Caige Sun
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View article: Spatiotemporal Regulation of Urban Thermal Environments by Source–Sink Landscapes: Implications for Urban Sustainability in Guangzhou, China
Spatiotemporal Regulation of Urban Thermal Environments by Source–Sink Landscapes: Implications for Urban Sustainability in Guangzhou, China Open
Urban thermal environments critically impact human settlements and sustainable urban development. In this study, a multi-index framework integrating Landsat TM/ETM+/OLI observations (2004–2019) is developed to quantify the contributions of…
View article: Identifying stepping-stones within small wetlands in highly urbanized areas and under network construction: A case study of the Guangdong–Hong Kong–Macao greater Bay Area, China
Identifying stepping-stones within small wetlands in highly urbanized areas and under network construction: A case study of the Guangdong–Hong Kong–Macao greater Bay Area, China Open
In highly urbanized areas, small wetlands can provide multiple ecosystem services while benefiting the well-being of citizens. Although existing studies on wetland ecological networks have prioritized large wetland conservation measures, i…
View article: Biomass Inversion of Highway Slope Based on Unmanned Aerial Vehicle Remote Sensing and Deep Learning
Biomass Inversion of Highway Slope Based on Unmanned Aerial Vehicle Remote Sensing and Deep Learning Open
Biomass can serve as an important indicator for measuring the effectiveness of slope ecological restoration, and unmanned aerial vehicle (UAV) remote sensing provides technical support for the rapid and accurate measurement of vegetation b…
View article: Accurate solution of the SAIL model by leaf inclination angle calculation based on laser point clouds
Accurate solution of the SAIL model by leaf inclination angle calculation based on laser point clouds Open
The canopy radiative transfer model enables quantitative inversion of vegetation biophysical parameters by rapidly simulating spectral information. However, structural input parameters, such as the leaf inclination angle distribution (LAD)…
View article: Habitat Quality Assessment and Driving Factors Analysis of Guangdong Province, China
Habitat Quality Assessment and Driving Factors Analysis of Guangdong Province, China Open
Habitat quality is a key factor in regional ecological restoration and green development. However, limited information is available to broadly understand the role of natural and human factors in influencing habitat quality and the extent o…
View article: Refined Carbon Emission Measurement Based on NPP-VIIRS Nighttime Light Data: A Case Study of the Pearl River Delta Region, China
Refined Carbon Emission Measurement Based on NPP-VIIRS Nighttime Light Data: A Case Study of the Pearl River Delta Region, China Open
The accurate measurement of CO2 emissions is helpful for realizing the goals of “carbon neutralization” and “carbon peak”. However, most current research on CO2 emission measurements utilizes the traditional energy balance coefficient and …
View article: Long-Term Spatiotemporal Characteristics and Impact Factors of Land Surface Temperature of Inhabited Islands with Different Urbanization Levels
Long-Term Spatiotemporal Characteristics and Impact Factors of Land Surface Temperature of Inhabited Islands with Different Urbanization Levels Open
Surface thermal environment (STE) is closely related to the comfort and health of residents, affecting regional livability, and its spatial and temporal changes are deeply affected by the urbanization process. Considering there is a lack o…
View article: Temporal and Spatial Evolution and Prevention and Control Management of the "5·21" COVID-19 in Guangzhou
Temporal and Spatial Evolution and Prevention and Control Management of the "5·21" COVID-19 in Guangzhou Open
The "5·21" epidemic in Guangzhou was the first local outbreak in China caused by the COVID-19 mutation (Delta). This study analyzed the statistical characteristics, diffusion network, and prevention and control management of the epidemic d…
View article: Multi-criteria framework for identifying the trade-offs and synergies relationship of ecosystem services based on ecosystem services bundles
Multi-criteria framework for identifying the trade-offs and synergies relationship of ecosystem services based on ecosystem services bundles Open
The interaction relationship of ecosystem services (ESs) is among the most critical objective in natural resource management. However, a complexity of the spatial heterogeneity of delivering multiple ESs from social-ecological system was s…
View article: Multiscale spatiotemporal dynamics analysis of urban green space: Implications for green space planning in the rapid urbanizing Hefei City, China
Multiscale spatiotemporal dynamics analysis of urban green space: Implications for green space planning in the rapid urbanizing Hefei City, China Open
