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Assessment of Thermal Vulnerability and Analysis of Influencing Factors in Urban Functional Areas of Foshan City,China 认领 引用 被引量：1
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作者 WANG Xinyue YANG Jun +4 位作者 ZHANG Rui XIN Jiaxing YU Wenbo REN Jiayi XIAO Xiangming 《Chinese Geographical Science》 SCIE CSCD 2025年第4期852-866,共15页
To adapt to national climate change strategies,understanding the thermal vulnerability of urban functional zones(UFZs)is critical for enhancing the livability and sustainable development of cities.We address the limit... To adapt to national climate change strategies,understanding the thermal vulnerability of urban functional zones(UFZs)is critical for enhancing the livability and sustainable development of cities.We address the limitations of existing thermal vulnerability assessments by incorporating human perception into the analysis.Specifically,we introduce the sky openness index to reflect human perception of the thermal environment and examine variations in thermal vulnerability across different UFZs.Using the Extreme Gradient Boosting(XGBoost)-SHapley Additive exPlanations(SHAP)model,we analyze the contributions of 2D and 3D urban form indicators to thermal vulnerability and link these contributions to the unique needs and vulnerability characteristics of UFZs of Foshan City,China in 2023.The results reveal that:1)high-value heat-fragile areas(1.74–2.00]constitute 10.42%of Foshan City;2)traffic zone and publiccommercial zone exhibit the highest levels of thermal vulnerability;and 3)building height and the normalized building index are the most influential factors,with contributions of|0.06|and|0.03|,respectively.We provide a scientific foundation for developing governance strategies to promote urban resilience. 展开更多
关键词 heat vulnerability urban functional zones Extreme Gradient Boosting(XGBoost)-SHapley Additive exPlanations(SHAP)model urban thermal environment urban morphological indicators Foshan City,China
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Combined effects of building and tree on the diurnal thermal environment in urban functional zones from 2D and 3D perspectives 认领 引用
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作者 Quanbei Deng Miaomiao Xie Yanqiu Chen 《Ecological Frontiers》 CSCD 2025年第4期1069-1082,共14页
Urban buildings and trees are not only core components of grey-green infrastructure but also key means for alleviating the urban heat island(UHI)effect via urban landscape design and management.However,due to data ava... Urban buildings and trees are not only core components of grey-green infrastructure but also key means for alleviating the urban heat island(UHI)effect via urban landscape design and management.However,due to data availability,few studies have used high-resolution remote sensing data and geographic information data to explore the combined effects of building and tree on diurnal land surface temperature(LST)in different urban functional zones(UFZs)from two-and three-dimensional perspectives.Therefore,this study employed Pearson correlation analysis and boosted regression tree(BRT)model to investigate the relationships between 2D and 3D morphology of building and tree and diurnal LST across UFZs,using Beijing in China as a case study.Results indicate that:(1)Significant differences exist in diurnal distribution of LST between various UFZs,so different objects should be focused on in the regulation of the diurnal urban thermal environment.(2)Dominant factors influencing LST and their marginal effect patterns vary and largely depend on observation times and UFZ contexts.(3)In all UFZs,the impact of 2D morphology on LST is far greater than that of 3D morphology during the day,and vice versa at night.Detailed 3D urban characteristics can effectively improve the interpretation of urban morphology for LSTs at the UFZ scale,with an average optimization level of 22%.(4)The warming or cooling thresholds of dominant factors differ across UFZs.Furthermore,the diurnal marginal effect patterns of dominant factors in certain UFZs exhibit opposing trends.For such zones,stakeholders need to combine the threshold ranges at which the dominant factors produce cooling effects during day and night,and prudently consider the diurnal thermal comfort trade-offs based on the primary function of the specific location.These findings provide fresh insights into the impact of 3D urban features on diurnal LST and have significant implications for climate resilience planning and UHI mitigation strategies from diurnal and UFZ perspectives. 展开更多
关键词 Diurnal land surface temperature Landscape metrics 3D urban morphology Urban functional zone Surface urban heat island
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Multi-source Data-driven Identification of Urban Functional Areas:A Case of Shenyang,China 认领 引用 被引量：9
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作者 XUE Bing XIAO Xiao +2 位作者 LI Jingzhong ZHAO Bingyu FU Bo 《Chinese Geographical Science》 SCIE CSCD 2023年第1期21-35,共15页
