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Temporal changes in soil dissimilarity are driven by synergistic effects of tree types and geographical distance in city parks 城市公园树木类型和地理距离的协同效应驱动土壤差异的时间变化
IF 9.2 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-09-13 DOI: 10.1016/j.landurbplan.2025.105496
Saeed ur Rahman , Yucheng Bian , Xinxin Liu , Chang Zhao , Peiyuan Wang , Muhammad Khalid , Asad Rehman , Junfeng Cao , Noel Bruguera Amarán , Nan Hui
Urban parks play a crucial role in maintaining biodiversity and ecosystem functions within cities, making the study of their soil and microbial dynamics essential. This study investigates the temporal dynamics of soil properties and microbial community diversity across urban parks in Shanghai, exploring how intra-urban land-use characteristics, particularly park age and vegetation type, shape microbial community composition, with bacterial communities expected to respond more strongly to environmental homogenization and fungal communities, especially functional guilds, being more closely tied to vegetation traits. We observed distinct differences in soil physicochemical properties and microbial communities among city parks of different ages. Fungal communities maintain conserved distinction across tree types, while bacterial communities demonstrated remarkable functional and structural convergence. It is noteworthy that the changes in alpha and beta diversity exhibit inconsistent patterns across time, while the rate of convergence in beta diversity responses to intra-urbanization varies among taxonomic groups. The synergistic interaction between tree types composition and geographical distance is a key driver shaping soil microbial diversity, and neither factor alone is sufficient to account for significant diversity changes along the age gradient. Populations with high overall richness but low single-species abundance contributed more to alpha and beta diversity, including rare species and specialist species. Overall, this study highlights the importance of tree types composition in shaping microbial community diversity, providing valuable insights to complement intra-urban tree planting strategies.
城市公园在维持城市生物多样性和生态系统功能方面发挥着至关重要的作用,因此对其土壤和微生物动态的研究至关重要。本研究考察了上海城市公园土壤性质和微生物群落多样性的时间动态,探讨了城市内部土地利用特征(特别是公园年龄和植被类型)如何影响微生物群落组成,其中细菌群落对环境同质化的响应更强烈,真菌群落(特别是功能行会)与植被特征的联系更紧密。不同年限的城市公园土壤理化性质和微生物群落存在明显差异。真菌群落在不同树型之间保持着保守的差异,而细菌群落则表现出显著的功能和结构趋同。值得注意的是,α和β多样性随时间的变化规律不一致,而β多样性对城市化响应的收敛速度在不同分类类群之间存在差异。树种组成与地理距离之间的协同作用是影响土壤微生物多样性的关键驱动因素,任何一个因素都不足以解释土壤微生物多样性沿年龄梯度的显著变化。总体丰富度高、单物种丰富度低的种群对α和β多样性的贡献更大,包括稀有物种和特有种。总体而言,本研究强调了树木类型组成在塑造微生物群落多样性中的重要性,为补充城市内植树策略提供了有价值的见解。
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引用次数: 0
Exploring the role of ethnicity and culture in shaping greenspace practices: A qualitative study from Bristol, UK 探索种族和文化在塑造绿色空间实践中的作用:来自英国布里斯托尔的定性研究
IF 9.2 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-09-11 DOI: 10.1016/j.landurbplan.2025.105493
Andrew K. Palmer , Mark Riley , Laurence Jones , Sarah Clement , Karl L. Evans , Beth F.T. Brockett
Greenspaces provide multiple wellbeing and social benefits, yet ethnic minorities often have restricted engagement with these spaces which reinforces health inequalities. Addressing these requires a detailed understanding of the diversity of ethnic minorities’ perceptions, preferences, and practices relating to greenspaces. Through thematic analysis of interview and diary transcripts from 53 people from multiple ethnic minority groups in Bristol, UK, we identify various ways in which ethnicity and culture influence engagement with greenspaces. We find that cultural background and childhood experiences are particularly important in shaping attitudes towards greenspaces; transnational perspectives originating from cultural heritage and familial history influence how people perceive and adapt to UK greenspace conditions; and cultural considerations, perceived exclusion, and gender combine with intersectional identities to mediate experiences and engagement patterns. We draw from a novel integration of theoretical work on affordances with practices to theorise and synthesise these findings, contributing to understanding how cultural and social factors shape greenspace use. Our findings suggest that structured access initiatives, such as peer-led walking groups, and physical environment modifications, including zoning and washing facilities, can enhance the cultural inclusivity of greenspaces while addressing systemic barriers to engagement. These insights offer practical guidance for urban planners and greenspace managers seeking to create more equitable and inclusive spaces that reflect and serve increasingly diverse communities.
