Matthias Braubach (MPH/MSc) is an urban geographer and environmental health expert. He works as Technical Officer Urban Health and Equity in the European Centre for Environment and Health of the World Health Organisation (WHO) Regional Office for Europe. His work priorities address health impacts of environmental risks in urban environments, with a focus on embedding environmental health considerations in urban planning, the health benefits of urban nature, and the unequal distribution of environmental risks and benefits across urban populations. He has edited and contributed to a variety of WHO reports and academic publications, and was involved in various EU projects on urban environments, equity and health.

Timothy Beatley is the Teresa Heinz Professor of Sustainable Communities, in the School of Architecture at the University of Virginia, where he has taught for the last thirty years. Beatley is the author or co-author of more than twenty books, including Green Urbanism: Learning from European Cities, Native to Nowhere: Sustaining Home and Community in a Global Age, and Biophilic Cities: Integrating Nature Into Urban Design and Planning. Beatley directs the Biophilic Cities Project at UVA (http://biophiliccities.org/) and co-founded UVA's Center for Design and Health, within the School of Architecture.

A recipient of Doctor of Design at Harvard GSD, Yu is the Professor and founding dean of Peking University College of Architecture and Landscape, founder and design principal of Turenscape that practices globally. He is a strong advocate of ecological security and "Sponge Cities'' that have been adopted by the Chinese government for the nationwide ecological campaign. His innovative approach to urban planning and design is implemented in over 200 cities in China and beyond, and has significantly impacted national policies for improving the environment in China. His projects have won numerous international design awards including 14 ASLA Excellence and Honor Awards (American Society of Landscape Architects), 5 WAF Best Landscape of the Year Award (World Archi. Festival). He was an elected member of the American Academy of Arts and Sciences, and a fellow of the American Society of Landscape Architects. He is a recipient of the Doctor Honoris Causa from Sapienza University of Rome and Honorary Doctorate from Norwegian University of Life Sciences. He received the 2020 IFLA Sir Geffrey Jellico Award -- the highest honour given by the International Federation of Landscape Architects, and the 2021 John Cobb Common Good Award for his contribution to the advancement of ecological philosophy and eco-civilization.

Dr Wendy Chen is an Associate Professor of the Department of Geography, and serves as the Director of the International Centre for China Development Studies, at the University of Hong Kong.

She currently serves as the Editor-in-Chief for Urban Forestry & Urban Greening, a top international journal in the field of urban greening design and management. She is the Deputy Coordinator for the Urban Forestry Unit under the International Union of Forest Research Organisations, and the Executive Board Member of Urban Forest Division, Chinese Society of Forestry.

Chen's research focuses on urban forestry, urban river restoration, environmental externality of urban planning and urban landscape design, urban environmental governance and environmental policies, as well as urban sustainability.

Professor Francesco Ferrini is the Full Professor at the Department of Agriculture, Food, Environment and Forestry, University of Florence (Italy); Dean of the School of Agriculture of the University of Florence from 2015 to 2020; and Member of the Academic Senate of the University of Florence President of the Plant Nursery District of Pistoia since 1st of July, 2021.

From 1990 he has published more than 340 scientific and technical papers in Italian and English in international referred and nationwide journals (102 indexed in Scopus, IF 26; 265 indexed in Google Scholar, IF 32). He has given more than 200 talks in several international and national congresses. In 2009 he was the recipient of the Fabio Rizzi Award for his constant commitment in the research and extension service in the field of Plant Nursery Science and of Urban Arboriculture and for his continuous activity with researchers and contractors all over the world. In 2010 he was the recipient of International L.C. Chadwick Award for Arboricultural Research Recipient: The L.C. Chadwick Award is granted to individuals to recognise research that has contributed valuable information to arboriculture.

In 2019 he received the Award of Merit, the highest honour bestowed by the International Society of Arboriculture, which recognises a career of outstanding, meritorious service in advancing the principles, ideals, and practice of arboriculture. Since 2010 he has had a role as a scientific consulting expert for the Ministry of the University and Research of Italy for the project related to the Agri-Food sector. In 2016 he was part of the ERANET LAC (Latin-American Caribbean Countries) Scientific Expert Committee for topic 1: Ecosystem-based adaptation and resilience.