Urban functional area(UFA)is a core scientific issue affecting urban sustainability.The current knowledge gap is mainly reflected in the lack of multi-scale quantitative interpretation methods from the perspective of ... Urban functional area(UFA)is a core scientific issue affecting urban sustainability.The current knowledge gap is mainly reflected in the lack of multi-scale quantitative interpretation methods from the perspective of human-land interaction.In this paper,based on multi-source big data include 250 m×250 m resolution cell phone data,1.81×105 Points of Interest(POI)data and administrative boundary data,we built a UFA identification method and demonstrated empirically in Shenyang City,China.We argue that the method we built can effectively identify multi-scale multi-type UFAs based on human activity and further reveal the spatial correlation between urban facilities and human activity.The empirical study suggests that the employment functional zones in Shenyang City are more concentrated in central cities than other single functional zones.There are more mix functional areas in the central city areas,while the planned industrial new cities need to develop comprehensive functions in Shenyang.UFAs have scale effects and human-land interaction patterns.We suggest that city decision makers should apply multi-sources big data to measure urban functional service in a more refined manner from a supply-demand perspective. 展开更多
关键词 human-land relationship multi-source big data urban functional area identification method Shenyang City
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Rainfall-runoff risk characteristics of urban function zones in Beijing using the SCS-CN model 认领 引用 被引量：5
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作者 姚磊 卫伟 +2 位作者 于洋 肖峻 陈利顶 《Journal of Geographical Sciences》 SCIE CSCD 2018年第5期656-668,共13页
Urbanization significantly increases the risk of urban flooding. Therefore, quantitative study of urban rainfall-runoff processes can provide a scientific basis for urban planning and management. In this paper, the bu... Urbanization significantly increases the risk of urban flooding. Therefore, quantitative study of urban rainfall-runoff processes can provide a scientific basis for urban planning and management. In this paper, the built-up region within the Fifth Ring Road of Beijing was selected as the study area. The details of land cover and urban function zones(UFZs) were identified using GIS and RS methods. On this basis, the SCS-CN model was adopted to analyze the rainfall-runoff risk characteristics of the study area. The results showed that:(1) UFZs within different levels of runoff risk varied under different rainfall conditions. The area ratio of the UFZs with high runoff risk increased from 18.90%(for rainfall return period of 1 a) to 54.74%(for period of 100 a). Specifically, urban commercial areas tended to have the highest runoff risk, while urban greening spaces had the lowest.(2) The spatial characteristics of the runoff risks showed an obvious circular distribution. Spatial cluster areas with high runoff risk were mainly concentrated in the center of the study area, while those with low runoff risk were mainly distributed between the fourth and fifth ring roads. The results indicated that the spatial clustering characteristic of urban runoff risk and runoff heterogeneity among different UFZs should be fully considered during urban rainwater management. 展开更多
关键词 SCS-CN model urban function zone spatial cluster runoff risk
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Integrating urban morphology and land surface temperature characteristics for urban functional area classification 认领 引用 被引量：7
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作者 Bin Li Yefei Liu +4 位作者 Hanfa Xing Yuan Meng Guang Yang Xiaoding Liu Yaolong Zhao 《Geo-Spatial Information Science》 SCIE EI CSCD 2022年第2期337-352,共16页
The classification of urban functional areas plays an important role in urban planning and resource management.Although previous studies have confirmed that different urban func-tional areas have different morphologic... The classification of urban functional areas plays an important role in urban planning and resource management.Although previous studies have confirmed that different urban func-tional areas have different morphological structures and Land Surface Temperature(LST)characteristics,these two types of characteristics have rarely been fully integrated and used for functional area classification.In this paper,a new framework for classifying urban functional areas is proposed by combining urban morphological features and LST features.First,metrics are constructed from three levels,namely,building,road and region,which are used to portray urban morphology;LST is retrieved using thermal infrared remote sensing to reflect LST features with four metrics:the average temperature,maximum temperature,temperature difference and standard deviation of temperature.Then,the functional areas are classified into four categories:service/public land,commercial land,residential land and industrial land.A random forest algorithm is used to effectively fuse the features of these two categories and classify the functional areas.The effectiveness of the proposed framework is tested in the study area of Shenzhen City,Guangdong Province.The results show that the combined classification accuracy of the proposed classification method is 0.85,which is 0.26 higher than that of the classification model based on urban morphology and 0.1 higher than that of the classification model based on LST features.The proposed framework verifies that the integration of LST features into urban functional area classification is reliable and effectively combines urban morphology and LST features for functional area classification. 展开更多
