Yi Lu

Yi Lu
City University of Hong Kong | CityU · Department of Architecture and Civil Engineering

B.Archi, M.A.(Archi), PhD

About

112
Publications
76,193
Reads
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3,044
Citations
Citations since 2016
103 Research Items
2971 Citations
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201620172018201920202021202202004006008001,0001,200
201620172018201920202021202202004006008001,0001,200
Additional affiliations
March 2021 - present
City University of Hong Kong
Position
  • Professor (Associate)
January 2016 - present
City University of Hong Kong
Position
  • Professor (Assistant)
October 2011 - December 2015
City University of Hong Kong
Position
  • Visiting Assistant Professor
Education
January 2006 - May 2011
Georgia Institute of Technology
Field of study
  • Architecture
January 2003 - December 2004
National University of Singapore
Field of study
  • Architecture
September 1997 - July 2002
Southeast University (China)
Field of study
  • Architecture

Publications

Publications (112)
Article
Graph-based visibility analysis, developed from space syntax and social network theory, embraces mutual visibility between locations in a spatial system. It helps designers and researchers to decode spatial cognition and behavior, but methodological constraints limit its application to two-dimensional floor plans. In this study, we propose a new vi...
Article
Accumulating evidence shows that urban greenspaces have great health benefits, but establishing a causal relationship is difficult. It is often hypothesized that walking and physical activity are mediators in the relationship between urban greenspaces and health outcomes. Furthermore, most urban greenspace-physical activity studies have focused on...
Article
As global communities respond to the spread of coronavirus disease 2019 (COVID-19), urban residents worldwide have reduced their mobility, which may incidentally kept people away from greenspaces. Surprisingly, anecdotal evidence suggests greenspace use surged in Asian cities. In this study, we used the COVID-19 pandemic as a natural experiment to...
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There is striking racial disparity in the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection rates in the United States. We hypothesize that the disparity is significantly smaller in areas with a higher ratio of green spaces. County level data on the SARS-CoV-2 infection rates of black and white individuals in 135 of the most ur...
Article
Landscape architects and planners have been assessing eye-level vegetation to develop evidence-based designs, including the relationships between urban nature and human health. Measuring eye-level vegetation was often subjective and time-consuming in the past. Recent advances in computer vision have made it feasible to automatically measure eye-lev...
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Access to public greenspaces is assumed to influence peoples’ body weight. However, causal evidence on this topic is limited, especially in developing countries. Using natural experiment approach, this study assessed 1) to what extent peoples’ body mass index (BMI) changed following a greenway intervention, and 2) potential gender disparities in bo...
Article
Background Despite emerging recognition of the benefits of green and blue spaces on human health, evidence for their effect modifications on heat–mortality associations is limited. We aimed to investigate the effect modifications of green and blue spaces on heat–mortality associations among different age and sex groups and at different heat levels....
Article
The coronavirus pandemic is an ongoing global crisis that has profoundly harmed public health. Although studies found exposure to green spaces can provide multiple health benefits, the relationship between exposure to green spaces and the SARS-CoV-2 infection rate is unclear. This is a critical knowledge gap for research and practice. In this study...
Article
The COVID-19 pandemic has caused a huge loss of human life globally. However, few studies investigated the link between exposure to green space and risk of COVID-19 mortality rate, while also distinguishing the effects of various types of green space, considering the spatial distribution of human population and green space, and identifying the opti...
Preprint
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Ridesourcing is popular in many cities. Despite its theoretical benefits, a large body of studies claimed that ridesourcing also brings externalities (e.g., inducing trips and aggravating traffic congestion). Therefore, many cities are planning to or have already enacted policies to regulate its use. However, their effectiveness or their impact on...
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Transit-oriented development (TOD) planning strategy has been widely implemented worldwide to formulate dense, mixed-use built environment in the past three decades. The primary goal of TOD is to promote public transit usage including both transit mode share and ridership. Research supports that built environment characteristics around metro statio...
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Promoting urban vibrancy is one of the major objectives of urban planners and government officials, and it is linked to various benefits, such as urban prosperity and human well-being. There is ample evidence that built environment characteristics are associated with urban vibrancy; however, the spatiotemporal associations between built environment...
