Flood resilience reflects the comprehensive response ability of communities and regions in the face of flood disasters. With the acceleration of global climate change and urbanization, the risk of flood disasters is increasing. In this context, it is of great significance to carry out the assessment of flood resilience. In this paper, taking Guangdong Province in 2020 as an example, the evaluation index of flood resilience is constructed based on PSR model. Using Game Theory to combine subjective and objective weights, TOPSIS method is used to evaluate the flood resilience of 21 prefecture level cities in Guangdong Province, and its spatial characteristics and obstacle factors are analyzed. The results show that the level of flood resilience of most cities in Guangdong Province is not high, and there is a gap between different cities. On the whole, the level of flood resilience of cities in the Pearl River Delta is higher than that of other cities; Spatially, the level of flood resilience shows a spatial pattern with Guangzhou as the center, high in the South and low in the East, West and North, and there is a significant level of spatial aggregation; The main obstacle factors affecting flood resilience are: medical conditions, risk response ability and communication ability. The research results of this paper can provide the corresponding theoretical basis for the construction and management of urban flood resilience.

The social integration of the floating population has emerged as a central issue in the context of China's new urbanization. Urban villages, as a primary type of migrant settlement, exert complex influences on migrants' integration experiences. However, the mechanisms through which residential conditions in urban villages affect social integration remain underexplored. Moreover, existing studies predominantly emphasize local integration processes, often overlooking the role of trans-regional interactions. Drawing on original survey data collected in Guangzhou, this study introduces a social capital perspective and develops a theoretical framework linking urban village residence-social capital–social integration. A moderated mediation model is employed to systematically examine: (1) the direct effects of residing in urban villages on social integration; (2) the mediating role of social capital, including relational networks, trust, and reciprocity norms; and (3) the moderating influence of return migration frequency. The findings indicate that: (1) living in urban villages significantly lowers the level of social integration among the floating population, reaffirming the spatial segregation effect; (2) social capital serves as a key mediating mechanism, with relationship networks, trust, and reciprocity acting as distinct transmission pathways; and (3) a higher frequency of returning to one's hometown mitigates the adverse effects of urban village residence on both social capital and social integration, by providing emotional, social, and material support from origin communities. This reveals the moderating function of cross-regional social ties in the integration process. This study advances current understandings of how urban village residential environments influence migrant integration, while extending the application of social capital theory within migration studies. It further highlights the potential of urban villages as spaces for social capital reconstruction and emphasizes the importance of migrants' sustained linkages between their hometowns and host cities. These insights contribute to promoting more inclusive and human-centered urbanization strategies.

The spatial distribution and allocation of higher education resources are directly related to the region's innovation ability and competitiveness. As China's most dynamic economic region, rational layout of higher education resources of the Guangdong-Hong Kong-Macao Greater Bay Area is crucial to support its advancement into a world-class bay area. Based on the perspective of geographic space, this study summarizes the shortcomings of domestic and foreign research, follows the path of "resource pattern distribution and influencing mechanism", and uses the GINI coefficient and geographic detector analysis method to analyze the spatial distribution balance and influencing factors of higher education resources in the Guangdong-Hong Kong-Macao Greater Bay Area. The research shows: (1) The spatial distribution of higher education resources in the Guangdong-Hong Kong-Macao Greater Bay Area is obviously unbalanced, among which Guangzhou and Shenzhen are obviously unbalanced relative to population and economic distribution. (2) The spatial distribution of higher education resources in the Guangdong-Hong Kong-Macao Greater Bay Area is highly correlated with factors such as the number of urban primary and secondary school students, urban per capita GDP, urban population and urban education expenditure. In particular, it is greatly affected by the number of primary and secondary school students, indicating that higher education is greatly affected by basic education. (3) In the interactive factor detection, the number of urban primary and secondary school students combined with other factors will achieve a large nonlinear enhancement effect. It is expected that the spatial structure of educational resources in the Guangdong-Hong Kong-Macao Greater Bay Area will form a geographical spatial circle structure with four core cities of Hong Kong, Macao, Guangzhou and Shenzhen, and other cities such as Zhuhai, Dongguan and Foshan as the periphery in the future, radiating and driving the development of surrounding areas. The research helps to understand the specific gaps in the balance of the spatial structure of higher education resources in the Greater Bay Area, which is beneficial to the rational allocation of higher education resources and the rational tilt of policies.

