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南昌大学团队《Geography and Sustainability》新研究!

  • 2026-02-08 17:35:08
南昌大学团队《Geography and Sustainability》新研究!

近日,南昌大学/江西财经大学刘耀彬教授、魏国恩研究员在《Geography and Sustainability》发表最新成果,题为《The mitigating effects of urban resilience on surface urban heat islands: Nonlinear responses, threshold effects, and spatial heterogeneity》。李同宁博士生为第一作者,刘耀彬教授和魏国恩研究员为论文通讯作者。

01

导读

城镇化导致的景观破碎、湿地退化及生态韧性下降已成为威胁中国大湖区可持续发展的核心问题。厘清大湖区生态韧性对城镇化的响应机制,是实现湖区生态精准调控、提升区域适应能力、推进美丽中国与韧性城市建设的关键科学任务。该研究构建了中国大湖区生态韧性的综合评估框架,精准揭示了城镇化对生态韧性的空间溢出效应与非线性门槛规律。系统回答了“大湖区生态韧性如何响应城镇化压力?其空间作用边界在哪里?如何通过空间规划提升大湖区韧性?”等关键问题。研究可为美丽中国建设背景下的大湖区国土空间精准规划与生态修复提供关键科学依据。

02

摘要

中国大湖区在快速且高强度的城市化进程中,常面临景观破碎化、湿地退化以及生态韧性下降等问题。然而,中国大湖区生态韧性对城市化的响应机制仍不明确。本研究以中国五个大湖区为对象,探讨2000—2020年间生态韧性与城市化的时空演变特征,并沿“中心—湖滨—外围”梯度分析生态韧性的动态变化模式。研究结合空间杜宾模型与面板门槛模型,揭示城市化对五个大湖区生态韧性的空间溢出效应与门槛效应。结果表明,2000—2020年生态韧性总体下降约21%。生态韧性低值区呈现明显的“中心—外围”收缩趋势,主要向湖滨、河岸及道路网络等人类活动高度集聚区域扩展。在经济城市化与土地城市化的驱动下,研究区平均城市化水平由0.06提升至0.13,其中湖滨、河岸及道路网络是城市扩张的关键区域。城市化对生态韧性表现出显著的负向空间溢出效应。随着距离中心湖泊增加,城市化对生态韧性的负面影响呈现以81 km为门槛的两阶段递减特征。本研究从城市化影响下大湖区生态韧性响应过程出发,加深了对人地关系耦合机制的理解。基于多维度“中心—湖滨—外围”分析框架,研究还为大湖区韧性城市建设提供空间优化思路,为生态脆弱湖区的可持续发展与适应能力提升提供经验。

03

核心内容

研究聚焦于人地矛盾日益突出的中国大湖区(图1)。研究将大湖区界定为以大型淡水湖为核心、社会经济高度关联的城市复合体,具体包括环鄱阳湖、环洞庭湖、环太湖、环洪泽湖与环巢湖五大湖区。研究范围涵盖湖区及其社会经济辐射范围内的187个县(区)。

图1:中国大湖区地理位置与土地利用类型分布

研究基于“规模-密度-形态”三维评估框架(图2),结合遥感与GIS空间分析,量化了2000—2020年间五大湖区的生态韧性水平(图3)。结果表明,大湖区整体生态韧性呈显著下降趋势,二十年间下降率达21%,呈现出由“湖心-湖滨-外围”的阶梯式退化格局。具体而言,湖心区域因生态基础设施完整、自然基底良好,生态韧性维持较高水平;而湖滨及沿河、沿路区域因人类活动高度集聚,成为生态韧性低值集中区与快速退化区。

2技术路线

32000—2020年大湖区生态韧性演变格局

通过构建空间杜宾模型与面板阈值模型,研究进一步揭示了城镇化对生态韧性的空间影响机制。研究发现,城镇化对生态韧性存在显著的负向空间溢出效应,即本地区城镇化不仅降低本地生态韧性,亦对周边区域产生额外压力;其总效应为-0.486,其中间接效应(即空间溢出部分)占比达13.6%。研究同时识别出81公里为影响强度的空间阈值:在距湖心81公里范围内,城镇化对生态韧性的负面影响更为强烈(系数为-0.31);超出此范围,影响程度减弱至-0.14。

研究指出,尽管大湖区已实施包括生态红线在内的空间管控政策,但城镇化进程与生态韧性退化之间仍存在显著的空间失配现象。例如,环太湖东部等城镇化高强度区域,生态韧性退化严重但调控力度不足;而部分外围区域虽韧性本底较高,却面临城镇化压力转移的风险。为实现美丽中国与韧性城市建设目标,未来应着力构建“整体-外围-湖滨”三级差异化空间治理体系(图4),强化湖滨地区生态修复,引导城镇化压力向外围适宜区域有序转移,以形成连通、高效、具有韧性的大湖区国土空间格局。

图4:城镇化对大湖区生态韧性的影响及不同功能区域的空间划分示意

论文引用:Li T, Wei G, Xu M, Li D, Deng W, Liu Y, He B. Spatio-temporal responses of ecological resilience to urbanization in five Great Lakes Regions (GLRs) in China and implications for building resilient GLRs[J]. Geography and Sustainability, 2026, 7(1). DOI: 10.1016/j.geosus.2025.100395 

网址链接:https://doi.org/10.1016/j.geosus.2025.100395

END

以上内容来源于城市地理之光,为学术分享,仅供科研交流,如有错误/侵权等,请联系修改或删除。联系方式:Novel_2020

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  1. CONNECT:[ UseTime:0.001019s ] mysql:host=127.0.0.1;port=3306;dbname=aa460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001685s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000708s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000674s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001566s ]
  6. SELECT * FROM `set` [ RunTime:0.000583s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001446s ]
  8. SELECT * FROM `article` WHERE `id` = 471258 LIMIT 1 [ RunTime:0.004976s ]
  9. UPDATE `article` SET `lasttime` = 1770987381 WHERE `id` = 471258 [ RunTime:0.005666s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.002786s ]
  11. SELECT * FROM `article` WHERE `id` < 471258 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.005365s ]
  12. SELECT * FROM `article` WHERE `id` > 471258 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000993s ]
  13. SELECT * FROM `article` WHERE `id` < 471258 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002654s ]
  14. SELECT * FROM `article` WHERE `id` < 471258 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.020000s ]
  15. SELECT * FROM `article` WHERE `id` < 471258 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.026727s ]
0.239569s