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Jane Jacobs (1961) theorized that four urban form conditions, namely, mixed use, short block, aged buildings, and density, are indispensable for the “exuberant diversity” and conducive to, or perhaps even determinant of, the success of a city district. Jacobs’ theory has been used widely as a reference point in case study research and policy and de...
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Introduction There is strong evidence in Western cities that neighborhood-level characteristics of the built environment are linked with a higher risk of overweight or obesity among residents. Due to the rapid urbanization during the last several decades, many types of residential community have formed and coexisted in the major cities of China. Th...
Preprint
The COVID-19 outbreak has caused enormous deaths and profound social and economic disruption globally. Accumulating evidence suggests exposure to greenspace may reduce the risk of COVID-19 mortality. Greenspace exposure enhances immune functioning, reduces inflammation, and replenishes gut microbiota may protect against the risk of mortality among...
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The influence of high-density environment on urban residents is controversial, and its effect varies with specific contexts. Meanwhile, urban planners and policy-makers are increasingly aware that urban greenery may mitigate the detrimental effects of crowded environments on quality of life in high-density cities. However, little empirical evidence...
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Existing evidence suggests that exposure to greenspace reduces the risk of high blood pressure (e.g., hypertension). In addition, greenspace may also narrow the socioeconomic and gender inequities of various health outcomes. However, exposure to greenspace was often defined from an over-head perspective. The effect of eye-level greenspace exposure,...
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Many studies have confirmed that the characteristics of the built environment affect individual walking behaviors. However, scant attention has been paid to population-level walking behaviors, such as pedestrian volume, because of the difficulty of collecting such data. We propose a new approach to extract citywide pedestrian volume using readily a...
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The metro (or underground railways) has become a backbone in the transit systems of many cities. It has numerous externalities, such as ameliorating traffic congestion and enhancing nearby property prices. Previous studies extensively focused on the relationship between metro accessibility and property prices and obtained various interesting findin...
Article
Identifying the socioeconomic drivers of COVID‐19 deaths is essential for designing effective policies and health interventions. However, how the significance and impact of these factors varies across different spatial regimes has been scantly explored. In this ecological cross‐sectional study, we apply the spatial lag by regimes regression model t...
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Global warming and rapid urbanization have exacerbated the urban heat island effect. Urban parks contribute to alleviating such an effect and achieving the “carbon emission peak before 2030” and “carbon neutrality before 2060” goals of China. Their popularity is considerably influenced by human thermal comfort. However, limited thermal comfort stud...
Article
The understanding of pedestrian-level greenery across urban forms in built environment configurations in high-density cities is insufficient. We conducted a citywide investigation of urban greenery from the pedestrian perspective by developing a deep learning technique to extract greenery from fisheye images generated from Google Street View images...
Article
A growing number of studies show that the uneven spatial distribution of COVID-19 deaths is related to demographic and socioeconomic disparities across space. However, most studies fail to assess the relative importance of each factor to COVID-19 death rate and, more importantly, how this importance varies spatially. Here, we assess the variables t...
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Considering that most working adults spend nearly half their waking time at work, creating a supportive built environment around workplaces could be a feasible approach to maintain adequate levels of physical activity. However, the extent to which the built environment around workplaces influences walking behaviors in working adults remains unclear...
Article
The worldwide coronavirus disease (COVID-19) pandemic has seriously affected the physical health and mental wellbeing (i.e mental stress and suicide intention) of numerous urban inhabitants across the globe. While many studies have elucidated urban parkland enhances and mental wellbeing, the potential for parkland to mitigate mental health burden i...
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Extensive evidence from cross-sectional studies has revealed a positive link between greenspace access and walking behaviors. However, the inherent weaknesses of the cross-sectional research design provided little causal inference. In this natural experimental study, we assessed the effects of a large-scale greenway intervention (i.e., the East Lak...
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Historic districts play a vital role in stimulating urban economic development, conserving regional culture, and enhancing public participation. Both auditory and visual environments, and the interplay between them, are critical to visitors’ perception and evaluation of historic districts. However, most studies have explored either the auditory or...
