Geography and Sustainability最新文献_第5页

Effects on heat mitigation, energy use, and carbon savings in urban-scale implementations of nature-based solutions 基于自然的解决方案在城市规模实施中对热量缓解、能源使用和碳节约的影响

IF 8 1区环境科学与生态学 Q1 GEOGRAPHY, PHYSICAL

Geography and Sustainability

Pub Date : 2025-12-01 Epub Date: 2025-09-01 DOI: 10.1016/j.geosus.2025.100362

Jinwook Chung, Kijune Sung

Extensive changes in land cover and energy use resulting from urbanization lead to an imbalance in urban thermal conditions, making cities more susceptible to the impacts of climate change. Nature-based solutions (NbS) that leverage the cooling effect of green spaces to mitigate urban heat are gaining attention as a way to improve urban sustainability in the face of climate change. The study evaluated the urban-scale application of NbS’s impacts on heat mitigation capacity, air temperature, cooling energy, carbon emissions, and carbon sequestration, as well as the resulting economic benefits using the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) Urban Cooling Model (UCM). Green roofs as building adaptations, land use adaptations such as the expansion of urban parks and roadside green space, forest restoration, and multiple adaptations, which are combinations of building and land use adaptations, were considered applicable NbS. Cool roofs were also studied to compare their effects with other urban green infrastructure. The results showed that simultaneously implementing the multiple adaptation methods is the most effective if the applicable areas are sufficient. Considering the implemented area ratio, urban parks are the most effective single adaptive measure, with energy savings of 14.75, 8.63, and 1.98 times higher than those of 100 % green roofs, cool roofs, and 20 % roadside green space expansions, respectively. Restoring forests (21.29 km²) can yield 4.7 times higher energy savings than installing 100 % green roofs (62 km²). In contrast, deforestation loses more energy and carbon than cool roofs can save. This study can help provide an appropriate strategy for achieving urban carbon neutrality by reducing carbon emissions and increasing carbon sequestration through NbS in addition to relieving urban temperatures.

城市化导致的土地覆盖和能源利用的广泛变化导致城市热条件的不平衡，使城市更容易受到气候变化的影响。基于自然的解决方案（NbS）利用绿地的冷却效应来缓解城市热量，作为面对气候变化提高城市可持续性的一种方式，正受到人们的关注。本研究利用生态系统服务与权衡综合评价（InVEST）城市降温模型（UCM），评估了NbS在城市尺度上对减热能力、气温、制冷能量、碳排放和碳固存的影响，以及由此产生的经济效益。绿色屋顶作为建筑适应性，土地利用适应性，如城市公园和路边绿地的扩展，森林恢复，以及建筑和土地利用适应性的组合，被认为是适用的NbS。还研究了冷屋顶，将其与其他城市绿色基础设施的效果进行比较。结果表明，在适用区域足够的情况下，同时实施多种适应方法是最有效的。从实施面积比来看，城市公园是最有效的单一适应性措施，其节能效果分别是100%绿化屋顶、凉爽屋顶和20%路边绿地扩展的14.75倍、8.63倍和1.98倍。恢复森林（21.29平方公里）的节能效果是安装100%绿色屋顶（62平方公里）的4.7倍。相比之下，砍伐森林损失的能量和碳比凉爽屋顶所能节省的要多。本研究有助于为实现城市碳中和提供一个适当的策略，即通过NbS减少碳排放和增加碳固存，同时降低城市温度。

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引用次数: 0

Strengthening the partnership between the great green walls of China and Africa 加强中非绿色长城伙伴关系

IF 8 1区环境科学与生态学 Q1 GEOGRAPHY, PHYSICAL

Geography and Sustainability

Pub Date : 2025-12-01 Epub Date: 2025-07-16 DOI: 10.1016/j.geosus.2025.100341

Xiaosong Li , Amos Tiereyangn Kabo-Bah , Annah Lake Zhu , Tong Shen , Chaochao Chen , Gilles Amadou Ouedraogo , Xiaoxia Jia , Qi Lu , Bo Wu , Marcelin Sanou

引用次数: 0

Impacts of China food trade on global resource and environment: A sustainable development assessment 中国食品贸易对全球资源与环境的影响：一个可持续发展的评估