关键词 Urban function classification urban morphology random forest Land Surface Temperature(LST)
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The Wuhu Model:Sustainable Urban Renewal 认领 引用
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作者 ZHOU LIN 《China Today》 2026年第1期56-59,共4页
In Wuhu,urban renewal has not only transformed the development process,but improved people’s lives.DURING the 14th Five-Year Plan period(2021-2025),urban renewal has served as a crucial measure to promote high-qualit... In Wuhu,urban renewal has not only transformed the development process,but improved people’s lives.DURING the 14th Five-Year Plan period(2021-2025),urban renewal has served as a crucial measure to promote high-quality urban development and continuously meet people’s growing aspirations for a better life.Wuhu,in central China’s Anhui Province,has consistently enhanced its urban functions and services to build a modern,people-oriented city that is innovative,livable,beautiful,resilient,and smart. 展开更多
关键词 beauty resilience people oriented city urban development enhanced its urban functions services sustainable urban renewal innovation livability
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Recognizing mixed urban functions from human activities using representation learning methods 认领 引用 被引量：6
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作者 Junjie Hu Yong Gao +1 位作者 Xuechen Wang Yu Liu 《International Journal of Digital Earth》 SCIE EI 2023年第1期289-307,共19页
When various urban functions are integrated into one location,they form a mixture of functions.The emerging big data promote an alternative way to identify mixed functions.However,current methods are largely unable to... When various urban functions are integrated into one location,they form a mixture of functions.The emerging big data promote an alternative way to identify mixed functions.However,current methods are largely unable to extract deep features in these data,resulting in low accuracy.In this study,we focused on recognizing mixed urban functions from the perspective of human activities,which are essential indicators of functional areas in a city.We proposed a framework to comprehensively extract deep features of human activities in big data,including activity dynamics,mobility interactions,and activity semantics,through representation learning methods.Then,integrating these features,we employed fuzzy clustering to identify the mixture of urban functions.We conducted a case study using taxiflow and social media data in Beijing,China,in whichfive urban functions and their correlations with land use were recognized.The mixture degree of urban functions in each location was revealed,which had a negative correlation with taxi trip distance.The results confirmed the advantages of our method in understanding mixed urban functions by employing various representation learning methods to comprehensively depict human activities.This study has important implications for urban planners in understanding urban systems and developing better strategies. 展开更多
关键词 Mixed urban function human activity representation learning spatiotemporal data mining
Identifying urban functional zones by capturing multi-spatial distribution patterns of points of interest 认领 引用 被引量：2
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作者 Quan Qin Shishuo Xu +1 位作者 Mingyi Du Songnian Li 《International Journal of Digital Earth》 SCIE EI 2022年第1期2468-2494,共27页
Urban Functional Zone(UFZ)identification is vital for urban planning,renewal,and development.Point of Interest(POI),as one of the most popular data in UFZ studies,is transformed into a geo-corpus under specific sampli... Urban Functional Zone(UFZ)identification is vital for urban planning,renewal,and development.Point of Interest(POI),as one of the most popular data in UFZ studies,is transformed into a geo-corpus under specific sampling strategies,which can be used with Natural Language Processing(NLP)technology to extract geo-semantic features and identify UFZs.However,existing studies only capture a single spatial distribution pattern of POIs,while ignoring the other spatial distribution information.In this paper,we developed an integrated geo-corpus construction approach to capture multi-spatial distribution patterns of POIs that were represented by different modal POI embeddings.Subsequently,random forest model was leveraged to classify UFZs based on those embeddings.A set of combination experiments were designed for performance validation.The results show that our proposed method can effectively identify UFZs with an accuracy of 72.9%,with an improvement of 8.5%compared to the baseline methods.The outcome of this study will help urban planners to better understand UFZs through investigating the integrated spatial distribution patterns of POIs embedded in UFZs. 展开更多