Exploring the underlying laws behind road illegal incidents can reduce dangerous driving behaviors at the source and maintain social harmony and stability. It can also help the development of urban traffic with high efficiency and high quality, and improve the level of refined traffic governance. Therefore, the analysis of influencing factors of traffic violations in cities is an important prerequisite of accurate analysis of the laws of traffic violations. In this study. The authors took traffic violation data of Guangzhou in October 2015 as an example, and the association rule mining(ARM) of traffic violations and various influencing factors was carried out. Based on the FP-Growth algorithm, this paper excavates the relationship between the types of illegal activities, the time of occurrence, the spatial location and the information of the vehicles in the traffic violation data. It is found that large vehicles of local city are more likely to have no environmental protection signs and illegal use of lanes. Cars from other cities are more likely to overspeed; morning and evening peaks on working days are strongly related to violations of prohibition signs, while traffic violations on highways are more likely to occur on weekends. By introducing POI data and spatial location information, this article can more accurately identify high-incidence traffic violations near specific road sections or public facilities, and provide support for fixed-point traffic governance.

The classification and naming of of the Hongshanwan landform in the Zhangye UNESCO Global Geopark have long been contentious. Through research and comparison, it is found that there are significant differences in geomorphic forces, landform morphology, material composition, landform development, and evolutionary processes compared to the Danxia landforms. Following the principles of rock landform classification and naming, it is currently appropriate to refer to them as the Hongshanwan landforms. As a subcategory of red bed landforms, they should be listed alongside the Danxia landforms. This article proposes the definition of Hongshanwan landforms as follows: they are characterized by internal forces of structural tilting, with surface sheet flow as the main external force, and are formed by the combined action of external forces such as weathering, erosion, and gravity, resulting in gentle slopes with colorful rhythmic sedimentary features typical of red bed landforms. These landforms are mainly composed of red Cretaceous terrestrial mudstones and sandstones with interbedded grayish-blue and grayish-green colors. The main internal and external forces shaping the landforms are structural tilting and surface sheet flow, respectively. The landform morphology is characterized by gentle undulations, colorful rhythmic sedimentary features, and the development of micro-landforms such as mud stalactites, mud waterfalls, and small earth pyramids. Depending on the combination of stratum dip and slope morphology, the landscape types of Hongshanwan landform can be categorized into over ten types, including horizontal color stripe type, inclined color stripe type, vertical color stripe type, rainbow type, inverted rainbow type, wave type, scallop type, pleated skirt type, and composite type. Hongshanwan landforms are mainly distributed in arid and semi-arid regions, particularly in the central areas of red beds basins closely related to mountainous regions, including Jiuquan, Zhangye, and Lanzhou basins in front of the Qilian Mountains, the Junggar Basin at the southern foot of the Altai Mountains in Xinjiang, and the Andes Mountains in South America.