Under the pressure of rapid urbanization, the spatiotemporal dynamics of urban green spaces (UGS) have enormous impacts on the local ecological system and environment at different scales. In this study, UGS in Hefei City, which has experie…
View article: Establishing coordinated development index of urbanization based on multi-source data: A case study of Guangdong-Hong Kong-Macao Greater Bay Area, China
Establishing coordinated development index of urbanization based on multi-source data: A case study of Guangdong-Hong Kong-Macao Greater Bay Area, China Open
Evaluation of the coordinated development level of urbanization is an essential step in the implementation of sustainable development strategies. In this study, we constructed a comprehensive evaluation indicator system for the coordinated…
View article: Analysis of sustainability of Chinese cities based on network big data of city rankings
Analysis of sustainability of Chinese cities based on network big data of city rankings Open
Background: Achieving urban sustainability is the ultimate destination of urban development. City rankings as one of the sustainability assessment tools have received increasing attention from the scientific community. However, few study a…
View article: Temporal and Spatial Variation of Anthropogenic Heat in the Central Urban Area: A Case Study of Guangzhou, China
Temporal and Spatial Variation of Anthropogenic Heat in the Central Urban Area: A Case Study of Guangzhou, China Open
The urban heat island effect caused by the rapid increase in urban anthropogenic heat has gradually become an important factor affecting the living environment of urban residents. Studying the temporal and spatial variation characteristics…
View article: The Challenge of the Urban Compact Form: Three-Dimensional Index Construction and Urban Land Surface Temperature Impacts
The Challenge of the Urban Compact Form: Three-Dimensional Index Construction and Urban Land Surface Temperature Impacts Open
Cities are growing higher and denser, and understanding and constructing the compact city form is of great importance to optimize sustainable urbanization. The two-dimensional (2D) urban compact form has been widely studied by previous res…
View article: Exploring the Variation Trend of Urban Expansion, Land Surface Temperature, and Ecological Quality and Their Interrelationships in Guangzhou, China, from 1987 to 2019
Exploring the Variation Trend of Urban Expansion, Land Surface Temperature, and Ecological Quality and Their Interrelationships in Guangzhou, China, from 1987 to 2019 Open
This study explored the model of urban impervious surface (IS) density, land surface temperature (LST), and comprehensive ecological evaluation index (CEEI) from urban centers to suburbs. The interrelationships between these parameters in …
View article: Estimating the Characteristic Spatiotemporal Variation in Habitat Quality Using the InVEST Model—A Case Study from Guangdong–Hong Kong–Macao Greater Bay Area
Estimating the Characteristic Spatiotemporal Variation in Habitat Quality Using the InVEST Model—A Case Study from Guangdong–Hong Kong–Macao Greater Bay Area Open
The intensity of human activity, habitat loss and habitat degradation have significant impacts on biodiversity. Habitat quality plays an important role in spatial dynamics when evaluating fragmented landscapes and the effectiveness of biod…
View article: Investigation of Dynamic Coupling Coordination between Urbanization and the Eco-Environment—A Case Study in the Pearl River Delta Area
Investigation of Dynamic Coupling Coordination between Urbanization and the Eco-Environment—A Case Study in the Pearl River Delta Area Open
The interaction between urbanization and the eco-environment is usually viewed as an effect–feedback framework. Its coupling system is composed of urbanization and eco-environment subsystems. In this paper, the coupling degree (CD) and the…
View article: Improving Accuracy of Impervious Surface Extraction Based on a Threshold Hierarchical Method (THM)
Improving Accuracy of Impervious Surface Extraction Based on a Threshold Hierarchical Method (THM) Open
Impervious surface area (ISA) is an important representation of urban area. It is very popular to extract ISA by using linear spectral mixture analysis (LSMA). However, there are still some defects in this method: underestimated in areas w…
View article: Residential Spatial Differentiation Based on Urban Housing Types—An Empirical Study of Xiamen Island, China
Residential Spatial Differentiation Based on Urban Housing Types—An Empirical Study of Xiamen Island, China Open
Residential spatial differentiation, also called residential segregation, is a representation of the differentiation of social stratum in economic income, social status, education degree, lifestyle, and other aspects, based on an urban geo…