关键词 Urban functional zone point of interest spatial distribution pattern natural language processing word2vec
Exploring spatiotemporal patterns of geosocial media data for urban functional zone identification 认领 引用 被引量：4
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作者 Aleta Mawuenyegah Songnian Li Shishuo Xu 《International Journal of Digital Earth》 SCIE EI 2022年第1期1305-1325,共21页
Urban Functional Zones(UFZs)can be identified by measuring the spatiotemporal patterns of activities that occur within them.Geosocial media data possesses abundant spatial and temporal information for activity mining.... Urban Functional Zones(UFZs)can be identified by measuring the spatiotemporal patterns of activities that occur within them.Geosocial media data possesses abundant spatial and temporal information for activity mining.Identifying UFZs from geosocial media data aids urban planning,infrastructure,resource allocation,and transportation modernization in the complex urban system.In this work,we proposed an integrated approach by combining the spatiotemporal clustering method with a machine learning classifier.The spatiotemporal clustering method was used to mine the spatiotemporal patterns of activities,of which the distinctive features were extracted as inputs into a machine learning classifier for UFZ identification.The results show that more than 80%of the UFZs can be correctly identified by our proposed method.It reveals that this work serves as a functional groundwork for future studies,facilitating the understanding of urban systems as well as promoting sustainable urban development. 展开更多
关键词 Urban functional zones geosocial media twitter spatiotemporal clustering random forest
The functional evolution and system equilibrium of urban and rural territories 认领 引用 被引量：14
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作者 FAN Jie LI Sisi +4 位作者 SUN Zhongrui GUO Rui ZHOU Kan CHEN Dong WU Jianxiong 《Journal of Geographical Sciences》 SCIE CSCD 2022年第7期1203-1224,共22页
The coordinated development of urban and rural territorial systems has long been a scientific issue of concern in geography and socioeconomic development in China.Based on Territorial Function Theory,this paper establ... The coordinated development of urban and rural territorial systems has long been a scientific issue of concern in geography and socioeconomic development in China.Based on Territorial Function Theory,this paper establishes a theoretical framework to support the coordinated development of urban and rural territorial systems,analyzes the trend of functional evolution,discusses the impact of efficient allocation and orderly element flow on system equivalence development,and puts forward approaches and policy suggestions for equilibrium development in the future.The main conclusions are as follows:(1)The evolution of urban and rural territorial functions has experienced four stages:rural to rural,rural to urban transition,rural to urban,and urban to urban.In this process,territorial functions have been developed to be hierarchical and advanced.(2)Functional evolution enables urban and rural comparative advantages to be transformed from value difference to value equivalence.Increasing the flow intensity and reconstructing the flow space have become the necessary conditions for the coordination of development.(3)Land is the most important resource in China,and land system reform is the key to achieving equivalence development of urban and rural territorial systems,thereby determining the future equilibrium development of the two systems. 展开更多
关键词 urban territorial function rural territorial function urban territorial system rural territorial system system equilibrium urban and rural equivalence development land system reform
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How urban land expansion alters terrain in mountainous and hilly areas:An empirical study in China 认领 引用
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作者 Zihao Zhou Yimin Chen 《Geography and Sustainability》 CSCD 2025年第4期257-270,共14页
Large-scale urban land expansion in mountainous and hilly areas(UEMH)has significantly altered the terrain in many Chinese cities,leading to various environmental and urban challenges.Despite its importance,there is l... Large-scale urban land expansion in mountainous and hilly areas(UEMH)has significantly altered the terrain in many Chinese cities,leading to various environmental and urban challenges.Despite its importance,there is limited nation-scale research that reveals the amount and the spatial variations of UEMH-induced terrain alteration.This research integrates the Global Annual Urban Dynamics dataset,the Global Basic Landform Unit dataset,the TanDEM-X DEM Change Map(DCM)dataset,Baidu Points-of-Interest(POI),and other auxiliary datasets to conduct a comprehensive analysis of terrain alteration induced by UEMH in China from 2012 to 2020.The results indicate that the country-wide UEMH-induced