The establishment of the National Social Science Fund (National Social Science Fund) project is not only an important symbol of the scientific research strength and organizational ability of each region, but also reflects the development trend and hot direction of the discipline field. Existing bibliometrics studies focus more on bibliometrics analysis, and less on the perspective of national social science projects. Using the National Social Science Foundation project database as the data source, this paper collected and analyzed the projects whose provinces, regions, and cities were in Guangdong Province from 1994-2021 for statistical analysis, and used methods such as bibliometrics and knowledge map to describe the knowledge picture of social science research in Guangdong Province reflected in the national social science project in Guangdong Province. The results showed as follows: (1) During the study period, a total of 4 794 national social science projects were established in Guangdong Province, ranking fourth among all provinces, regions, and municipalities (excluding Hong Kong, Macao, and Taiwan), with an average annual growth rate of 15.7%. Among them, there were 3 211 general projects, youth projects and later funded projects, and 444 major projects and key projects, all of which were higher than the national average. (2) The project disciplines mainly focus on the applied economy, Chinese literature, linguistics, and sociology, with keywords such as "carbon emission", "leisure agriculture", "tropical climate", "rural tourism" and "rural revitalization" as the research themes. The research results are mainly monographs, papers, reports, and these combined, large-scale surveys, computer software, and reference books are lacking. (3) The project approval units are mainly institutions of higher learning, among which, Sun Yat-sen University, Jinan University, and South China Normal University have a large number of projects, while Guangzhou University and Guangdong University of Foreign Studies have made significant progress in recent years. (4) The number of projects initiated by the core hosts reached 57%, but the number only accounted for one-tenth of the total number of project leaders. The discipline of the core host is sociology. Overall, the number of national social science projects in Guangdong Province has increased steadily, and the projects are mainly concentrated in a few key universities, superior disciplines and core hosts. In the future, based on maintaining superior disciplines, Guangdong Province should focus on expanding non-superior disciplines, cultivating competitive scientific research institutions, building scientific and reasonable research echelons including senior, middle-aged, and young scientists, forming a situation that includes a wide variety of subject area, and further strengthening the strength of social science research in Guangdong Province.

Under the background of Chinese culture goes global, the study of Guangdong Province, one of the important economic regions in China, has become one of the most important contents for the construction of Guangdong's overseas image and Sino-Japanese cultural mutual understanding by Japanese academics. In this paper, we take the research topics on Guangdong included in the Database of Grants-in-Aid for Scientific Research(KAKEN) as the data source, and use CiteSpace to visualize and analyze the academic groups, research institutes, and core contents, in order to present the focuses and trends of the research on Guangdong Province in the Japanese academia. The results show that the research on Guangdong Province in Japanese academia involves a large number of research groups and research institutions, and the research hotspots show the characteristics of "economy-country-region" over time, mainly focusing on the Chinese diaspora in the East Asian region, the culture of Chinese clans, and the industrial economy of Guangdong, focusing on regional countries, economic development, and the development of Guangdong. The research focuses on the three core clusters of regional countries, economic development and language and culture. By systematically organizing and evaluating the academic achievements of Guangdong studies in the Japanese academic community, we can provide a "knowledge map of Guangdong studies in the Japanese academic community" with certain reference value for future research and policy making on the dissemination of Guangdong's culture overseas and image writing.

In recent years, with the support and promotion of relevant policies, the work of rural land transfer in China has been gradually promoted, but many problems have also been encountered in practice. Taking Jiangmen City, Guangdong Province as an example, this paper uses the FAT institutional analysis framework in the institutional credibility theory to analyze the operational logic of the farmland transfer system. The study found that the practice of rural land transfer is jointly promoted by the government, village collective, farmers and operators. The key to the effective implementation of the rural land transfer system is to gather the consensus of the main body on the system, that is, the perception of system credibility. At present, the system of rural land circulation has encountered a dilemma in the implementation of the system in practice. The system in practice is difficult to meet the expectations of the participants, affects the perception of the main body of the system function, and is difficult to form a joint force to promote rural land circulation. Therefore, the formulation of the farmland transfer system should pay attention to the demands of the actors and regional differences, give play to the endogenous power of the countryside, and explore the effective realization of activating the farmland resources. This study enriches the application of credibility theory in China's land management, reorganizes a credible land transfer mechanism, helps optimize the rural land transfer system, and provides reference for dealing with the relevant "three rural issues".

