Beyond greenness and canopy height: Ecological thresholds and structure-function decoupling of vegetation along urban-rural gradients in global megacities
文献类型：期刊论文
| 作者 | Hou, Yali1,3; Dou, Yinyin3; Kuang, Wenhui3; Guo, Changqing1,3; Bao, Wenxuan1,3; Yin, Zherui2 |
| 刊名 | URBAN FORESTRY & URBAN GREENING
 |
| 出版日期 | 2026-04-01 |
| 卷号 | 118页码:129346 |
| 关键词 | Canopy height Structure-function relationship Urban-rural gradient Ecological thresholds Vegetation functional stability |
| ISSN号 | 1618-8667 |
| DOI | 10.1016/j.ufug.2026.129346 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Understanding the relationship between vegetation structure and functional stability is essential for assessing and maintaining urban ecosystems as global urban expansion continues. This study combines global 1-meter resolution canopy height data with long-term EVI to analyze spatial patterns and structural-functional relationships of vegetation across urban-rural gradients in 53 major cities worldwide. Our results show a nonlinear threshold response of vegetation functional stability (CV) to both canopy height and EVI. Temporal variability was minimized within an optimal stability zone, specifically at canopy heights of 14-16 m and EVI values around 0.53-0.55. When vegetation structure or function deviated from this zone, stability declined, forming a U-shaped relationship. These thresholds varied with climatic and urban contexts, generally higher in arid regions and urban cores, and lower in warm temperate zones and suburban areas. Globally, vegetation in most cities remained below optimal thresholds, with suburban areas closer to the stability threshold. Additionally, multiple patterns of structural-functional decoupling were observed along the gradient. In some cities, high functional stability was maintained even under low structural development, likely due to intensive management. In others, functional stability improved without significant structural changes, possibly buffered by surrounding seminatural vegetation. In areas where both structure and function were low, temporal variability reflected a state of reduced function and limited resilience. This study provides a framework for identifying stability mechanisms and offers insights for targeted green-space planning, emphasizing the importance of maintaining vegetation within its optimal stability range for climate adaptation and ecological resilience. |
| URL标识 | 查看原文 |
| WOS关键词 | BIODIVERSITY |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology ; Forestry ; Urban Studies |
| 语种 | 英语 |
| WOS记录号 | WOS:001692968400001 |
| 出版者 | ELSEVIER GMBH |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/220951]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Kuang, Wenhui |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; 2.Inner Mongolia Normal Univ, Coll Geog Sci, Hohhot 010051, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Hou, Yali,Dou, Yinyin,Kuang, Wenhui,et al. Beyond greenness and canopy height: Ecological thresholds and structure-function decoupling of vegetation along urban-rural gradients in global megacities[J]. URBAN FORESTRY & URBAN GREENING,2026,118:129346. |
| APA | Hou, Yali,Dou, Yinyin,Kuang, Wenhui,Guo, Changqing,Bao, Wenxuan,&Yin, Zherui.(2026).Beyond greenness and canopy height: Ecological thresholds and structure-function decoupling of vegetation along urban-rural gradients in global megacities.URBAN FORESTRY & URBAN GREENING,118,129346. |
| MLA | Hou, Yali,et al."Beyond greenness and canopy height: Ecological thresholds and structure-function decoupling of vegetation along urban-rural gradients in global megacities".URBAN FORESTRY & URBAN GREENING 118(2026):129346. |
入库方式： OAI收割
来源：地理科学与资源研究所
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