| 陕北黄土高原土地利用强度与生境质量耦合协调空间网络分析 |
| 摘要点击 494 全文点击 7 投稿时间：2025-07-24 修订日期：2025-09-08 |
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| 中文关键词 土地利用强度 生境质量 耦合协调 社会网络分析 陕北黄土高原 |
| 英文关键词 land use intensity habitat quality coupling coordination social network analysis Loess Plateau of Northern Shaanxi |
| DOI 10.13227/j.hjkx.202507309 |
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| 中文摘要 |
| 探究土地利用强度和生境质量的时空演变与耦合关系对实现人地系统和谐发展与生态系统科学管理具有重要意义. 聚焦陕北黄土高原这一典型生态脆弱区，应用耦合协调模型评估区域土地利用强度与生境质量的耦合关系与协调水平，引入修正的引力模型与社会网络分析，解读二者耦合关系的空间网络特征. 结果表明：①研究区土地利用强度呈现“中部高、南北低”的空间态势，低强度区收缩聚集，中高强度区扩张延伸. 生境质量以“北低-中稳-南高”阶梯分布，2000~2020年平均指数为0.603 4、 0.603 8、 0.603 6、 0.601 5和0.597 3，先升后降. ②土地利用强度和生境质量的耦合协调度从2000年0.718降至2015年0.691，2020年微升至0.695，呈现出先波动下降后回升态势，空间分布“中部高、南北分化”，县域间协调差异逐步缩小. ③耦合协调度的空间关联度呈现“中部减弱、南北增强”格局，能源富集区与生态农业区的关联强度显著增强，生态脆弱带的关联效应持续衰减. ④2000~2020年，耦合协调空间关联网络保持稳定，呈现中等偏低密度（0.248 3~0.255 0）、全连通及扁平化特征，网络效率从0.811 6微升至0.815 2，随生态政策推进逐步优化. 通过分区管控、建立协同机制，推动网络优化治理可促进陕北人地系统协调发展. |
| 英文摘要 |
| Exploring the spatiotemporal evolution and coupling relationship between land use intensity and habitat quality is of great significance for achieving harmonious development of the human-land system and scientific management of ecosystems. This study focuses on the Loess Plateau of northern Shaanxi， a typical ecologically fragile region. It applies a coupling coordination model to evaluate the coupling relationship and coordination level between regional land use intensity and habitat quality and introduces a modified gravity model and social network analysis to interpret the spatial network characteristics of their coupling relationship. The results show that： ① The spatial pattern of land use intensity in the study area demonstrated a “high in the central region and low in the northern and southern regions” trend. Areas with low intensity were shrinking and aggregating， while areas with medium and high intensity were expanding and extending. The habitat quality presented a stepped distribution of “low in the north - stable in the central region - high in the south.” The average indices were 0.603 4， 0.603 8， 0.603 6， 0.601 5， and 0.597 3， showing a trend of first rising and then falling. ② The coupling coordination degree between land use intensity and habitat quality decreased from 0.718 in 2000 to 0.691 in 2015 and slightly rose to 0.695 in 2020， showing a trend of first fluctuating downward and then rebounding. The spatial distribution was characterized by “high in the central region and differentiation between the north and the south，” and the coordination differences among counties were gradually narrowing. ③ The spatial correlation of coupling coordination degree presented a pattern of “weakening in the central region and strengthening in the north and south.” The correlation intensity between energy-rich areas and ecological agricultural areas significantly increased， while the correlation effect in ecologically fragile zones continued to decline. ④ From 2000 to 2020， the spatial association network of coupling coordination remained stable， exhibiting characteristics of moderately low density （0.248 3-0.255 0）， full connectivity， and flattening. The network efficiency slightly increased from 0.811 6 to 0.815 2 and gradually optimized with the advancement of ecological policies. Promoting optimized network governance through zoning management and the establishment of collaborative mechanisms can facilitate the coordinated development of the human-land system in northern Shaanxi. |
