Yinchuan City |
| DOI 10.13227/j.hjkx.20260227 |
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| 中文摘要 |
| 构建稳定健康的生态网络是推动绿洲城市可持续发展的重要手段. 采用“生态源地识别-阻力面构建-生态廊道提取-生态网络优化”的研究模式，对银川市2000年、2010年和2020年生态网络的时空演变与PLUS模型模拟的2030年多情景生态网络进行分析. 结果表明：①20 a来生态源地面积呈下降趋势；2030年生态保护情景的生态源地面积较自然发展和经济发展情景更大. ②20 a来生态廊道长度呈减少趋势，但生态网络指数呈增加趋势，生态网络结构更为稳固；2030年生态保护情景的廊道长度与生态网络指数表现最优. ③100 m是银川市生态廊道的最佳宽度，此时生态廊道的面积为55.07 km2，生态夹点和生态障碍点面积分别为1.18 km2和2.38 km2. ④根据优化对策改进的生态网络更加稳定和健康，生态廊道长度和面积分别增加15.27%和25.24%. 研究结果可从系统角度指导银川市生态网络空间构建，从理论角度推动生态保护修复工程的实施和降低人类活动对生态系统的干扰，可为国土空间生态保护与黄河流域高质量发展先行区建设提供依据和参考. |
| 英文摘要 |
| Constructing a stable and healthy ecological network is an important means to promote the sustainable development of oasis cities. This study adopts the research model of ‘ecological source identification-resistance surface construction-ecological corridor extraction-ecological network optimization’ to analyze the spatial and temporal evolution of the ecological network in Yinchuan City in 2000， 2010， and 2020 and the multi-scenario ecological network simulated by PLUS model in 2030. The results showed that： ① The area of ecological sources has been declining over the past 20 years. Ecological sources were larger in the ecological protection scenario than in the natural development and economic development scenarios. ② Over the past 20 years， the length of ecological corridors has been decreasing， but the ecological network index has been increasing， and the ecological network structure is more solid. The corridor length and ecological network index of the ecological protection context had the best performance. ③ The optimal width of the ecological corridor in Yinchuan City was 100 m， at which time the area of the ecological corridor was 55.07 km2， and the areas of the ecological pinch points and ecological obstacles were 1.18 km2 and 2.38 km2， respectively. ④ The improved ecological network based on the optimization countermeasures was more stable and healthier， with the length and area of ecological corridors increasing by 15.27 % and 25.24 %， respectively. The results of the study can guide the spatial construction of the ecological network in Yinchuan City from a systematic perspective， promote the implementation of ecological protection and restoration projects， and reduce the interference of human activities on the ecosystem from a theoretical perspective. They also provide a basis and reference for the ecological protection of the national land space and the construction of a high-quality development pioneer zone in the Yellow River Basin. |