绿色空间提供了多种福利和社会效益,但少数民族经常限制与这些空间的接触,这加剧了健康不平等。解决这些问题需要详细了解少数民族对绿色空间的看法、偏好和实践的多样性。通过对来自英国布里斯托尔多个少数民族的53人的采访和日记记录的专题分析,我们确定了种族和文化影响绿色空间参与的各种方式。我们发现,文化背景和童年经历在塑造人们对绿色空间的态度方面尤为重要;源自文化遗产和家族历史的跨国视角影响着人们如何感知和适应英国的绿地条件;文化方面的考虑、感知到的排斥和性别与交叉身份相结合,调解了体验和参与模式。我们将理论工作与实践结合起来,对这些发现进行理论化和综合,有助于理解文化和社会因素如何影响绿色空间的使用。我们的研究结果表明,结构化的访问倡议,如同伴领导的步行小组,以及物理环境改造,包括分区和洗涤设施,可以增强绿色空间的文化包容性,同时解决参与的系统性障碍。这些见解为城市规划者和绿地管理者提供了实用的指导,他们希望创造更加公平和包容的空间,以反映和服务日益多样化的社区。
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引用次数: 0
Optimizing urban three-dimensional landscapes in potential development areas to mitigate urban heat island effect under shared socioeconomic pathways 共享社会经济路径下潜在开发区域城市三维景观优化与热岛效应缓解
IF 9.2 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-09-10 DOI: 10.1016/j.landurbplan.2025.105490
Shiyu Xiao , Jialyu He , Yao Yao , Xun Liang , Xia Li
The urban heat island (UHI) effect threatens human health. While optimizing the spatial structure of urban land use presents a promising strategy for UHI mitigation, few studies examined the feasibility of urban three-dimensional landscape optimization in potential development areas (PDA), resulting in unsuitable optimization results and computational inefficiency. To address these limitations, we develop a novel multi-objective optimization model for urban three-dimensional landscapes in PDA (3DLS-PO) that integrates the patch-generating simulation (PLUS) model and the particle swarm optimization (PSO) algorithm. The PLUS model first simulates the PDA in the future under different scenarios. The PSO algorithm then allocates urban land use in the PDA to mitigate the UHI effects with the explored nonlinear relationship between land surface temperature (LST) and urban two- and three-dimensional landscapes. We applied the 3DLS-PO model to the Tokyo Metropolitan Area (TMA) for 2030 under the shared socioeconomic pathway (SSP) scenarios. The SSP5 scenario achieves the maximum LST reduction of 5.18%, followed by SSP1 (4.60%) and SSP2 (2.34%). To mitigate the UHI effects in the TMA, high-rise buildings should be placed at the periphery of the TMA, low-rise buildings should be allocated to the suburbs, and green spaces should be scattered. The optimization results demonstrate substantial public health benefits, potentially preventing 3.01%-14.10% of heatstroke incidents in Tokyo. Incorporating the PDA also enhances the computational efficiency of the optimization process by 14 times. The 3DLS-PO model can provide support for addressing urban climate change.