Article
Bicycle-metro integration is an efficient method of solving the “last mile” issue around metro stations. Built environment is believed to have a significant effect on cycling behavior. However, transfer cycling around metro stations, as a specific type of cycling behavior, has often been overlooked in transport research. In addition, static context...
Article
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The creation of walkable environments, and the promotion of walkability for health and environmental benefits have been widely advocated. However, the term “walkability” is often associated with two related but distinct walking behaviors: individual and collective walking behaviors. It is unclear whether spatial disparity exists between them, and w...
Article
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Many cross-sectional studies have supported the health benefits of urban greenways. However, the causal relationship between urban greenway intervention and residents’ physical and mental health remains unclear. Furthermore, the potential dose-response effect by distance to a greenway intervention remains unknown. This study explored the impact of...
Book
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Table of Content 04 Editorial: The Association Between Greenness, Health, and Well-Being in Urban Environments Zhonghua Gou, Ye Liu, Yi Lu and Wenjie Wu 06 Characterizing Horizontal and Vertical Perspectives of Spatial Equity for Various Urban Green Spaces: A Case Study of Wuhan, China Sanwei He, Yilin Wu and Lei Wang 17 Evaluating Cultural Ecosyst...
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Population aging has become a notable and enduring demographic phenomenon worldwide. Older adults' walking behavior is determined by many factors, such as socioeconomic attributes and the built environment. Although a handful of recent studies have examined the influences of street greenery (a built environment variable estimated by big data) on ol...
Article
To examine whether residential self-selection bias influence the associations between neighborhood PA facilities and respondents' PA behavior. This study uses a natural experimental research design. Three waves of China Family Panel Studies data were used. The outcome variables were the weekly duration and frequency of PA. The availability of neigh...
Preprint
Full-text available
This study examined the associations between green spaces and one–years' worth of SARS–CoV–2 infection rates across all 3,108 counties in the contiguous United States after controlling for multiple categories of confounding factors. We found green spaces at the county level have a significant negative association with infection rates. Among all typ...
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https://www.frontiersin.org/articles/10.3389/fpubh.2021.732876/full The collected articles address a wide range of critical issues, such as accessibility, environmental satisfaction, air pollution, social-cultural values, and ecosystems, which link urban greenness and urban residents’ health and wellbeing in multifaceted perspectives. Several art...
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The coronavirus disease 2019 pandemic has stimulated intensive research interest in its transmission pathways and infection factors, e.g., socioeconomic and demographic characteristics, climatology, baseline health conditions or pre-existing diseases, and government policies. Meanwhile , some empirical studies suggested that built environment attri...
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The coronavirus disease 2019 (COVID-19) pandemic and related social distancing measures have altered the daily lifestyles of people worldwide. Although studies on this disease are emerging rapidly, less is known about the impacts of COVID-19 and urban greenery on leisure-time physical activity, which is critical to maintain health for urban residen...
Article
Extreme heat is a leading cause of weather-related human mortality throughout much of the world, posing a significantly heavy burden on the development of healthy and sustainable cities. To effectively reduce heat health risk, a better understanding of where and what risk factors should be targeted for intervention is necessary. However, little res...
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Although many studies have confirmed the effects of the built environment on adiposity outcomes in the general population, evidence for young adults is scarce. Furthermore, most prior studies are prone to residential self-selection bias due to the nature of cross-sectional research design, which makes the built environment–adiposity relationship sp...
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Population aging is a conspicuous demographic trend shaping the world profoundly. Walking is a critical travel mode and physical activity for older adults. As such, there is a need to determine the factors influencing the walking behavior of older people, especially in the era of population aging. Streetscape greenery is an easily perceived built-e...
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Nature underpins human well-being in critical ways, especially in health. Nature provides pollination of nutritious crops, purification of drinking water, protection from floods, and climate security, among other well-studied health benefits. A crucial, yet challenging, research frontier is clarifying how nature promotes physical activity for its m...
Article
Various social distancing measures carried out in many cities worldwide during the coronavirus disease 2019 pandemic (COVID-19). These measures have led to decreased physical activity levels and higher health risks among urban populations. Strong evidence has been established that built environment characteristics can stimulate physical activity an...
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Urban parks have well-documented health benefits for urban residents. To increase the use of parks and enhance the physical activity level of city-dwellers, recent studies have explored the link between the amount of greenery in parks and the level of park usage. However, the results have been inconsistent, partly due to different measurements of p...