Sara is a lecturer in urban forestry at the University of British Columbia. Her research focuses on how urban and suburban landscapes can be re-imagined to balance healthy forests with a range of co-benefits. Sara works across interdisciplinary boundaries due to her years of experience in landscape architecture, urban design, and urban forestry. She has expertise in large-scale sustainable community planning and climate change research projects and holds a Landscape Architecture degree from UBC. She recently worked as a lecturer in urban horticulture at the University of Melbourne's Burnley campus.

Dr. Linda Chalker-Scott has a Ph.D. in Horticulture from Oregon State University and is an ISA certified arborist and an ASCA consulting arborist. She is WSU's Extension Urban Horticulturist and a Professor in the Department of Horticulture, and holds two affiliate associate professor positions at University of Washington. She conducts research in applied plant and soil sciences, publishing the results in scientific articles and university Extension fact sheets. In 2020, she was named the new editor for the Western Arborist magazine.

Linda is also the award-winning author of five books: the horticultural myth-busting The Informed Gardener (2008) and The Informed Gardener Blooms Again (2010) from the University of Washington Press and Sustainable Landscapes and Gardens: Good Science – Practical Application (2009) from GFG Publishing, Inc., and How Plants Work: The Science Behind the Amazing Things Plants Do from Timber Press (2015). Her latest book is an update of Art Kruckeberg's Gardening with Native Plants of the Pacific Northwest from UW Press (2019), which has won several national awards since its publication.

In 2018 Linda was featured in a video series – The Science of Gardening – produced by The Great Courses. She also is one of the Garden Professors – a group of academic colleagues who educate and entertain through their blog and Facebook pages. Linda's educational contributions to science-based information have been recognized by such groups as Garden Communicators International, the National Association of County Agricultural Agents, and the International Association for Arboriculture.

DONG Hui, PhD; professoriate senior engineer; graduated from China Agricultural University with a doctorate degree in 2009. Dr DONG conducted a one-year academic visit at the University of Guelph, Canada, in 2007-2008 with sponsorship from China Scholarship Council. Currently, she is the director of the Botanical Research Center of Fairylake Botanical Garden under the Shenzhen and Chinese Academy of Sciences, and the deputy director of the Key Laboratory of Southern Subtropical Plant Diversity, Shenzhen.

With professional expertise in both agricultural insect and pest control, Dr DONG has long been engaged in pest and disease control for gardens and botanical gardens, as well as research on urban biodiversity. Since the beginning of her research career, she has led 9 completed R&D programmes (6 of which on provincial level), published 22 research papers (13 of which with SCI) and 6 books (3 of which sponsored by national publishing funds), and discovered 48 new insect species. Dr DONG has also been actively promoting popular science education utilising resources in society, with a view to developing young people's scientific literacy. Her work takes various forms, including talks, exhibitions, field studies, etc. such as "International Butterfly Counting Day", "Zhu Meng Xian Hu" Youth Research and Education Summer Camp, "Bees and the Urban Environment", as well as other science promotion activities. She was awarded the title of "Outstanding Engineer" at the first Outstanding Technological Talent Award for Shenzhen Engineers in December 2020, and received a second class Shenzhen Scientific and Technological Progress Award in December 2019, and the IBC Contribution Award from the Botanical Society of China in 2018.

Senior Engineer Professor, registered construction engineer, ISA Certified Arborist. Expert in science communication of landscape architecture of Chinese Society of Landscape Architecture. PhD candidate, Civil Hydraulics (Landscape Architecture), South China University of Technology. Given lectures on Tree Pruning, Greening Emergency Rescue and Tree Risk Assessment technology for Macao Municipal Affairs Bureau, Macau University, landscape management department in Guangzhou, Xiamen, Jiangmen, Zhuhai, Zhanjiang etc. Mainly engaged in the Landscape architecture engineering and technology, and the research on landscape plants. In recent years, Huang Songyi has directed and participated in some research projects, which are related with ecology and landscape. And these research projects are in accordance with the South China characters, which contain the applications of the urban trees in security and ornamental. Such as "The Evaluation System of Tree Risk Assessment in Three Species of Street Trees in Guangzhou", "Germplasm Resource Identification and Flowering regulation in Ceiba speciosa", etc. She has presided and compiled "Greening Emergency Rescue, Tree Pruning and Rejuvenation Guideline after Typhoon in Guangzhou", "The Trees' Pruning Guideline after Typhoon in Zhuhai", "The Identify and Application of Common Landscape Plants in South China (Trees article, Shrubs and Lianas article)", "A specific plan for Typhoon in city afforestation" etc.