城市热岛效应威胁着人类的健康。虽然优化城市土地利用空间结构是缓解城市热岛影响的一种有前景的策略,但很少有研究对潜在发展区(PDA)城市三维景观优化的可行性进行研究,导致优化结果不合适,计算效率低下。为了解决这些问题,我们在PDA中开发了一种新的城市三维景观多目标优化模型(3DLS-PO),该模型集成了补丁生成模拟(PLUS)模型和粒子群优化(PSO)算法。PLUS模型首先模拟了未来不同场景下的PDA。通过探索地表温度与城市二维和三维景观之间的非线性关系,利用PSO算法在PDA中分配城市土地利用以缓解城市热岛效应。我们将3DLS-PO模型应用于共享社会经济路径(SSP)情景下的2030年东京大都市区(TMA)。SSP5场景LST降低幅度最大,为5.18%,其次是SSP1(4.60%)和SSP2(2.34%)。为缓解城市热岛效应,应将高层建筑布置在城市边缘,将低层建筑布置在郊区,并分散绿化空间。优化结果显示出巨大的公共卫生效益,可能预防东京3.01%-14.10%的中暑事件。结合PDA还将优化过程的计算效率提高了14倍。3DLS-PO模型可为应对城市气候变化提供支持。
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引用次数: 0
The spatiotemporal patterns and dynamics of grassland established in the US conservation reserve program (CRP) 美国自然保护区(CRP)草地的时空格局与动态
IF 9.2 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-09-06 DOI: 10.1016/j.landurbplan.2025.105488
Shuchao Ye, Chaoqun Lu
The significant cropland expansion in the United States (US) has resulted in many environmental issues, such as soil erosion, biodiversity loss, soil and water pollution, etc. To mitigate adverse effects associated with cropland expansion, the United States Department of Agriculture (USDA) implemented the Conservation Reserve Program (CRP) in 1986, one of the US’s largest and most well-known acreage-reduction programs, to alleviate the environmental cost. However, the lack of time-series maps illustrating the spatial distribution of CRP constrains the evaluation of environmental benefits derived from the program. In this study, through integrating CRP statistics and multiple satellite-based land cover datasets, we developed a knowledge inference-based approach by considering CRP practices, contract period, and soil erosion effect to reconstruct CRP grassland maps. The map products developed here are designed to approximate the actual distribution of CRP grasslands, enabling quantitative assessment of CRP outcomes while reserving privacy and proprietary interests of individual farmers. The developed datasets cover the conterminous US from 1986 to 2020 with a resolution of 1 km by 1 km. Using CRP ground points across the US from the Rapid Carbon Assessment (RaCA) program in 2011, we validated the developed CRP map, achieving an overall accuracy of 90 % within a tolerance of 5 km. The results indicate CRP grasslands expanded from 0.60 Mha in 1986 to 10.19 Mha by 1995, then remained stable at around 10.00 Mha for the next decade. However, the area declined steadily to 5.78 Mha by 2020, driven by rising crop prices and the reduced CRP enrollment cap. Spatially, the areas with high CRP percentages were observed in the Midwest and Northwest, the west of the Southern Great Plains, and the north of the Northern Great Plains. In addition, the developed maps include two kinds of CRP grass practices, “the grasslands converted from the former cropland (CPCP)” and “the existing grasslands that were previously replanted from cropland (CPEG)”. We further found that 9–11 % and 12–24 % of CPCP and CPEG have enrolled in CRP twice during 1985–2020, respectively, which may lead to different potentials of CRP-associated carbon sequestration and greenhouse gas reduction compared with one-time or continuous CRP lands. Overall, the developed time-series maps can serve as a good reference to identify the spatiotemporal changes of CRP grasslands and to inform the modeling studies for assessing the CRP-associated environmental benefits and supporting future policymaking.