The regional geographical concept of "Guangdong Nan-lu", which was frequently used in modern historical documents of Guangdong, roughly emerged during the time when Cen Chunxuan, the viceroy of Guangdong and Guangxi, reorganized and recruited soldiers in the 29th year of Guangxu's reign in the Qing Dynasty (1903). It was ultimately established when the Guangzhou KMT Government established the position of "Administrative Commissioner of Guangdong Nan-lu" in 1925. During the period of the Republic of China, the use of the term "Nan-lu" gradually increased, with both broad and narrow connotations: in a broad sense, it referred to Gaozhou Prefecture, Leizhou Prefecture, Lianzhou Prefecture, Qinzhou, counties such as Enping, Kaiping, Xinhui, Xinxing, Yangchun, and Yangjiang in Zhaoqing Prefecture, Luoding Prefecture, and the Qiongya region; in a narrow sense, it specifically referred to Gaozhou Prefecture, Leizhou Prefecture, Lianzhou Prefecture, Qinzhou, and the two counties of Yangjiang and Yangchun. The ever-changing connotations of "Guangdong Nan-lu" were not only a result of the continuous disintegration and reorganization of regional political forces in modern Guangdong but also driven by the misalignment between the area's socioeconomic development disparities and its strategic position. After 1949, with the adjustment of the provincial boundaries and administrative divisions between Guangdong and Guangxi, the term "Guangdong Nan-lu" gradually faded away.

The coast of Pearl River estuary is one of the most densely populated, economically active, and resource-intensive large-scale estuarine coastal zone in China and the world. It is facing many problems such as excessive reclamation, functional degradation, and resource attenuation, which poses a serious threat to regional ecological balance and high-quality development. Due to the limited load of traditional remote sensing processing platform, the consistency of image processing in medium and large scale areas is poor, resulting in low accuracy of ground object classification results. Based on the Google Earth Engine(GEE) cloud platform, five periods of land use type data were obtained from 2000 to 2020, with the total accuracy ranging from 86.27% to 90.15%. Secondly, land use transfer matrix and dynamic degree are used to describe the temporal and spatial characteristics of land use transition in the coast of Pearl River Estuary. Finally, the influence mechanism of landscape evolution in the Pearl River Estuary is quantitatively revealed by using the optimal parameter geographic detector the geographic detector. The results are as follows: (1) The coastal landscape pattern of the Pearl River Estuary altered frequently over the past twenty years, with the comprehensive dynamic degree ranging from 2.66% to 3.62%. The dramatically shift between forest and cultivated land was observed in the western coast of the Pearl River Estuary, while the strong growth of construction land was mainly detected in the eastern coast of the Pearl River Estuary. (2) The optimal parameters of geographic detection of coastal landscape evolution in the Pearl River Estuary could be divided into 9~15 categories, and the optimal spatial scale threshold of geographical detection of impact factors was 90 m×90 m. (3) The coastal landscape evolution pattern of the Pearl River Estuary suffered from both natural and anthropogenic factors at different periods. The driving force of the two-factor interaction was significantly higher than that of the single-factor driving force, showing a two-factor enhancement effect or nonlinear enhancement. And the interaction between GDP variation and temperature variation, with a q value of 0.345, contributed the most to the change of mangrove forest from 2000 to 2005. The study revealed that future resource planning and utilization and comprehensive management of the Pearl River Estuary coastal zone should be paid enough attention to the scale effect of landscape patches. In addition, quantitative detection of interaction between GDP and other factors was in the primary determinants of land use change. To balance the coordination relationship between the rapid economic growth and the regional ecological environment, and promote the high-quality development of the Guangdong-Hong Kong-Macao Greater Bay Area.

Collapsing hill is the most severe type of soil erosion in southern China. This study investigated the soil physical properties and particle size composition of different landforms in Gangwei Collapsing Hill, Xinyi City, and explored the changes in soil physical properties and particle size in different landforms, as well as reveals the development mechanism of collapse erosion. The results showed that: (1) There are significant differences in physical properties such as water content, bulk density, specific gravity, and porosity in soil samples from different landforms of Gangwei Collapse Hill. The soil texture of the upper collapsing wall and colluvial deposit is relatively dense and compact, and the degree of water transformation is relatively weak; the loose soil texture of soil samples from scour channel and alluvial fan indicates a strong participation of water flow. (2) The particle size composition shows that the soil sample of Gangwei collapse hill is gravel containing sandy soil. The soil samples from the collapsing wall exhibit the undisturbed soil characteristics of the weathered granite crust, while the soil samples from the colluvial deposit are the product of the combined erosion of gravity and hydraulic forces, while the soil samples from channel and alluvial fan exhibit sedimentary characteristics dominated by flowing water. (3) The uniformity coefficient and curvature coefficient indicate that the accumulation time of collapsed soil is relatively short. The development age of the collapsing hill is relatively young, and the geomorphic form and vegetation coverage of the collapsing hill also indicate that it is in the stage of development.