Article
Suicide is a global challenge. Although it is clear that socioeconomic and demographic factors influence suicide rates, we know little about the impacts of the built environment on suicide rates. We investigated the relationship between characteristics of the built environment and suicide death rates over a 13-year period in 151 rent-only public h...
Article
Although Australia has been successful in increasing the total number of residential solar photovoltaic (PV) panels, the disparity of PV adoption among regions has raised concerns about energy justice. To understand the regional difference of PV adoption in relation to the socioeconomic variance, this research introduced a machine learning approach...
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The newly prevailing dockless bike-sharing system offers a decent solution to the first-and last-mile problem and connect trip origins/destinations and transit (mostly metro) stations. Few studies, however, have explored the effects of built environment characteristics on the integrated usage of dockless bike-sharing and the metro, especially in di...
Article
Although many cross-sectional studies have confirmed the positive associations between greenspaces and physical activity, evidence from natural experiments is scarce, especially for large-scale greenspace interventions. In addition, it is unclear how the physical-activity-related benefits of a greenspace intervention vary with distance from residen...
Article
With a strong commitment to sustainability, numerous universities set their carbon reduction targets, with the common measure being energy retrofitting of their campus buildings. Based on a complex understanding of the higher educational buildings’ energy consumption characteristics, this study addresses the role of the academic calendar that regul...
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Existing literature has inadequately examined the nexus between tourism and property prices. Additionally, it mainly focuses on hotels and housing, thereby overlooking other property categories (e.g., retail properties). The relationship between tourism development and retail property prices in shopping destinations (e.g., Hong Kong and Singapore)...
Preprint
Full-text available
check out the new link https://www.researchgate.net/publication/349675412_Escaping_to_nature_during_a_pandemic_A_natural_experiment_in_Asian_cities_during_the_COVID-19_pandemic_with_big_social_media_data Cities implemented social distancing measures to cope with COVID-19, which kept people away from nature. A steep drop in the greenspace use was o...
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Bus rapid transit (BRT) systems have mushroomed worldwide in the last few decades. An enriched understanding of BRT capitalization effects is essential. Although the BRT accessibility effect on housing prices has been extensively explored, the effect of proximity to the BRT corridor (which may be related to unattractive landscape and noise pollutio...
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Evidence suggests that built environment characteristics affect older adults’ travel activity behaviors, e.g., walking and cycling, which have well-established health benefits. However, the relationship between urban greenery and walking behaviors remains unclear, partly due to methodological limitation. Previous studies often measured urban greene...
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A significant increase in the older population has been observed in numerous cities. Understanding the correlates of older adults’ mobility is, therefore, of critical importance to meet the needs of this growing population. Based on multisource data, including Google Street View street image data and Hong Kong Travel Characteristics Survey 2011 dat...
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Children who are overweight or obese are at a higher risk of several diseases and are more likely to be overweight or obese in adulthood. Physical inactivity among children and adolescents is one of the major causes of the prevalence of overweight and obesity problems, and hence promoting physical activity, especially active school transport (AST),...
Article
Urban parks and tree-lined streets are major components of urban greenspaces, as well as the most frequently used public spaces for senior citizens. Studies have shown significant associations between urban greenspaces and various health outcomes of older adults. However, most of them focused on urban parks or overall vegetation coverage, and few h...
Article
Pedestrian volume is an important indicator of urban walkability and vitality. Hence, information on pedestrian volumes of different streets is indispensable for creating healthy, pedestrian-oriented cities. Pedestrian volume data have traditionally been collected through field observations, which has many methodological limitations, e.g. time-cons...
Article
Bicycle-transit integration is important for improving the efficiency and sustainability of public transportation systems in urban areas. Urban greenness around metro stations is an important factor affecting the use of cycling to or from metro stations. However, the evidence for the association between urban greenness and cycling behaviors is inco...
Article
Background: Air pollution especially PM2.5 (particulate matter with a diameter of below 2.5 μm) has been recognized as a key environmental factor that affects mental health, but few studies has focused on its influence on older adults who are a vulnerable group. Objective: This study focused on the influence of PM2.5 on health-related behaviors...