Dr Jiang Bin is a tenured Associate Professor in the Department of Architecture at the University of Hong Kong. He has a PhD from the University of Illinois and is an advocate of the "Healthy City & Healthy Landscape" campaign in East Asia. Trained as a landscape architect with a background in design, humanity, and environment psychology, Jiang's expertise includes the impacts of built environments on human health and wellbeing, environmental justice and security, and landscape empowerment of deprived communities.

Jiang's research has been supported by GRF, NSF, and many other national and local grants. Jiang ranks as the 49th most cited scholar in the field of Landscape Architecture on Google Scholar. He has published more than 32 journal articles in influential peer-reviewed journals, 31 proceedings in international conferences, and one book as a solo editor by Springer. His work has significantly impacted governmental and professional institutions, such as the World Health Organization, USA Forest Service, American Society of Landscape Architects (ASLA). His work has been reported by major global news sources, such as New York Times, Mail Online, Telegraph, Medical Xpress, and Daily Mail.

In addition, he has delivered nine keynote speeches, eight plenary lectures, and 20 other invited speeches since 2013. Jiang serves as a chair of the Research and Methods Track, Conference of the Council of Educators in Landscape Architecture (USA). He is a fellow of the China Society for Urban Studies and a consultant expert for many governmental and professional organizations. Jiang also serves on the editorial boards of academic journals.

Dr Jiang has more than fifteen years' experience in design practice. He worked for Turenscape (Beijing), EADG (Shanghai), and Peter Walker & Partners (PWP, California). He initiated a landscape empowerment project in South China and the work has been presented in YiXi, a prestigious public lecture forum. The book Landscape Empowerment has been published by Springer Nature in 2021.

Dr Anthony Leung is an Associate Professor in the Department of Civil & Environmental Engineering and the Associate Director of the Geotechnical Centrifuge Facility (GCF) at the HKUST. His research over the last 10 years focuses on developing nature-based solutions including the use of plants to combat the negative impact of environmental change on civil engineering infrastructure such as slopes. His research findings are synthesised in a textbook ‘Plant Soil Slope Interaction'. His recent research shifts to the fundamentals of wind-tree-soil interaction for the stability of urban trees. Dr Leung is the awardee of the 2019 Excellent Youth Scholar (EYS) of the National Natural Science Foundation of China (NSFC). He is currently serving the Editorial Boards of multiple international journals and is also the current member of the Urban Forestry Advisory Board Panel for the GLTMS, Development Bureau and the Geotechnical Division of the Hong Kong Institute of Engineers (HKIE).

LI Zhiqi, female, born in 1979; PhD; graduate of the Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences; director of the Center of Ecological Information under Guangzhou Institute of Forestry and Landscape Architecture; deputy director of Guangzhou National Field Station for Scientific Observation and Research of Urban Ecosystem, Guangdong.

Ms LI mainly engages in assessment on functions of urban ecosystem services, eco-monitoring, as well as scientific research and technical services regarding biodiversity conservation, etc., with substantial practical experience in forestry and landscape information construction. She has led or taken part in over 20 scientific studies or programmes on provincial or municipal levels. She has also led and taken part in compiling 5 sets of standard specifications. She has published over 20 papers, co-edited 1 book, applied for 3 patents and 5 copyrights of software programs. She participated in creating platforms such as Guangzhou Municipal Key Laboratory of Landscape Architecture, Guangdong Research Center of Urban Landscape Engineering Techniques, Guangzhou Urban Green Space Monitoring Station, Guangzhou National Field Station for Scientific Observation and Research of Urban Ecosystem, Guangdong, etc. Currently, Ms LI is leading projects such as the "Monitoring, Analysis and Study of the Ecosystem Efficacy of Guangzhou's Urban Forest", taking part in the "Research on Urban Forest Key Technologies in Response to Green Urbanisation in China and Europe" (2021YFE0193200), which is a specialised key project of inter-governmental and international cooperation in technology and innovation under the National Key Research and Development Programme.