IF 8 1区环境科学与生态学 Q1 GEOGRAPHY, PHYSICAL

Geography and Sustainability

Pub Date : 2025-12-01 Epub Date: 2025-07-12 DOI: 10.1016/j.geosus.2025.100339

Xiang Wang , Xin Li , Libang Ma , Jing Bai , Li Li , Simin Yan

Meeting China’s burgeoning food demand while safeguarding the resources and environmental long-term development is a critical challenge for the sustainable food systems of this century. China’s accelerated food imports have far-reaching implications for global resource allocation and environmental development. Hence, detailed information regarding China’s food trade resource-environmental impacts is imperative for the design of effective policies that promote environmental mitigation and resource conservation. This study estimated the spatial transfers of virtual water trade (VWT), virtual land trade (VLT), and virtual GHG emission trade (VGT) embodied in China’s food trade. Findings indicate that the VWT, VLT, and VGT transfers embodied in China’s food trade increased by 10.4 %, 9.8 %, and 15.2 % annually. It is more important to mention that virtual water import (VWI) and virtual land import (VLI) saved 119.5 × 10⁹m³ of global water resources and 29.5 Mha of land resources, respectively, but virtual GHG emission import (VGI) increased global 13 Mt CO₂-eq GHG emissions. The divergent impacts of China’s food import on global food sustainability stem from variations in virtual water content, yields and emission intensities. Moreover, significant differences in sustainability scores were found among the top 15 importing countries, indicating that China’s food trade contributes to the deepening of global food system sustainability. This study highlights the need for a multifaceted approach that considers the various environmental impacts of food trade. China is therefore encouraged to fully integrate the benefits of resource and environmental conservation into its sustainable food trade strategy, restructuring the food system to ensure the long-term nourishment of its large population.

在满足中国日益增长的粮食需求的同时，保障资源和环境的长期发展，是本世纪可持续粮食系统面临的重大挑战。中国粮食进口加速对全球资源配置和环境发展具有深远影响。因此，关于中国食品贸易资源环境影响的详细信息对于设计有效的促进环境缓解和资源保护的政策是必不可少的。研究估算了虚拟水交易、虚拟土地交易和虚拟温室气体排放交易在中国食品贸易中的空间转移。研究结果表明，中国食品贸易中体现的VWT、VLT和VGT转移年增长率分别为10.4%、9.8%和15.2%。值得一提的是，虚拟水进口（VWI）和虚拟土地进口（VLI）分别为全球节约了119.5 × 109m3的水资源和29.5 Mha的土地资源，但虚拟温室气体排放进口（VGI）却增加了全球13mt CO2-eq的温室气体排放。中国粮食进口对全球粮食可持续性的不同影响源于虚拟含水量、产量和排放强度的变化。此外，排名前15位的进口国在可持续性得分上存在显著差异，这表明中国的食品贸易对全球粮食系统可持续性的深化做出了贡献。这项研究强调需要采取多方面的方法，考虑粮食贸易的各种环境影响。因此，鼓励中国将资源和环境保护的好处充分纳入其可持续粮食贸易战略，重组粮食体系，以确保其庞大人口的长期营养。

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引用次数: 0

Ecological restorations enhance ecosystem stability by improving ecological resilience in a typical basin of the Yangtze River, China 生态修复通过提高长江典型流域的生态恢复力来增强生态系统的稳定性

IF 8 1区环境科学与生态学 Q1 GEOGRAPHY, PHYSICAL

Geography and Sustainability

Pub Date : 2025-12-01 Epub Date: 2025-08-13 DOI: 10.1016/j.geosus.2025.100357

Yixiao Li , Zhengyuan Zhao , Bojie Fu , Yunlong Zhang , Yihe Lü , Ting Li , Shiliang Liu , Gang Wu , Xi Zheng , Xing Wu