美国耕地的大量扩张导致了许多环境问题,如土壤侵蚀、生物多样性丧失、土壤和水污染等。为了减轻与农田扩张相关的不利影响,美国农业部(USDA)于1986年实施了美国最大和最知名的面积减少计划之一的保护储备计划(CRP),以减轻环境成本。然而,缺乏说明CRP空间分布的时间序列地图限制了对该计划产生的环境效益的评估。本研究通过整合CRP统计数据和多个基于卫星的土地覆盖数据集,提出了一种基于知识推理的方法,考虑CRP实践、契约期和土壤侵蚀效应,重建CRP草地图。这里开发的地图产品旨在近似CRP草原的实际分布,在保留个体农民隐私和专有利益的同时,能够定量评估CRP结果。开发的数据集覆盖1986年至2020年的美国连续区域,分辨率为1公里× 1公里。利用2011年快速碳评估(RaCA)项目中美国各地的CRP地面点,我们验证了开发的CRP地图,在5公里的公差范围内实现了90%的总体精度。结果表明,CRP草地从1986年的0.60 Mha扩大到1995年的10.19 Mha,并在未来10年稳定在10.00 Mha左右。然而,受作物价格上涨和CRP登记上限降低的影响,到2020年,CRP百分比稳步下降至5.78 Mha。从空间上看,CRP百分比高的地区分布在中西部和西北部、南部大平原西部和北部大平原北部。此外,已开发的地图还包括两种CRP草地实践,“从原农田转换的草地(CPCP)”和“以前从农田重新种植的现有草地(CPEG)”。在1985-2020年期间,CPCP和CPEG分别有9 - 11%和12 - 24%参与了两次CRP,这可能导致CPCP相关的碳固存和温室气体减排潜力与一次性或连续CRP土地不同。总体而言,所建立的时序图可以为识别CRP草地的时空变化提供良好的参考,并为CRP相关的环境效益评估和未来政策制定提供参考。
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引用次数: 0
Landscaping defensible space: Plant flammability testing informs recommendations to reduce community fire hazard 景观保护空间:植物可燃性测试为减少社区火灾危险提供建议
IF 9.2 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-08-30 DOI: 10.1016/j.landurbplan.2025.105483
Kristina Fauss , Joe V. Celebrezze , Robert Lloyd Fitch , Indra Boving , Rachel Dye , Max A. Moritz
The wildland urban interface (WUI) presents a unique planning challenge. Landscaped residential properties intersect with wild, fire-prone vegetation; however, WUI residents lack clear guidance on which plants pose higher or lower risk and how to manage vegetation to reduce fire hazard while also prioritizing landscaping design. This is largely due to the lack of information regarding how landscaping plants burn. This study provided a community-led approach to plant flammability testing, suggested an index to rank landscaping plant flammability, and offered landscaping guidance for residents of Southern California WUI communities. Community feedback revealed which ecosystem services (i.e., cultural: privacy) and plant species attributes (i.e., drought tolerance) were valued most by the community and helped identify common native species for flammability testing. Through laboratory flammability tests, interspecific differences in flammability were found as well as significant relationships between plant traits – hydration, branch, and leaf morphology – and flammability. Branching, mass, and drought stress were positively correlated with combustion intensity, whereas live fuel moisture (LFM) and stem surface area to volume ratio had a negative effect. These findings confirm the importance of minimizing plant mass near structures; carefully considering plant growth forms in planning; and maintaining healthy, hydrated plants in defensible space. With these considerations in mind, we discussed which defensible space zones could be best-suited for the tested plant species. Involving resident input and community horticulturalists in research direction allowed for targeted testing of species most relevant to the community of study and provided action-oriented collaborations with local stakeholders to improve fire-informed landscaping.
荒地城市界面(WUI)提出了一个独特的规划挑战。景观住宅与野生的、容易发生火灾的植被相交;然而,对于哪些植物具有较高或较低的风险,以及如何在优先考虑景观设计的同时管理植被以减少火灾危险,WUI居民缺乏明确的指导。这主要是由于缺乏关于景观植物如何燃烧的信息。本研究提供了一种社区主导的植物可燃性测试方法,提出了一种景观植物可燃性排名指标,并为南加州WUI社区的居民提供了景观指导。社区反馈揭示了社区最重视哪些生态系统服务(即文化:隐私)和植物物种属性(即耐旱性),并有助于确定常见的本地物种进行可燃性测试。通过实验室可燃性测试,发现了可燃性的种间差异以及植物性状-水化,分支和叶片形态-与可燃性之间的显着关系。分枝、质量和干旱胁迫与燃烧强度呈正相关,而活燃料水分(LFM)和茎表面积体积比与燃烧强度呈负相关。这些发现证实了尽量减少建筑物附近植物质量的重要性;在规划时仔细考虑植物的生长形式;在可防御的空间里保持健康、水分充足的植物。考虑到这些因素,我们讨论了哪些防御空间区域最适合被测试的植物物种。让居民和社区园艺师参与研究方向,可以对与研究社区最相关的物种进行有针对性的测试,并与当地利益相关者开展以行动为导向的合作,以改善了解火灾的景观。
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引用次数: 0
Research note: Surrounding landscape and local tree structure explain wear in boreal urban forests 研究说明:周边景观和当地树木结构解释了北方城市森林的磨损
IF 9.2 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-08-30 DOI: 10.1016/j.landurbplan.2025.105485
Aku Korhonen, Leena Hamberg
Natural urban green areas in cities are susceptible to degradation due to high levels of recreational use and trampling induced wear. The aim of this study was to relate the amount of wear (paths and worn ground) in boreal urban forests to landscape-scale and local-scale predictors to help assess risks associated with urban densification. Wear was measured in 73 forests in three urban centers in southern Finland and analyzed in relation to surrounding residential density, amount of nearby forest area, and local forest characteristics. Median observed worn cover was 12 % while the most affected sites were over 90 % worn. Higher residential density and smaller forest area had independent exacerbating effects on wear. Wear was also related to tree structure and tended to be larger in forest interiors than near the edge. Our findings showcase how landscape transformations in growing cities may translate into risks of ecological degradation in urban forests.