Associate Professor in Nanjing Technical University, China. He received the PhD in Landscape Architecture at the Tongji University, China, in 2019, then obtained the CSC-DAAD postdoc scholarship and started the postdoctoral research at the Technical University of Dresden, Germany. He was also awarded the Dresden Junior Fellowship Program in 2021. His research was focused on the adaptability assessment of urban trees in response to Climate Change.

Professor Bum-Jin PARK has two PhD degrees of 'ergonomics of forest work' and 'forest therapy'. He is currently working as Professor in the Department of Environment and Forest Resources, Chungnam National University. He has authored and co-authored several national and international publications and also worked as a reviewer for reputed professional journals. He has an active association with different societies and academies around the world. He made his mark in the scientific community with the contributions and wide recognition from honourable subject experts around the world. He has received several awards for the contributions to the scientific community. His major research interest involves therapeutic effects of the forest environment on the human body and mind.

Ms N. T. PONG is a Chartered Member of the Landscape Institute (UK) and Registered Landscape Architect (HK). She involved in the landscape design projects for Milton Keynes new town development in UK for several years before serving the HK SAR Government. She is currently the Senior Landscape Architect in the Sustainable Lantau Office of Civil Engineering and Development Department and worked at the Development Bureau as an Assistant Secretary in the Greening, Landscape and Tree Management Section promoting new greening technology in Hong Kong. Her professional portfolio covers landscape planning, design and project management, landscape and visual impact assessment, streetscape enhancement schemes, sustainable blue and green infrastructure and urban forestry study.

Dr Shi graduated from Tsinghua University, Beijing, with the awards of B.Arch. and M.Eng. in Landscape Architecture, and further obtained her Ph.D. in Landscape Architecture from the University of Hong Kong. From October 2012 to August 2019, she worked as Teaching Fellow and later Assistant Professor in the Programme of Landscape Architecture at Technological and Higher Education Institute of Hong Kong (THEi). Since September 2019, she has been working as Assistant Professor at Department of Landscape Architecture, Tsinghua University, Beijing.

Dr Shi's research mainly focuses on well-being promoting landscape planning and design, evidence-based design, and post-occupancy evaluation. She is the Committee member of Health-Promoting Landscape and Horticultural Therapy Committee, Theory and History Committee under Chinese Society of Landscape Architecture; Member of Flower Landscape Branch of China Flower Association; Deputy Director of Green Therapy and Health-Promoting Landscape Research Center at School of Architecture, Tsinghua University. Dr Shi is experienced in research and education. She has published nearly 20 research articles in Chinese core journals, English SSCI/SCI journals, and high-end academic conferences in China and abroad, as first or corresponding author. Besides, Dr Shi has also hosted and participated in a number of research and practice projects, and instructed student projects to succeed in competitions.

Studying trees in different biomes around the world, Alexia Stokes focuses on tree root growth and biophysical interactions in soil. She uses knowledge to find solutions for stabilizing soil on slopes and improving tree anchorage during storms. More recently working on microbial interactions in soil, Alexia aims to link belowground biodiversity with soil structure and examine the implications for tree health. Alexia has published more than 100 journal papers since her PhD at the University of York (UK) and is now a senior scientist at INRAE Montpellier (France).

WANG Cheng, PhD; Researcher; Chief Specialist at the Research Institute of Forestry of the Chinese Academy of Forestry; Supervisor for PhD candidates; Executive Deputy Director of the Urban Forest Research Centre of the National Forestry and Grassland Administration; Editor-in-Chief of the Journal of Chinese Urban Forestry; Chairman of the Urban Forestry Branch of the Chinese Society of Forestry; Chairman of the Urban Forestry National Innovation Alliance.

Dr WANG has long been engaged in scientific research in urban forestry and landscape ecology. He has launched creative research and practice with guiding value in areas including theories of construction of forest cities in China, development planning for forest cities, prevention of plant-caused pollution in urban area, and biodiversity of urban forest. Under Dr WANG's guidance, more than 50 scientific research topics on urban forestry have been completed, and forest city planning has been done for over 60 cities including Beijing, Guangzhou, Shenzhen and Xiamen. Also, he led the compilation of major planning such as the "National Forest City Development Plan 2018-2025", "Beijing Forest City Development Plan 2018-2035", "Xiong'an Forest City Construction Specialised Plan", and "Fuzhou City Binhai New Town Forest City Construction Master Plan 2017-2030". In addition, he presided over the compilation of "National Forest City Evaluation Indicators" – a set of national standards.