Ecological restorations (ERs) have been widely implemented in recent decades to enhance ecosystem stability. However, the extent of their impacts on ecosystem stability and the underlying mechanism remain poorly understood. This study developed a comprehensive framework for ecosystem stability assessment by integrating the temporal stability of ecosystem service (ES) provision, ecological resistance, and ecological resilience. Additionally, ER intensity was quantified using vegetation index trends, while the pathways and magnitudes of key factors driving ecosystem stability were identified by partial least squares structural equation modeling. Using the Jialing River Basin as a case study, our results revealed that forests exhibited the highest ecosystem stability due to their enhanced capacity to maintain temporal stability of ES provision and ecological resilience. However, farmlands demonstrated the strongest ecological resistance, followed by forests and grasslands. ER projects were primarily implemented in northern and southern farmland regions characterized by low ecological resilience. Pathway analysis identified that favorable climates significantly enhanced the temporal stability of ES provision, and rugged topography improved the ecological resistance. However, fragmented landscape patches disrupted stable ES provision by reducing ecological connectivity, and socioeconomic development diminished both resistance and resilience through land-use intensification. Notably, ERs improved ecological resilience, which in turn elevated overall ecosystem stability. Our results indicated that the proposed framework provides a systematic approach for comprehensive ecosystem stability evaluation and offers critical insights for developing region-specific ER strategies.

近几十年来，为了提高生态系统的稳定性，生态恢复（ERs）得到了广泛的应用。然而，它们对生态系统稳定性的影响程度及其潜在机制仍然知之甚少。本研究结合生态系统服务提供的时间稳定性、生态抗性和生态恢复力，建立了一个综合的生态系统稳定性评价框架。利用植被指数趋势量化生态系统内能强度，利用偏最小二乘结构方程模型确定驱动生态系统稳定性的关键因子的路径和大小。以嘉陵江流域为例，研究结果表明，森林具有较强的生态系统稳定性，维持ES供应的时间稳定性和生态恢复力。农田的生态抗性最强，其次是森林和草原。生态修复项目主要在生态恢复力较低的北部和南部农田地区实施。路径分析表明，有利的气候条件显著增强了ES供应的时间稳定性，崎岖的地形增强了生态抗性。然而，破碎的景观斑块通过降低生态连通性破坏了稳定的ES供应，社会经济发展通过土地利用集约化降低了抵抗和恢复能力。值得注意的是，生态恢复力提高了生态系统的整体稳定性。研究结果表明，该框架为生态系统稳定性综合评价提供了系统方法，并为制定区域生态系统稳定性战略提供了重要见解。

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引用次数: 0

Integrating geography for sustainable development: Insights from the 2025 International Workshop on Geography and Sustainability 整合地理学促进可持续发展：来自2025年地理学与可持续性国际研讨会的见解

IF 8 1区环境科学与生态学 Q1 GEOGRAPHY, PHYSICAL

Geography and Sustainability

Pub Date : 2025-12-01 Epub Date: 2025-11-17 DOI: 10.1016/j.geosus.2025.100380

Wenwu Zhao , Zhengyang Wang , Yanxu Liu , Michael E. Meadows

The 2025 International Workshop on Geography and Sustainability, held in Xi’an, China, from 17 to 20 October, convened at a time of intensifying global challenges and renewed efforts to advance sustainable development. Under the theme “Geography for Sustainable Development: Interdisciplinary Perspectives”, the event explored innovative approaches to strengthening geography’s role in global and regional sustainability. Five key research priorities were identified, viz. integration of geographical methods; integration of geographical processes; integration of geographical regions; Coupled Human and Natural Systems; and regional and global sustainability. The conference featured several important international initiatives: the establishment of the African Chapter of the International Geographical Union Commission on Geography and Sustainability, the launch of Phase II of the Global Dryland Ecosystem Programme, and the signing of a cooperative agreement between the Geographical Society of China and the Egyptian Geographical Society. The wider discussions reflected a growing need to further develop integrated geography as a coherent discipline to better understand and respond to complex human natural interactions. It also called for aligning future research priorities with the proposed United Nations Centennial Goals for 2045, and for strengthening South-South collaboration and dryland research networks. These collective efforts aim to expand geography’s role in both knowledge and action for sustainability.

2025年国际地理与可持续发展研讨会于10月17日至20日在中国西安召开，正值全球挑战日益加剧、各方再次努力推动可持续发展之际。会议以“地理学促进可持续发展：跨学科视角”为主题，探讨了加强地理学在全球和区域可持续发展中的作用的创新方法。确定了五个重点研究重点，即综合地理方法；整合地理过程；地理区域一体化；人与自然耦合系统；以及区域和全球的可持续性。会议提出了几项重要的国际倡议：成立了国际地理联盟地理与可持续发展委员会非洲分会，启动了全球旱地生态系统计划二期，签署了中国地理学会与埃及地理学会的合作协议。更广泛的讨论反映出越来越需要进一步发展综合地理学，使其成为一门连贯的学科，以便更好地理解和应对复杂的人类与自然的相互作用。它还呼吁将未来的研究重点与拟议的2045年联合国百年目标保持一致，并加强南南合作和旱地研究网络。这些集体努力旨在扩大地理在可持续发展知识和行动方面的作用。