terrain alteration reached approximately 13 billion m3,which is about 100 times the volume of Hangzhou West Lake,and terrain alteration volume in over 300 counties exceeded 10 million m3.The Southwest and Southeast regions,which are ecologically sensitive and critical,feature the greatest alteration in terms of area and volume.The most significant terrain alteration in terms of intensity is observed in the Southwest and Hengduan Mountain Area.Additionally,there are significant spatial variations in the contributions of different urban functional zones to terrain alteration.Our findings indicate that urban land expansion in mountains and hills has significantly altered terrain in some regions of China,necessitating customized urban planning strategies for better managing mountainous urban land expansion and governance policies to address the geological,ecological,and urban development challenges. 展开更多
关键词 Urban land expansion Terrain alteration Tandem-X DEM change map Urban functional zones
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Spatial Identification of Urban Ecological Function on the North Slope of Qinling Mountains Based on Ecological Sensitivity—A Case Study in Baoji, China 认领 引用 被引量：1
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作者 Pei Wang Langong Hou Xiaoqin He 《Journal of Geoscience and Environment Protection》 2021年第5期95-117,共23页
Since the 17th National Congress of the Communist Party of China, ecological civilization has been the key construction goal in China, which has a profound impact on the process of urbanization. In recent years, with ... Since the 17th National Congress of the Communist Party of China, ecological civilization has been the key construction goal in China, which has a profound impact on the process of urbanization. In recent years, with the rapid development of urbanization and unreasonable land development and utilization, the ecological environment has deteriorated sharply, and the stability of ecological environment has always been a difficult problem in the process of regional development. The spatial division of urban ecological function can be divided into different types of spatial utilization according to the fragile state of ecological environment, which not only guarantees urban construction but also maintains the ecological environment health, and has great economic benefits and ecological value in formulating regional development strategies and ecological protection. In this paper, from four perspectives of “land, water, human and forest”, eight factors affecting ecological sensitivity were selected, and GIS spatial superposition method was used to conduct qualitative and quantitative analysis on the ecological sensitivity of Baoji City, and the evaluation results of single factor ecological sensitivity and comprehensive ecological sensitivity were obtained. The areas with different ecological sensitivity are divided into extremely sensitive areas, highly sensitive areas, moderately sensitive areas, slightly sensitive areas and non-sensitive areas. The research shows that the proportion of extreme, high, moderate, mild and insensitive areas in Baoji City is 7.32%, 10.57%, 22.25%, 42.91% and 16.95% respectively. Finally, the areas with different sensitivity grades are identified as three types of urban ecological function areas: ecological conservation area, ecological coordinated moderate utilization area and ecological suitable construction area, so as to provide scientific theoretical basis for urban construction and land use optimization in Baoji City. 展开更多
关键词 Baoji City Coefficient of Variation Method Ecological Sensitivity Urban Ecological Function Space
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An integrated approach to evaluation on ecological service functions for urban green space and its application 认领 引用
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作者  Hu Dan,Wang Ru songResearch Center for Eco Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China 《Journal of Environmental Sciences》 SCIE CAS 1998年第3期61-69,共9页
This methodological investigation deals with measurement and valuation of ecological service functions for urban green space. Social, economic and ecological dimensions for such types of function were analyzed and a c... This methodological investigation deals with measurement and valuation of ecological service functions for urban green space. Social, economic and ecological dimensions for such types of function were analyzed and a concept “integrated ecological service functions” (IESF) was put forward for evaluation. Based upon this conceptual approach, an index system for measuring IESF for urban green space was established. With a methodological integration of fuzzy mathematics, decision making analysis and Delphi method, an AHP fuzzy evaluation techniques for IESF for urban green space, called AFIFUG method, was developed. Such a method has been directly applied to the land use strategic planning of Tianjin out ring green belt(TOGB), and its analysis results have been successfully put into operation. 展开更多
关键词 ecological evaluation integrated ecological service functions urban green space.