Dr WANG has published over 100 academic articles and is the recipient of seven national and provincial awards including a second class State Scientific and Technological Progress Award and a first class LIANG Xi Forestry Science and Technology Award. He was named "Outstanding Youth of the Central State Organs" in 2007, and received the award of "Advanced Individual with Outstanding Contributions to National Ecological Construction" in 2016. Currently, he is leading projects including "Construction Planning for the Beijing, Tianjin, Hebei Forest City Cluster" and "Functions and Dynamic Changes of the Ecosystem Services of our Country's Urban Forests", and "Research on Urban Forest Key Technologies in Response to Green Urbanisation in China and Europe", which is a specialised key project of inter-governmental and international cooperation in technology and innovation under the National Key Research and Development Programme (2021YFE0193200)".

Professor WEN graduated from the College of Forestry of the Beijing Forestry University with a degree in forest pest control in 1984. He obtained a doctorate degree from the University of Tokyo in 2000. From July 1984 to February 2008, he worked at the Institute of Forestry Sciences (林科院) in Hebei province. Since March 2008, he has worked at the Research Centre of Forest Protection (森林保護教研室) of the College of Forestry, South China Agricultural University. He mainly engages in teaching and research in areas including the biological ecology of forest entomology like Monochamus alternatus, Dendrolimus and Heortia vitessoides, the chemical substances in pest pheromones and their application, and the integrated pollution-free pest control techniques. Major scientific research projects he has undertaken include the component evaluation and signal transmission of sex pheromones of Heortia vitessoides (a project of the National Natural Science Foundation of China, 2013-2016), the study of the sex pheromones of three major fruit tree pests (a sub-project of the National Agricultural Public Welfare Industry Scientific Research, 2012-2016), and the research, development and demonstration of the high-efficacy Monachamus alternatus attractant technology (a sub-project of the National Agriculture Nonprofit Industry Research Project, 2013-2015). He has been awarded a Third Class State Scientific and Technological Progress Award, and two First Class, one Second Class and three Third Class Provincial Scientific and Technological Progress Awards. On top of being a recipient of special government allowances of the State Council, he has also been selected as one of the young and middle-aged experts with outstanding contributions in Hebei province, and awarded the Hebei Province May Fourth Youth Medal.

Ir Thomas Wong joined the Government of HKSAR in 1999 and worked in various government departments and bureaux. He is currently the Head of the Drainage Projects Division of the Drainage Services Department, leading his team of engineers, architects and landscape architects in planning, designing and implementing various drainage projects. Thomas is now working on revitalising a number of channelised drainage nullahs located in the densely populated areas of Hong Kong, with the goals to allow the public to enjoy river facilities and experience the multiple values of water bodies in the heart of the city. Thomas also promotes the land co-use concept in his other drainage projects by integrating recreational spaces into the infrastructures for stormwater storage.

Professor XIAO Jieshu comes from Guangzhou in Guangdong. She is a senior engineer of landscape architecture design at the rank of professor with 33 years' experience in this profession and currently working as the Chief Landscape Architect in Shenzhen Beilinyuan Landscape and Construction Planning Design Institute Co. Ltd. The honorary titles of "Guangdong Top Ten Landscape Architects", "Outstanding Landscape Architect" of exploration and design in Shenzhen for the first award presentation and "Top Ten Young Landscape Architecture Designers" of exploration and design in Shenzhen for the third award presentation were conferred on her in November 2019, 2016 and 2011 respectively. Since 2001, she has been selected for a series of expert databases of the Planning Bureau and Urban Management Bureau of Shenzhen Municipal Government, and so on. She was engaged as an expert reviewer for exploration and design award by the China Engineering and Consulting Association in March 2012. Also, she has been engaged as one of the first batch of national experts on science communication of landscape by the Chinese Institute of Landscape Gardening, Deputy Director of the Landscape Plants and Flower Borders Committee of the Guangdong Society of Landscape Architecture, and one of the first batch of experts for the expert database on urban and rural planning in Guangdong Province.