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引用次数: 0

Escalating socioeconomic exposure to extreme heat in China: A CMIP6-based analysis of future heatwaves across regions and scenarios 中国日益加剧的极端高温社会经济暴露：基于cmip6的跨区域和情景未来热浪分析

IF 8 1区环境科学与生态学 Q1 GEOGRAPHY, PHYSICAL

Geography and Sustainability

Pub Date : 2025-12-01 Epub Date: 2025-09-15 DOI: 10.1016/j.geosus.2025.100374

Shan Zou , Fubao Sun , Philippe De Maeyer , Tim Van De Voorde , Weili Duan

The future increased frequency and intensity of heat waves (HWs) across China will exacerbate adverse effects on society and the environment. However, changes in socioeconomic exposure remain underexplored. In this study, climate model outputs from the Coupled Model Intercomparison Project Phase 6 (CMIP6), together with population and gross domestic product (GDP) projections were used to investigate projected heat stress and socioeconomic exposure across China and its eight subregions under four shared socioeconomic pathway (SSP) scenarios (SSP1–2.6, SSP2–4.5, SSP3–7.0, and SSP5–8.5) over three periods (2021–2040, 2051–2070, and 2081–2100). Our results indicate a consistent upward trend in the Universal Thermal Climate Index (UTCI) across all scenarios, with intensifying increases over time, peaking at > 6 °C. This suggests a continuous increase in the number of extreme heat events (EHEs) in China. Population exposure to EHEs across the four UTCI thresholds (> 26 °C, > 32 °C, > 38 °C, and > 46 °C) shows an increasing trend. Projections indicate a ∼14-fold increase nationwide, 500-fold increase in Northwest China (NWC), and a 1000-fold in Southwest China (SWC2) under SSP5–8.5 by 2081–2100 compared with current levels. The eastern and southeastern regions, especially the Yangtze River and Pearl River Delta, show significant GDP exposure increases under SSP3–7.0 and SSP5–8.5. Population exposure is mainly driven by climatic effects under severe scenarios, whereas GDP exposure is influenced by interaction effects, particularly under SSP5–8.5 and during the 2090s. This study’s findings offer actionable insights for targeted adaptation in China’s diverse geographies.

未来中国各地热浪频率和强度的增加将加剧对社会和环境的不利影响。然而，社会经济风险的变化仍未得到充分探讨。本研究利用耦合模式比对项目第6阶段（CMIP6）的气候模式输出，结合人口和国内生产总值（GDP）预测，研究了在4种共享社会经济路径（SSP）情景（SSP1-2.6、SSP2-4.5、SSP3-7.0和SSP5-8.5）下3个时期（2021-2040、2051-2070和2081-2100）中国及其8个子区域的热应力和社会经济暴露预测。我们的研究结果表明，在所有情景下，通用热气候指数（UTCI）都呈持续上升趋势，并随着时间的推移而加剧，在6°C时达到峰值。这表明中国的极端高温事件（EHEs）数量持续增加。在四个UTCI阈值（> 26°C、> 32°C、>； 38°C和>； 46°C）上，人群暴露于EHEs呈增加趋势。预估表明，到2081-2100年，在SSP5-8.5下，与当前水平相比，全国范围内将增加~ 14倍，西北地区（NWC）将增加500倍，西南地区（SWC2）将增加1000倍。在SSP3-7.0和SSP5-8.5下，东部和东南部地区，特别是长江三角洲和珠江三角洲地区的GDP暴露显著增加。在严重情景下，人口暴露主要受气候影响驱动，而GDP暴露则受相互作用影响，特别是在SSP5-8.5情景下和本世纪90年代。本研究的发现为中国不同地区的针对性适应提供了可操作的见解。

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引用次数: 0

A global assessment of the risks to biodiversity and Indigenous people’s lands from solar and wind farms 对太阳能和风力发电场对生物多样性和土著人民土地的风险进行全球评估