城市中的自然绿地容易因高水平的娱乐使用和踩踏引起的磨损而退化。本研究的目的是将北方城市森林的磨损量(路径和磨损地面)与景观尺度和局部尺度的预测因子联系起来,以帮助评估与城市密度相关的风险。在芬兰南部三个城市中心的73个森林中测量了磨损,并分析了与周围居住密度、附近森林面积和当地森林特征的关系。中位数观察到的磨损覆盖率为12%,而最受影响的部位磨损超过90%。较高的居住密度和较小的森林面积对磨损有独立的加剧作用。磨损也与树木结构有关,在森林内部比在边缘更大。我们的研究结果表明,发展中城市的景观变化可能转化为城市森林生态退化的风险。
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引用次数: 0
Evaluating the role of urban trees on building energy use: a global literature review 评估城市树木对建筑能源使用的作用:全球文献综述
IF 9.2 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-08-28 DOI: 10.1016/j.landurbplan.2025.105475
Chen Yang , Mengju Xie , Thushini Mendis
As the global energy crisis and climate change exacerbate urban heat island effects, trees offer significant potential to reduce energy demand by shading solar radiation and improving microclimates. However, there is a lack of comprehensive global reviews on the effects of urban trees on building energy use. This study aims to address the existing research gap by systematically reviewing peer-reviewed literature to investigate the impact of urban trees on building energy use across global climate zones, analyzing the mechanisms and pathway combinations through which trees influence energy use, and exploring optimal tree placement strategies for building energy performance optimization. Results show that trees can reduce cooling energy use by up to 60 %, with savings ranging from 31.75 % in equatorial climates to 4.78 % in snow climates. The impact on heating energy use varies widely, from −63.8 % to 45 %, depending on climate, tree species, and placement. Simulation studies analyze more complex pathway combinations (9 types) compared to empirical research (4 types), revealing methodological gaps in empirical studies of these mechanisms. Spatial analysis shows latitude-dependent optimization patterns, where for cooling, 38.5 % of studies recommend west-side planting while 23 % suggest south-side planting (though less effective at low latitudes). The optimal planting distances cluster at 3 m and 5 m for both cooling and heating effects, with high-latitude cooling extending to 9–12 m spacing. Future research should integrate interdisciplinary approaches, AI modeling, and high-resolution monitoring data to optimize tree-building energy interactions.