According to the survey data of geological disasters, karst collapse has become one of the main geological disasters that restrict the social and economic development of Guangzhou city. More than 700 karst collapses and related data in Guangzhou city over the past 50 years are statistically analyzed by the Guangzhou city geological disaster investigation and risk assessment Project. Based on the analysis of the spatial distribution of soluble rock and karst, the distribution, morphology and controlling factors of karst collapse in Guangzhou city are systematically studied. The results show that the development of karst collapse in Guangzhou city is mainly controlled by the degree of karst development, the structure of the cover lying geotechnical body, geological structure, hydrogeological environment and the intensity of human engineering activities. The direct triggering factors of karst collapse mainly include drainage of groundwater by mining and foundation engineering construction, excessive exploitation of karst groundwater, drilling construction, ground vibration loading, water and mud inrush from mining tunnel, heavy rainfall infiltration, and alternating effects of drought and flood. The research results provide an informative geological basis for the prevention and control of karst collapse in Guangzhou city.

Electronic information industry is the strategic pillar industry in Pearl River Delta region.This article employ location quotient model to explore the agglomeration level of the electronic information industry in the Pearl River Delta region as well as the POI data of electronic information enterprises, using standard deviation ellipse, kernel density estimation, spatial auto-correlation analysis and other methods to check the spatial distribution pattern of the electronic information industry in the Pearl River Delta region from 2015 to 2022. In addition, the authors use OLS, SLM and SEM three spatial measurement models to select the optimal model to explore its influencing factors. The results show that: Firstly,There are differences in the level of electronic information industry agglomeration among cities in the Pearl River Delta, Guangzhou and Shenzhen are in the leading position. Secondly, the spatial distribution of the electronic information industry in the Pearl River Delta has evolved from a scattered distribution with Guangzhou and Shenzhen as the core to a contiguous distribution in the surrounding cities. Thirdly, R&D talents, scientific and technological innovation ability, economic development level and capital investment enthusiasm are important factors affecting the spatial distribution of electronic information industry in the Pearl River Delta region.The level of economic development, information technology talents, research and development funds input, scientific and technological innovation ability, and transportation infrastructure are the important factors affecting the spatial distribution of electronic information industry in the Pearl River Delta region.

Qiaoxiang is a complex social space in which the development practices of overseas Chinese and their homelands at home and abroad are viewed and the cross-cultural and cross-institutional interactions are examined. This paper reveals the complex processes and laws of power interaction among transnational subjects through tourism development in Qiaoxiang, using the expropriation of the Guan Library in the Chikan ancient town as a case study, based on a continuous six-month field survey, and by constructing a theoretical framework of politics of scale. The results show that: in the process of the development of Qiaoxiang, the scale relations characterized by the interweaving of vertical scale of sectional power and horizontal scale of social networks at home and abroad; in the process of politics of scale around property rights, transnational subjects use three forms of scale strategies, vertical, horizontal and expressive, to reconstruct scale, and use scale upward and downward pushing to generate new scale as a means of struggle; The relatively weak subjects usually use the means of upscale to break the inherent scale boundary and complete the scale transformation; the relatively strong subjects use the strategy of downscale to consolidate their own scale boundary and achieve the purpose of scale fixation; the expression scale, as a common scale tool for all subjects, assists in achieving the purpose of their respective games in the vertical or horizontal scale; the vertical scale of domestic section administrative power acts as a rigid scale to determine the final trend of the outcome, while the horizontal scale between clan social networks at home and abroad as a flexible scale influences the decision formation, and how to pry and obtain the support of higher vertical scale is the key to realize the transformation of power relations. The results seek to present the special "Qiao" characteristics of transnational social space in Qiaoxiang, provide theoretical guidance and empirical reference for better guiding the development and governance of Qiaoxiang, and initially respond to the long neglected concern of geography about the special people-territory relationship and its spatial response in Qiaoxiang.