IF 8 1区环境科学与生态学 Q1 GEOGRAPHY, PHYSICAL

Geography and Sustainability

Pub Date : 2025-12-01 Epub Date: 2025-09-12 DOI: 10.1016/j.geosus.2025.100371

Yuqing Wang , Qian Ding , Xuan Hao , Hongbo Yang , Zelong Qu

The share of wind and solar energy in global energy mix is rising rapidly. Despite their great potential for reducing carbon emissions, poorly planned wind and solar farms may encroach on socio-ecologically sensitive areas, threatening biodiversity and Indigenous people’s traditional land uses. However, these potential risks associated with wind and solar farm development worldwide are poorly understood. Here, we evaluate the potential biodiversity and Indigenous risks from wind and solar energy development by examining the extent to which global wind and solar farms are situated within or adjacent to socio-ecologically sensitive areas. Our analysis revealed that 13,699 wind and solar farms or 14.4 % of the farms’ total footprint area are within protected areas, critical habitats, and Indigenous people’s lands, occupying a total of 26,840 km² of those socio-ecologically sensitive areas. Wind and solar farms overlap with the distribution ranges of 2,310 threatened amphibians, birds, mammals, and reptiles, accounting for 36.3 % of the world’s 6,362 threatened vertebrate species. The encroachment of solar and wind farms on sensitive areas mostly occurs in economically developed countries with substantial wind and solar energy facilities, while many developing countries in the tropics tend to have a higher proportion of such farms situated within sensitive areas. Compared to wind farms, solar farms pose greater risks to biodiversity and Indigenous people’s lands. These findings provide valuable insights into the socio-ecological risks of wind and solar energy development and highlight the urgent need for strategic planning to mitigate the risks.

风能和太阳能在全球能源结构中的份额正在迅速上升。尽管风能和太阳能农场在减少碳排放方面具有巨大潜力，但规划不当的风能和太阳能农场可能会侵占社会生态敏感地区，威胁到生物多样性和土著人民的传统土地利用。然而，这些与全球风能和太阳能发电场发展相关的潜在风险却鲜为人知。在这里，我们通过检查全球风能和太阳能发电场位于社会生态敏感区域内或邻近区域的程度，评估风能和太阳能开发的潜在生物多样性和土著风险。我们的分析显示，13,699个风能和太阳能农场（占农场总足迹面积的14.4%）位于保护区、关键栖息地和土著居民的土地上，占这些社会生态敏感区域的26,840平方公里。风能和太阳能农场与2310种濒危两栖动物、鸟类、哺乳动物和爬行动物的分布范围重叠，占世界6362种濒危脊椎动物的36.3%。太阳能和风力发电场对敏感地区的侵占大多发生在拥有大量风能和太阳能设施的经济发达国家，而热带地区的许多发展中国家往往在敏感地区拥有更高比例的太阳能和风力发电场。与风力发电场相比，太阳能发电场对生物多样性和土著居民的土地构成更大的风险。这些发现为风能和太阳能开发的社会生态风险提供了有价值的见解，并强调了迫切需要制定战略规划来减轻风险。

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引用次数: 0

Mapping geography’s engagement with the Sustainable Development Goals: Research foci, contributions, and future directions 绘制地理学与可持续发展目标的关系：研究焦点、贡献和未来方向