随着全球能源危机和气候变化加剧城市热岛效应,树木通过遮阳太阳辐射和改善小气候提供了巨大的潜力,以减少能源需求。然而,关于城市树木对建筑能源使用的影响,缺乏全面的全球综述。本研究旨在通过系统梳理同行评议文献,探讨全球气候区城市树木对建筑能源利用的影响,分析树木影响能源利用的机制和途径组合,探索建筑能源性能优化的最佳植树策略,以弥补现有研究空白。结果表明,树木可以减少高达60%的冷却能源使用,从赤道气候的31.75%到雪气候的4.78%不等。对供暖能源使用的影响差异很大,从- 63.8%到45%不等,具体取决于气候、树种和地理位置。与实证研究(4种类型)相比,模拟研究分析了更复杂的途径组合(9种类型),揭示了这些机制的实证研究在方法上的差距。空间分析显示了与纬度相关的优化模式,其中38.5%的研究建议在西侧种植,而23%的研究建议在南侧种植(尽管在低纬度地区效果较差)。制冷和制热效果的最佳种植距离集中在3 m和5 m,高纬度的制冷间距延伸到9-12 m。未来的研究应整合跨学科方法、人工智能建模和高分辨率监测数据,以优化树木建筑的能源相互作用。
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引用次数: 0
Defining ‘adequate’ tree protection: Meeting urban canopy targets requires careful retention of mature trees 定义“充分”的树木保护:达到城市树冠的目标需要谨慎地保留成熟的树木
IF 9.2 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-08-27 DOI: 10.1016/j.landurbplan.2025.105484
Thami Croeser , Wolfgang W. Weisser , Joe Hurley , Thomas Rötzer , Leila Parhizgar , Qian (Chayn) Sun , Sarah A. Bekessy
Canopy cover is increasingly recognised as an important aspect of the urban landscape, and as a result urban forestry plans have been adopted in many cities globally. These are often built around ambitious canopy cover targets, with a goal to keep cities cool and improve their amenity while delivering co-benefits like health improvements, flood reduction and enhanced biodiversity. Canopy targets and tree planting have tended to receive more attention than another critical determinant of canopy expansion: keeping the trees alive once they are planted. In this study, we use a model to examine how varying tree removal rates influences the long-term canopy cover provided by street trees, considering both typical policy timeframes and projections through the end of the century. The model uses allometrics from real urban trees in four cities to project canopy growth under a wide range of removal rates, for a wide range of potential urban forest characteristics. We find that retention of mature and maturing street trees is consistently critical, with removal rates exceeding 3% per annum generally associated with much lower canopy progress (and usually very poor results). The model’s outputs demonstrate how cities can build a clear case for better-integrated urban governance to ensure these challenging threshold values are avoided.
树冠覆盖日益被认为是城市景观的一个重要方面,因此全球许多城市都采用了城市林业计划。这些项目通常围绕着雄心勃勃的树冠覆盖目标而建,其目标是保持城市凉爽,改善城市舒适度,同时带来改善健康、减少洪水和增强生物多样性等共同效益。树冠目标和树木种植往往比树冠扩张的另一个关键决定因素——在种植后保持树木的存活——受到更多的关注。在这项研究中,我们使用一个模型来研究不同的树木砍伐率如何影响行道树提供的长期树冠覆盖,同时考虑到典型的政策时间框架和到本世纪末的预测。该模型使用来自四个城市真实城市树木的异速测量来预测在广泛的采伐率下的冠层生长,以获得广泛的潜在城市森林特征。我们发现,成熟和成熟行道树的保留一直是至关重要的,每年超过3%的砍伐率通常与冠层进展低得多有关(通常是非常差的结果)。该模型的结果表明,城市可以为更好地整合城市治理建立一个清晰的案例,以确保避免这些具有挑战性的阈值。
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引用次数: 0
Unpacking Outcomes: A quasi-experimental study on the effectiveness of China’s major function-oriented zone planning 解包结果:中国主体功能区规划有效性的准实验研究
IF 9.2 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-08-25 DOI: 10.1016/j.landurbplan.2025.105482
Kaiyang Jia , Sujuan Zhong , Xianjin Huang
The competing demands for land resources among urbanization, food production, and ecological preservation present a critical challenge for sustainable development in developing nations. China’s Major Function-Oriented Zone Planning (MFZP), launched in 2010, represents a pioneering national-scale zoning planning to address these competing interests. This study provides the first comprehensive empirical assessment of MFZP’s effectiveness through a quasi-experimental analysis using county-level panel data from 2000 to 2020. Employing a Propensity Score Matching with Difference-in-Difference approach, we compare land development patterns between restricted and key development zones with similar baseline characteristics. Results demonstrate that MFZP successfully achieved its primary objective: restricted development zones exhibited significantly lower development intensity compared to matched key development zones, without showing significant negative impacts on per capita GDP growth. The effectiveness of the plan implementation varies notably across China’s economic regions and among restricted zones with different functional priorities. These findings validate the feasibility of large-scale spatial planning in balancing development needs and offer evidence-based insights for developing countries seeking to implement similar land-use management strategies.