She has undertaken research on the impact of typhoons on landscape trees. Her thesis "Research on the Typhoon-resistant Ability of Landscape Trees in South China" has won the second prize in the thesis competition organised by the Guangdong Society of Landscape Architecture and has been published in the dual core professional journal "Chinese Landscape Architecture". In 2019, she delivered the report on "Exploration of Factors Affecting the Typhoon-resistant Ability of Landscape Trees" at the Seminar on Prevention of Typhoon Damages to the Landscape & Greening Industry in Guangdong, Hong Kong and Macau.

Other achievements: mainly participated in the "Evaluation of the Use of Ornamental Plants in the Living Environment, and Research and Demonstration of the High-efficacy Greening Configuration Technology", which is a key topic in science and technology to be tackled at the national level, to provide a scientific and objective basis for landscaping that is conducive to the creation of a healthy living environment; worked as the first associate editor in the fifth volume of the Illustrated Landscape Construction Drawings Series – Planting Design, which is the first illustrated book of construction drawings featuring planting design in China, and has been awarded the second prize of scientific progress by the Chinese Society of Landscape Architecture; co-edited the Design Specifications for Zoo, which has made up for the deficiency in this aspect in our country. More than 20 of the projects she has substantially participated in have received national awards. Her representative work includes: Shenzhen Bay Park, Shenzhen City Soil and Water Conservation Demonstration Park, Dapeng National Geopark, Huaqiao City Wetland Park, Futian Mangrove Park, etc. In particular, Shenzhen Bay Park and Shenzhen City Soil and Water Conservation Demonstration Park won the 9th International Federation of Landscape Architects' Award of Excellence in the Landscape Design Category and the President's Award in the Landscape Management Category (the highest award in this category) respectively.

Professor, PhD supervisor of College of Architecture and Urban Planning, Tongji University, Director of The Sub-Laboratory of Climate Change and Landscape Response in Key Laboratory of Ecology and Energy-Saving of Dense Habitats (Tongji University), Ministry of Education of China. Guest Professor of Northwest A & F University. Part-time postgraduate supervisor of East China Normal University, Chongqing Jiaotong University, Shanghai University of Applied Technology, Qingdao Agricultural University, etc. Member of IUCN/SSC, Member of Council of Chinese Society of Botany, Member of National Technical Committee of Standardization of Urban Landscape Architecture, expert and vice chairman of landscape plants in Chinese Society of Landscape Architecture.

Main research focuses on: landscape plants and applications, ecological and planting design, landscaping planning in response to climate change, regulation planning of landscape microclimate, scenic tourism area planning, urban ecological infrastructure planning, etc. has published more than 300 papers in journals, 6 monographs. He has chaired 1 international cooperation research project, 3 projects of China National Natural Science Foundation. The main projects of the design studio are Jinan Botanical Garden and Red-leaf Valley Ecological and Cultural Tourism area, Shandong Province; Sanya Nanshan Buddhist Culture Zone, Hainan Province; Pinger Port Control Detailed planning, Guangxi Zhuang Autonomous Region, etc.

Dr Allen Zhang, has been the Programme Leader for the degree programme in Horticulture, Arboriculture and Landscape Management (HALM) under the Faculty of Design and Environment, THEi since 2014.

Dr Zhang is recognised as a leading researcher in urban forestry and urban greening. He was invited by international top journals, such as Landscape and Urban Planning, Urban Forestry and Urban Greening, to be a reviewer. He has successfully submitted 13 research grant applications in the past five years, with a total awarded amount of over HK$20,000,000. He has published over 35 scientific papers and books and has accumulated more than 10 years of teaching and research experience, in both the conceptual and applied domains.

In Academic Year 2019/20, Dr Zhang won the Researcher Award in THEi Staff Awards in recognition of his significant achievements in applied research. Dr ZHANG's current research in THEi focuses on the Urban Horticulture, Urban Forestry and Urban Greening, Landscape Ecology and Restoration Ecology.

Dr Zhang is proactively involved in community services. He was invited as a keynote speaker by different organisations in different public seminars, such as the Leisure and Cultural Services Department, the Agriculture, Fisheries and Conservation Department, the Tree Management Office and the University of Hong Kong (HKU), to promote urban tree conservation and management. These public seminars have an impact on the increase of public awareness of urban tree management.

Prior to joining THEi, Dr Zhang was a postdoctoral fellow at the Department of Geography, HKU. His research project at HKU mainly focused on urban tree management. Dr ZHANG obtained his PhD from the Chinese University of Hong Kong (CUHK).