IF 8 1区环境科学与生态学 Q1 GEOGRAPHY, PHYSICAL

Geography and Sustainability

Pub Date : 2025-12-01 Epub Date: 2025-09-28 DOI: 10.1016/j.geosus.2025.100376

Zizhao Ni , Wenwu Zhao , Caichun Yin , Michael E. Meadows , Paulo Pereira

Although geography’s role in advancing the Sustainable Development Goals (SDGs) is widely recognised, a comprehensive quantitative synthesis of its intellectual contributions has been absent. This study fills that critical research gap through a large-scale bibliometric analysis. Drawing from 122 core geography journals (Web of Science, 2010–2024), we employed three-level search criteria (SDGs, sustainability and SDG indicators) to identify a final corpus of 70,122 relevant articles. We then combined publication trend analysis, co-citation and collaboration networks, and keyword co-occurrence mapping to systematically delineate research foci, contributions, and future directions. Our findings reveal six major thematic research clusters: (1) climate change impacts and governance; (2) agricultural landscape and environmental sustainability; (3) resilience and adaptive capability in social-ecological systems; (4) land use change and metacoupling impacts; (5) urban growth and transport accessibility; and (6) biodiversity and ecosystem services. The SDG overlap analysis highlights strong linkages among environmental SDGs, while revealing that SDG 1 (No Poverty) and SDG 10 (Reduced Inequalities) are more isolated. Overall, geography supports the SDGs across four key dimensions: (1) providing spatial data analysis for assessment; (2) conducting regional studies for localisation; (3) applying human-environment interaction research to advance synergies; and (4) strengthening science-policy interface efforts for achievement. To maximise its future impact, this study calls for the geography community to develop a dedicated methodological framework for SDG analysis, proactively contribute to shaping the post-2030 agenda, advance holistic integrated approaches, and prudently harness the power of artificial intelligence to accelerate sustainability transitions.

尽管地理学在推进可持续发展目标（sdg）方面的作用得到了广泛认可，但尚未对其智力贡献进行全面的定量综合。本研究通过大规模文献计量分析填补了这一关键研究空白。从122种核心地理期刊（Web of Science, 2010-2024）中，我们采用了三级搜索标准（可持续发展目标、可持续性和可持续发展目标指标）来确定70,122篇相关文章的最终语料库。然后，我们结合发表趋势分析、共被引和合作网络、关键词共现映射，系统地描绘了研究重点、贡献和未来方向。研究结果揭示了六大专题研究集群：(1)气候变化影响与治理；(2)农业景观与环境可持续性；(3)社会生态系统的复原力和适应能力；(4)土地利用变化及其元耦合影响；(5)城市增长和交通可达性；(6)生物多样性和生态系统服务。可持续发展目标重叠分析强调了环境可持续发展目标之间的紧密联系，同时揭示了可持续发展目标1（消除贫困）和可持续发展目标10（减少不平等）更加孤立。总体而言，地理在四个关键维度上支持可持续发展目标：(1)为评估提供空间数据分析；（二）进行区域本土化研究；(3)应用人与环境相互作用研究促进协同效应；(4)加强科学与政策的对接努力。为了最大限度地发挥其未来影响，本研究呼吁地理学界为可持续发展目标分析制定专门的方法框架，积极参与制定2030年后议程，推进整体综合方法，并审慎利用人工智能的力量加速可持续发展转型。

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引用次数: 0

Precipitation mediates the effects of species diversity and belowground ecosystem multifunctionality on community stability across alpine grasslands, Qinghai-Xizang Plateau 降水介导青藏高原高寒草原物种多样性和地下生态系统多功能性对群落稳定性的影响

IF 8 1区环境科学与生态学 Q1 GEOGRAPHY, PHYSICAL

Geography and Sustainability

Pub Date : 2025-10-01 Epub Date: 2025-07-07 DOI: 10.1016/j.geosus.2025.100336

Miao Liu , Le Sun , Yanli Zhang , Yuqing Liu , Yang Li , Ziyin Du , Fei Peng

Maintaining community stability has profound positive impacts on the ecological functions and sustainable utilization of grassland ecosystems. Numerous studies have explored how community stability responds to climate change and its relationship with plant species diversity. Nevertheless, the impact and underlying mechanisms of belowground ecosystem multifunctionality (BGEMF) on community stability along a precipitation gradient in alpine grasslands remain poorly understood. To address this knowledge gap, we conducted field surveys from 2015 to 2020, measuring plant species diversity, annual net primary productivity (ANPP), and soil physicochemical properties across 79 sites in alpine grassland ecosystems on the Qinghai-Xizang Plateau. Our findings highlight both plant species diversity (standardized total effect: 32 %) and BGEMF (standardized total effect: 75 %) had an indirect effect on stability viaregulating mean ANPP within alpine grasslands. Furthermore, mean annual precipitation substantially impacted both plant species diversity and BGEMF, subsequently affecting community stability. However, temperature had a strong negative regulatory effect on species diversity, the mean and variability of ANPP. Thus, we emphasized the pivotal role of plant species diversity and BGEMF in shaping community stability, and stated the imperative need for species conservation and BGEMF improvement to sustain alpine ecosystems in the face of ongoing climate change.

