Optimization of green infrastructure networks based on potential green roof integration in a high-density urban area—A case study of Beijing, China

Dong, Jing; Guo, Fei; Lin, Meixia; Zhang, Hongchi; Zhu, Peisheng

doi:10.1016/j.scitotenv.2022.155307

Cited by 36 publications

(19 citation statements)

References 47 publications

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“…BD accounts for a relatively large proportion of each regression model parameter and has a large impact on LST; study areas with high density buildings tend to have poor ventilation, less green permeable surfaces, and large impervious surfaces are able to absorb a large amount of radiation during the day, causing a sharp increase in temperature in the study area and seriously affecting living comfort; this has similarities to the conclusions of other scholars under other climatic regions in China that urban density and height are the main factors affecting the urban thermal environment ( 37 – 39 ). High temperatures in urban neighborhoods caused by high building density can be mitigated by adding vegetation to the building envelope and changing the substrate ( 40 , 41 ). In addition, BH, although showing a negative correlation, is a very small proportion of the model and the correlation is very weak, indicating that the influence of MH on surface temperature LST is not significant.…”

Section: Resultsmentioning

confidence: 99%

Study on the mechanism of urban morphology on river cooling effect in severe cold regions

Guo

Zhao

et al. 2023

Front. Public Health

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In the context of global warming, urban climate problems such as heat waves, urban heat islands and air pollution are becoming increasingly prominent, and the cooling effect of rivers is an effective way to mitigate urban hot climate. This study investigates the surrounding urban area of the Hun River in Shenyang, a severe cold region of China, by calculating satellite inversion surface temperature and urban morphology data, and explores the cooling effect of rivers using linear regression models and spatial regression models. The results show that (1) water bodies have a cooling effect on the surrounding environment, with the farthest cooling distance being 4,000 m, but the optimal cooling distance being 2,500 m. (2) In the results of the spatial regression model analysis, the R2 value stays above 0.7 in the range of 0–4,000 m, indicating that urban morphological factors are closely related to LST (land surface temperature). The negative correlation is most pronounced for NVDI (normalized vegetation index), with a peak of −14.8075 calculated by the regression model, and the positive correlation is most pronounced for BD (building density), with a peak of 8.5526. (3) The urban thermal environment can be improved and the heat island effect mitigated through measures such as increasing urban vegetation cover and reducing building density, and these findings can provide data references and case studies to support urban planning and development departments.

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Section: Resultsmentioning

confidence: 99%

Study on the mechanism of urban morphology on river cooling effect in severe cold regions

Guo

Zhao

et al. 2023

Front. Public Health

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“…Studies have confirmed that the concentration of pollutants such as carbon emissions has a strong positive correlation with the morbidity and mortality of respiratory diseases, cardiovascular and cerebrovascular diseases ( 65 ). Therefore, it is suggested that in the urban centers, such as Stadium Street, Peace Street, Park Street, Station Street, and Keyuan Street, the huge contradiction between the demand for artificial land and vegetation land should be fully considered, and carbon emissions can be absorbed and the pollutant concentration reduced by increasing the roof greening, while in the suburbs, such as Hutian Street, Nanding Town, and Sibaoshan Street, carbon absorption can be improved by increasing the area of vegetation ( 66 , 67 ). Second, effective physical activity is one of the important ways to prevent and reduce chronic diseases.…”

Section: Discussionmentioning

confidence: 99%

Vector maps and spatial autocorrelation of carbon emissions at land patch level based on multi-source data