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数字经济发展对黄河流域城市能级影响机制研究 认领 引用 被引量：1
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作者 魏伟 金成功 张伟 《郑州大学学报（理学版）》 CAS 北大核心 2026年第3期1-9,共9页
为量化数字经济对黄河流域城市能级的影响,构建了数字经济和城市能级水平的综合评价体系,采用熵权法分别测度2012—2022年黄河流域数字经济和城市能级发展水平;运用固定效应模型和中介效应模型分析了黄河流域数字经济影响城市能级的传... 为量化数字经济对黄河流域城市能级的影响,构建了数字经济和城市能级水平的综合评价体系,采用熵权法分别测度2012—2022年黄河流域数字经济和城市能级发展水平;运用固定效应模型和中介效应模型分析了黄河流域数字经济影响城市能级的传导路径,并进一步使用门槛效应模型研究数字经济对城市能级的作用机制。结果表明:1)黄河流域数字经济和城市能级发展水平整体呈增长趋势,数字经济赋能城市能级提升;2)数字经济可增加城市人均科研经费投入,进而促进城市能级提升;3)数字经济对城市能级提升的影响呈非线性。 展开更多
关键词 黄河流域 数字经济 城市能级 中介分析 门槛效应
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西部陆海新通道沿线城市网络时空演化特征与优化路径 认领 引用 被引量：1
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作者 宗会明 王楚雯 +1 位作者 张大鹏 张雪 《经济地理》 CSSCI CSCD 北大核心 2026年第1期67-75,共9页
西部陆海新通道沿线地区城市网络正持续发育,其结构特征和演化规律尚待探索。文章以西部陆海新通道沿线地区162个城市为研究对象,基于上市公司总部—分支机构数据构建2003—2023年城市关联网络,系统解析其网络结构演化特征与节点功能分... 西部陆海新通道沿线地区城市网络正持续发育,其结构特征和演化规律尚待探索。文章以西部陆海新通道沿线地区162个城市为研究对象,基于上市公司总部—分支机构数据构建2003—2023年城市关联网络,系统解析其网络结构演化特征与节点功能分配规律。研究发现:(1)西部陆海新通道沿线地区城市网络整体从离散型网络向强交互性复杂网络系统转变;(2)网络层级结构日益完善,由“双核驱动”向“多核并驱”转变,初步形成以省会城市联系为主导的轴辐式网络,核心—边缘结构与路径依赖特征明显;(3)多数城市在重要性与控制力上表现一致,大部分省会城市长期居于核心高控制力地位,战略枢纽城市与新兴产业城市的功能提升显著;(4)网络社区空间形态逐渐从高度碎片化向边界清晰的板块化演化,空间融合趋势加强,陆海联动格局正逐步深化。基于研究结论,文章提出了西部陆海新通道沿线地区城市网络的优化路径,以期为推动新通道沿线地区城市实现高质量发展和协同治理提供理论支撑与实践指引。 展开更多
关键词 西部陆海新通道 城市网络 企业关联 社会网络分析 城市功能 陆海联动 “一带一路”倡议
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Assessing multi-spatial driving factors of urban land use transformation in megacities:a case study of Guangdong-Hong Kong-Macao Greater Bay Area from 2000 to 2018 认领 引用 被引量：1
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作者 Yuan Meng Man Sing Wong +2 位作者 Mei-Po Kwan Jamie Pearce Zhiqiang Feng 《Geo-Spatial Information Science》 SCIE EI CSCD 2024年第4期1090-1106,共17页
Rapid morphological and socioeconomic changes have accelerated the urbanization process and urban land use transformation in China.Megacities comprise clusters of urban cities and exhibit both newly formed and well-de... Rapid morphological and socioeconomic changes have accelerated the urbanization process and urban land use transformation in China.Megacities comprise clusters of urban cities and exhibit both newly formed and well-developed urban land use development beyond administrative boundaries.It is necessary to distinguish the changing effects of spatial-varying driving factors on newly formed urban land uses from well-developed built-up areas in megacities.This study proposed a multi-spatial urbanization framework to quantify region-level socioeconomics,cluster-level ecological morphologies,and grid-level urban functional morphologies.A three-level Bayesian hierarchical model was developed to investigate the impacts of multi-spatial driving factors on urban land use transformation in megacities.The study period focused on the