保持群落稳定对草地生态系统的生态功能和可持续利用具有深远的积极影响。许多研究探讨了群落稳定性对气候变化的响应及其与植物物种多样性的关系。然而，地下生态系统多功能性（BGEMF）对高寒草原沿降水梯度的群落稳定性的影响及其潜在机制尚不清楚。为了解决这一知识缺口，我们于2015年至2020年对青藏高原79个高寒草地生态系统进行了实地调查，测量了植物物种多样性、年净初级生产力（ANPP）和土壤理化性质。研究结果表明，植物物种多样性（标准化总效应为32%）和BGEMF（标准化总效应为75%）通过调节平均ANPP对高寒草地的稳定性有间接影响。此外，年平均降水量对植物物种多样性和BGEMF均有显著影响，进而影响群落稳定性。温度对物种多样性、ANPP平均值和变异率有较强的负调控作用。因此，我们强调了植物物种多样性和BGEMF在塑造群落稳定性中的关键作用，并指出在持续气候变化的背景下，物种保护和BGEMF的改善是维持高寒生态系统的迫切需要。

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引用次数: 0

Urban green infrastructure for flood resilience: Runoff sink-source regime shifts and vegetation structure influences 城市绿色基础设施的抗洪能力：径流库源状态变化和植被结构的影响

IF 8 1区环境科学与生态学 Q1 GEOGRAPHY, PHYSICAL

Geography and Sustainability

Pub Date : 2025-10-01 Epub Date: 2025-07-03 DOI: 10.1016/j.geosus.2025.100333

Kejing Zhou , Fanhua Kong , Haiwei Yin , Georgia Destouni , Xueying Zhuang , Yulong Ban , Liding Chen

Over the period of rainfall, urban green infrastructures (UGI) function like a sponge by absorbing surface runoff as sinks; however, they will shift to sources once their runoff reduction capacities are exceeded. This dynamic of sink-source shifts, and its dependence on the vegetation structure, remain poorly understood, limiting the action of flood-resilient UGI strategies. This study employs MIKE SHE/11 model coupled with statistical analysis for such resolution. Across four scenarios ranging from light to heavy rainfall, we identified regime shifts in UGI system through the decreasing to increasing trends of sink fractions, typically occurring around 13–18 h after rainfall starts. Based on these regime shifts, we categorized the UGI system into vulnerable, reliable, and recoverable components, highlighting its heterogeneous performance. In addition, by examining the influence of vegetation structure on sink–source dynamics, we found that a higher probability of sinks under light rainfalls was associated with a greater leaf area index (LAI) and vegetation height standard deviation (VH_STD), while green volume (GV) and canopy height (CH) played a more prominent role under heavier rainfalls. Threshold effect analysis further revealed that, a high proportion of the recoverable parts met the thresholds of CH (82 %) and GV (85 %), whereas fewer reached the thresholds of LAI (15 %–19 %) and VH_STD (3 %–6 %). These findings underscore the importance of enhancing 3D vegetation configuration for UGI to adapt to flood impacts. Our study expects to provide actionable knowledge for understanding, quantification, and management of the runoff sink-source dynamics, informing UGI design and planning to achieve urban flood resilience.

在降雨期间，城市绿色基础设施（UGI）像海绵一样吸收地表径流作为汇；然而，一旦它们的径流减少能力超过，它们就会转移到水源。这种汇源转移的动态及其对植被结构的依赖仍然知之甚少，这限制了抗洪UGI策略的作用。本研究采用MIKE SHE/11模型结合统计分析对该分辨率进行求解。在从小雨到暴雨的四种情景中，我们确定了UGI系统的状态变化，通过汇分数的减少到增加趋势，通常发生在降雨开始后的13-18 h左右。基于这些变化，我们将UGI系统分为易受攻击的、可靠的和可恢复的组件，突出其异构性能。此外，通过研究植被结构对汇源动态的影响，我们发现，在小雨条件下，越高的汇概率与越大的叶面积指数（LAI）和植被高度标准差（VHSTD）相关，而在暴雨条件下，绿积（GV）和冠层高度（CH）的作用更为突出。阈值效应分析进一步表明，可恢复部件满足CH（82%）和GV（85%）阈值的比例较高，而达到LAI（15% - 19%）和VHSTD（3% - 6%）阈值的比例较低。这些发现强调了增强UGI三维植被配置以适应洪水影响的重要性。我们的研究希望为理解、量化和管理径流库源动态提供可操作的知识，为UGI设计和规划提供信息，以实现城市洪水抵御能力。

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