城市化、粮食生产和生态保护三者对土地资源的竞争对发展中国家的可持续发展提出了严峻的挑战。中国于2010年推出的主体功能区规划(MFZP)是解决这些利益冲突的全国性分区规划的先驱。本研究利用2000 - 2020年的县级面板数据,首次对保税区的有效性进行了准实验分析。采用倾向得分匹配和差中差方法,我们比较了具有相似基线特征的限制开发区和重点开发区之间的土地开发模式。结果表明,MFZP成功地实现了其主要目标:限制开发区的开发强度明显低于匹配的重点开发区,但对人均GDP增长没有显著的负面影响。规划实施的效果在中国不同经济区域和不同功能重点的限制区域之间存在明显差异。这些发现证实了大规模空间规划在平衡发展需求方面的可行性,并为寻求实施类似土地使用管理战略的发展中国家提供了基于证据的见解。
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引用次数: 0
Improving an African urban mosaic for insect pollinators through increased floral diversity and better functional connectivity 通过增加植物多样性和改善功能连通性,改善非洲昆虫传粉媒介的城市马赛克
IF 9.2 1区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2025-08-20 DOI: 10.1016/j.landurbplan.2025.105480
Ibukun Balogun , James S. Pryke , Temitope Kehinde , Michael J. Samways
Small African urban areas are composed of an urban core, farms, and natural areas. This mosaic has high potential for providing refuge for urban biodiversity, especially for beneficial groups like insect pollinators. Insect pollinators are important for agricultural yield, yet are in decline in many parts of the world. However, to date, African urban areas as a refuge for these pollinators are poorly explored, despite increasing urbanization and agricultural intensification in recent decades. Here, we investigate how insect pollinator diversity differs between gardens, agricultural areas, and natural areas in a southern African urban mosaic. We also explore the influence of urban green spaces on the taxonomic diversity of insect pollinators. Direct observation and pan traps were used for assessing the diversity of pollinators, and we measured associated environmental, floral, and landscape variables. Results indicated similar pollinator diversity between agricultural and natural areas for some taxa, and between agricultural areas and the urban gardens for other taxa. Significantly, floral variables were the most important predictors of the pollinators, with the enhancement of floral diversity ameliorating the effects of urbanization and agricultural intensification. In contrast, landscape context was less important, although significant, for insect pollinators in these mosaics. Results, although varying significantly among taxa, suggest that agroecological farming may serve as a buffer from the effects of urbanization for natural areas and reduce the effect of urbanization on pollinators in urban gardens by providing the necessary resources. Here, we show that floral variables are important for improving urban green planning. This could be achieved by the establishment of more flowering plants, especially in human-modified areas such as semi-urban agricultural areas and urban gardens.
非洲的小城市地区由城市核心、农场和自然区域组成。这种马赛克具有很高的潜力,为城市生物多样性提供避难所,特别是对昆虫传粉者等有益群体。昆虫传粉媒介对农业产量很重要,但在世界许多地方,昆虫传粉媒介的数量正在减少。然而,尽管近几十年来城市化和农业集约化程度不断提高,但迄今为止,非洲城市地区作为这些传粉媒介的避难所尚未得到充分探索。在这里,我们调查昆虫传粉者的多样性如何在花园,农业地区和自然地区在南部非洲城市马赛克。我们还探讨了城市绿地对传粉昆虫分类多样性的影响。采用直接观察和捕集盘法评估传粉媒介的多样性,并测量了相关的环境、花卉和景观变量。结果表明,一些类群的传粉者多样性在农业区与自然区相似,而在其他类群中,传粉者多样性在农业区与城市园林区相似。花型变量是最重要的传粉媒介预测因子,花型多样性的增强可以缓解城市化和农业集约化的影响。相比之下,景观背景对这些马赛克中的昆虫传粉者来说不太重要,尽管很重要。结果表明,生态农业可以缓冲城市化对自然区域的影响,并通过提供必要的资源来减少城市化对城市园林传粉者的影响。本研究表明,花卉变量对改善城市绿色规划具有重要意义。这可以通过种植更多的开花植物来实现,特别是在人类改造的地区,如半城市农业区和城市花园。
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Landscape and Urban Planning
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