urbanization process between 2000 and 2018 in Guangdong-Hong Kong-Macao Greater Bay Area(GBA).Results revealed that compared with well-developed urban built-up land,changing impacts of three-level driving factors in urban land use transformation could be captured based on the proposed Bayesian hierarchical model.The region-level total population was associated with increasing possibilities in forming new residential land than the well-developed ones in 35 districts/counties/cities in GBA.Cluster-level ecological attributes with higher proportion,lower edge density of urban built areas,and lower-degree ecological complexity showed increasing probability on newly formed industrial and public land.Grid-level urban functional factors including public transportation density and shopping/dining distribution exhibited significantly decreasing probability(coefficients:−2.12 to−0.51)on contributing newly formed land uses compared with the well-developed areas,whereas business/industry distribution represented higher(coefficients:0.99 and 0.15)and lower probabilities(coefficient:−0.22)of forming industrial/public land and residential land separately.This research shows a new attempt to distinguish multi-spatial morphological and socioeconomic effects in urban land use transformation in megacities. 展开更多
关键词 Urban function ecological morphology socioeconomics megacities Bayesian hierarchical model Guangdong-Hong Kong-Macao Greater Bay Area(GBA)
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论中国乡村地域功能优化重组与组织化机制 认领 引用 被引量：1
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作者 安悦 杨忍 +2 位作者 杨文 李思梦 葛语思 《地理研究》 CSSCI CSCD 北大核心 2026年第2期377-396,共20页
探索新时期中国乡村地域功能优化重组与组织化机制对推进城乡融合发展和乡村全面振兴具有重要现实意义。本文在梳理中国城乡关系演进过程中乡村地域功能演变与组织化特征的基础上,界定了乡村组织化的概念内涵,探讨了乡村地域功能优化重... 探索新时期中国乡村地域功能优化重组与组织化机制对推进城乡融合发展和乡村全面振兴具有重要现实意义。本文在梳理中国城乡关系演进过程中乡村地域功能演变与组织化特征的基础上,界定了乡村组织化的概念内涵,探讨了乡村地域功能优化重组的组织化需求逻辑,并深度剖析了面向城乡融合发展的乡村地域功能优化重组的组织机制。研究发现:(1)中国城乡关系经历了城乡分割与二元化确立、城乡二元与不平衡加剧、城乡统筹与一体化发展和城乡融合发展四个阶段;乡村地域功能相应呈现出服务工业优先发展的农业生产单一主导功能、依托城乡要素流通的功能分化、响应城乡统筹的功能多元化转型及面向城乡融合的功能复合化协调发展的特征演变;伴随城乡互动加强,乡村组织化程度也对应表现为高度组织化、去组织化、传统组织体系弱化以及亟需再组织化的特征。(2)乡村组织化是为满足乡村自身发展需求与适应时代发展需要,多类型行为主体将乡村分散的个体或资源整合成有结构、有秩序的体系,实现城乡资源要素优化配置与结构重塑;国家、市场和乡村内部的多元力量通过整合利用城乡要素、重塑乡村地域结构和解构重组空间组织加速了乡村组织化的实现;乡村地域功能优化重组的组织化需求逻辑体现在对城乡要素进行跨界重组与优化配置,以及提升乡村组织化程度以适应乡村地域内外环境的变化。(3)在城乡融合发展背景下,生产主体联合强化乡村地域基础功能、产业链延伸提升乡村地域经济功能、产权制度创新挖掘乡村地域特色功能,以及多元主体共治推动乡村地域功能协调发展,共同构成乡村地域功能优化重组的组织核心机制。乡村组织化重塑了城乡要素交换的界面关系,推动乡村地域功能优化重组和城乡双向价值循环。 展开更多
关键词 城乡关系 乡村地域功能 乡村组织化 城乡融合 乡村地理学
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融合环境观测和主体感知的南方城市社区绿地生态功能供需匹配研究 认领 引用 被引量：2
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作者 江海燕 余冬怡 +1 位作者 邹楠 李世杰 《生态学报》 CAS CSCD 北大核心 2026年第3期1511-1523,共13页