Zhang

Liao²,

Zhao³

2022

Front. Public Health

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An accurate carbon emissions map is of great significance for urban planning to reduce carbon emissions, mitigate the heat island effect, and avoid the impact of high temperatures on human health. However, little research has focused on carbon emissions maps at the land patch level, which makes poor integration with small and medium-sized urban planning based on land patches. In this study, a vectorization method for spatial allocation of carbon emissions at the land patch level was proposed. The vector maps and spatial autocorrelation of carbon emissions in Zhangdian City, China were explored using multi-source data. In addition, the differences between different streets were analyzed, and the carbon emissions ratio of the land patch was compared. The results show that the vector carbon emissions map can help identify the key carbon reduction land patches and the impact factors of carbon emissions. The vector maps of Zhangdian City show that in 2021, the total carbon emissions and carbon absorptions were 4.76 × 109kg and 4.28 × 106kg respectively. Among them, industrial land accounted for 70.16% of carbon emissions, mainly concentrated in three industrial towns. Forest land carbon absorption accounted for 98.56%, mainly concentrated in the peripheral streets away from urban areas. The Moran's I of land patch level carbon emissions was 0.138, showing a significant positive spatial correlation. The proportion of land patches is an important factor in determining carbon emissions, and the adjustment of industrial structure is the most critical factor in reducing carbon emissions. The results achieved can better help governments develop different carbon reduction strategies, mitigate the heat island effect, and support low-carbon and health-oriented urban planning.

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“…The United States, the United Kingdom, and Canada were the first countries to conduct research on pocket parks before 2009. According to figure 2, the United States (67), China (52), United Kingdom (18), Canada (17), Australia (16), Italy (13), Japan (11), and Germany (10) had the highest number of publications. Relevant studies are conducted in these countries due to the impact of the rapid process of urbanization, biodiversity, and sustainable development.…”

Section: Geographic Patternmentioning

confidence: 99%

“…While the design of pocket parks in Mexico has the potential to create significant urban spaces, a misalignment between politics, policy, and design has impeded the implementation of the proposed 150 new pocket parks [88]. International research and practical applications of new green infrastructure, such as green roofs, which are similar to pocket parks, have demonstrated the effectiveness of policy interventions in producing the intended results [13]. Therefore, public policy plays a critical role in promoting the implementation of urban pocket parks.…”

Section: Public Policymentioning

confidence: 99%

“…Green infrastructure is a vital component of urban areas, providing essential ecosystem services such as mitigating the urban heat island effect [6][7][8], reducing surface runoff [9], improving air quality [10,11], and supporting biodiversity [12,13]. Additionally, natural environments offer a versatile setting for outdoor recreation, physical activities, and socialization.…”

Section: Introductionmentioning

confidence: 99%

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Pocket parks-a systematic literature review

Jiang

Guo

et al. 2023

Environ. Res. Lett.

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The rapid urbanization and climate change have resulted in socio-environmental issues that necessitate viable intervention strategies to create green, healthy, and livable built environments. One effective method is the development of pocket parks. Although several studies have explored the benefits and design principles of pocket parks, there is a lack of systematic and quantitative understanding. In view of this knowledge gap, this study employs bibliometric methods and critical review to quantitatively analyze and systematically review 276 papers published in the Web of Science and Scopus databases between 1977 and 2023. Firstly, a bibliometric analysis is conducted, providing a comprehensive overview of research on pocket parks. Secondly, a detailed critical review is conducted from three major perspectives: influencing factors, design methods, and benefits of pocket parks. Finally, the research trends and future directions are discussed. The results indicate that (a) pocket park development takes various forms, with a growing number of articles published each year. However, research on this topic is primarily concentrated in the United States and China, with significant knowledge gaps remaining globally. (b) The utilization of pocket parks is affected by various factors, including internal, external physical, and socio-economic factors. The mechanisms of these factors and their interactions demand deeper understanding. (c) There is a need to conduct an in-depth exploration of planning methods for pocket parks, and planning and design methods in different country contexts can be expanded and compared. (d) Further research is needed to compare the benefits of pocket parks in different climatic zones in terms of depth and width. The outcome of this study can contribute to the body of knowledge on pocket parks, foster their wider acceptance, and help urban planners, practitioners, policy makers, and government managers apply them more effectively in resilient and livable cities of the future.

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Optimization of green infrastructure networks based on potential green roof integration in a high-density urban area—A case study of Beijing, China

Cited by 36 publications

References 47 publications

Study on the mechanism of urban morphology on river cooling effect in severe cold regions

Study on the mechanism of urban morphology on river cooling effect in severe cold regions

Vector maps and spatial autocorrelation of carbon emissions at land patch level based on multi-source data

Pocket parks-a systematic literature review

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