从微观尺度视角探究城市社区绿地生态功能供需关系,有助于提升居民福祉、促进社区高质量发展。论文选取广州、杭州、南京、无锡、三亚、昆明6个城市共26个社区,综合考虑国家政策标准和社区特征,划分为基础类、完善类、提升类三类,利用... 从微观尺度视角探究城市社区绿地生态功能供需关系,有助于提升居民福祉、促进社区高质量发展。论文选取广州、杭州、南京、无锡、三亚、昆明6个城市共26个社区,综合考虑国家政策标准和社区特征,划分为基础类、完善类、提升类三类,利用社区绿地环境观测和居民主体感知问卷调查数据,运用层次分析法和耦合协调度模型,分别从社区绿地质量、生物多样性、花粉致敏性、热舒适度、植被美景度五个维度研究南方典型城市社区绿地生态功能供需匹配问题。结果表明:(1)总体上呈现“客观物质环境梯度分异-主观生态感知趋同平衡”的特征。社区绿地环境观测综合指数处于中等偏下水平,居民主体生态感知评价综合指数处于中等偏上水平,主客观耦合协调度绝大多数处于中等水平。(2)在三类社区的比较中,客观评价、主观评价及其耦合协调评价,均按照基础类、完善类、提升类的顺序呈现梯度递增特征。(3)五个维度方面,主客观评价存在较大的差异性:客观表现为绿地质量最差、动物友好性植物最好,而主观上则表现为日晒强度感知最差、花粉致敏度最好,耦合协调度表现为社区绿地质量<热舒适度<花粉致敏性<植被美景度<生物多样性。本研究为微观尺度社区绿地生态功能供需匹配评估提供方法借鉴,为城市社区更新和治理分类施策提供参考。 展开更多
关键词 城市社区 生态功能 供需匹配 耦合协调度
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Numerical Simulation of Dam-Break Flows Using Radial Basis Functions: Application to Urban Flood Inundation 认领 引用
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作者 Abdoulhafar Halassi Bacar Said Charriffaini Rawhoudine 《American Journal of Computational Mathematics》 2024年第3期318-332,共15页
Dam-break flows pose significant threats to urban areas due to their potential for causing rapid and extensive flooding. Traditional numerical methods for simulating these events struggle with complex urban landscapes... Dam-break flows pose significant threats to urban areas due to their potential for causing rapid and extensive flooding. Traditional numerical methods for simulating these events struggle with complex urban landscapes. This paper presents an alternative approach using Radial Basis Functions to simulate dam-break flows and their impact on urban flood inundation. The proposed method adapts a new strategy based on Particle Swarm Optimization for variable shape parameter selection on meshfree formulation to enhance the numerical stability and convergence of the simulation. The method’s accuracy and efficiency are demonstrated through numerical experiments, including well-known partial and circular dam-break problems and an idealized city with a single building, highlighting its potential as a valuable tool for urban flood risk management. 展开更多
关键词 Dam-Break Flows Numerical Simulation Shallow Water Equations Radial Basis Functions Urban Flood Inundation
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转型与超越:现代化人民城市的功能体系建设 认领 引用 被引量：2
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作者 张艳涛 葛尊天 《学习与实践》 CSSCI 北大核心 2026年第1期39-49,共11页
城市是人类文明的重要载体,是现代化建设的重要引擎。现代化人民城市是新时代我国城市发展的核心导向。其功能体系建设,既涵盖世界现代化城市的共性特征,又彰显中国式现代化的独特禀赋,具体呈现为一个科学、系统、全面、协调的城市有机... 城市是人类文明的重要载体,是现代化建设的重要引擎。现代化人民城市是新时代我国城市发展的核心导向。其功能体系建设,既涵盖世界现代化城市的共性特征,又彰显中国式现代化的独特禀赋,具体呈现为一个科学、系统、全面、协调的城市有机生命体,具有丰富的理论内涵与实践指向。基于“创新、宜居、美丽、韧性、文明、智慧”的现代化人民城市发展目标及其内在特征,其功能体系可具体化为五个相互支撑、有机统一的维度。“生产-生活”维度聚焦空间正义与资本规制,重构都市生活节奏;“治理-共同体”维度通过精准、有力、有温度的治理机制,培育共治共享的城市命运共同体;“文化-精神”维度着力于文化传承与意义生产,构建城市文化认同与创新动能;“人本-空间”维度强调以人民为中心的空间实践,推动城市从资本载体回归人的发展场域;“生态-代谢”维度以生命体范式修复城市生态循环,增强系统韧性。这五个维度彼此关联、系统集成,为全球城市治理与转型提供了可资借鉴的“中国方案”。 展开更多
关键词 现代化人民城市 功能体系 城市有机生命体 空间
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