NG Sai Leung 伍世良

Research Projects


  • Consultancy Study to Analyze Broad Land Use Pattern in Hong Kong
  • FUNG Tung, NG Sai Leung
    10 October 2000
    Planning Department, HKSAR Government

    This project aims at providing an analysis of the broad land use pattern of Hong Kong through an integration of satellite images, existing digital databases and orthophotographs. By broad land use pattern, it denotes land use information to be generated at a scale of 1:75,000. The land use information to be produced includes a Land Utilisation Plan together with a Land Usage Table. The Land Utilisation Plan depicts the spatial distribution of land uses whilst the Land Usage Table shows the statistical summaries of land uses. The project duration is 5 months. Within this short period of time, this project makes use of advanced and appropriate remote sensing digital image analysis and change detection technologies together with geographic information systems to produce the Plan and Table cost-effectively. (SS20010)


  • ‘CUHK’ Hong Kong Quality of Life Index - Environmental Sub-Index
  • NG Sai Leung, TANG So Kum Catherine (Psychology)
    1 May 2006
    CUHK Research Committee Funding (Direct Grants)

    The CUHK Hong Kong Quality of Life Index, which aims to assess and monitor the quality of life in Hong Kong, is a composite index incorporating both objective and subjective measure. This index, developed by the Faculty of Social Science of The Chinese University of Hong Kong, employs data collected in representative sample surveys and official statistics. A wide range of life domains is covered and the year 2002 is taken as the base year of the study. Index scores demonstrate that in general the quality of life in Hong Kong has improved slightly in 2003 and more markedly in 2004. Scores of the composite index and the three sub-indices on sectorial performance are somewhat higher than those of the previous years. It is noteworthy that Hong Kong has made noticeable progress and performs as well as many economically advanced societies in certain life domains. Yet, the well-being of the people relies on further improvement in others. As part of the CUHK Hong Kong Quality of Life Index, the Environmental Sub-index consists of indicators measuring the quality of our surrounding environment, including air quality, water quality, noise level and recycle rate of municipal solid waste. (SS05740)


  • ‘CUHK’ Hong Kong Quality of Life Index – Environmental Sub-Index
  • NG Sai Leung, TANG So Kum Catherine (Obstetrics & Gynaecology)
    1 May 2007
    CUHK Research Committee Funding (Direct Grants)

    The CUHK Hong Kong Quality of Life Index, which aims to assess and monitor the quality of life in Hong Kong, is a composite index incorporating both objective and subjective measure. This index, developed by the Faculty of Social Science of The Chinese University of Hong Kong, employs data collected in representative sample surveys and official statistics. A wide range of life domains is covered and the year 2002 is taken as the base year to the study. Index scores demonstrate that in general the quality of life in Hong Kong has improved slightly in 2003 and more markedly in 2004. Scores of the composite index and the three sub-indices on sectorial performance are somewhat higher than those of the previous years. It is noteworthy that Hong Kong has made noticeable progress and performs as well as many economically advanced societies in certain life domains. Yet, the well-being of the people relies on further improvement in others. As part of the CUHK Hong Kong Quality of Life Index, the Economic Sub-index consists of indicators measuring the economic conditions of Hong Kong, including housing affordability ratio, rental index, unemployment rate, index of current economic conditions, real wage index, public expenditure on education as a proportion of the GDP and age participation rate for first-degree programmes and postgraduate programmes in local universities. (SS06936)


  • Questionnaire Surveys for Housing Estates under the Dry and Wet Waste Separation Pilot Programme
  • NG Sai Leung
    1 January 2004
    Environmental Protection Department, HKSAR Government

    In recent years, Government have been testing out various waste recovery systems in order to identify the modes that are the most cost-effective and will best suit local needs. A 12-month Dry and Wet Waste Separation Pilot Programme was launched in March 2003 in four housing estates in the Eastern District on Hong Kong Island (Aldrich Garden, Heng Fa Chuen (upper), LeSommet and Lei King Wan), with a view to testing and alternative mode of waste separation, collection and sorting in further enhancing the waste recovery rates and providing more convenience to residents. Households of the three captioned housing estates will be surveyed in order to determine the individual participation rates for the housing estates and overall participation rate for the Programme. Furthermore, this survey will gauge the preference of residents towards the dry and wet waste separation system against the 3-coloured waste separation bins system and other existing waste separation and recovery systems. (SS03868)


  • Survey of Community Attitudes to Waste Reduction and Recycling
  • NG Sai Leung
    1 November 2002
    Environment and Conservation Fund

    In Hong Kong, municipal wasteloads have increased an average of about 4% per year since late 1980s. It is expected that the remaining landfill space can last only for 10 to 15 years. In September 2001, the Secretary for the Environment and Food addressed that “reduction and recycling” is a key component in the waste management. In this year, the government has implemented a number of programmes to increase community involvement in reducing and recycling waste, including double the number of waste separation bins for recycling in public places to a total of 16,000; introduce a sustained public education programme to ensure that the general public is well informed on how to prevent waste production and how to separate the waste for recycling, etc. Much of the effort is targeted at households and individuals. The purpose of the project is to critically investigate the general public’s attitude, awareness and preference on waste reduction and recycling so that relevant information is collected for facilitating effective environmental management, and appropriate policy and legislation. (SS02779)


  • Can We Make Slopes Greener? A Critical Evaluation of Slope Bioengineering Measures In Hong Kong
  • NG Sai Leung, CHAU Kwai Cheong, MARAFA Lawal Mohammed
    1 January 2006
    Research Grants Council (Earmarked Grants)

    The hilly topography makes slopes an integral component of the urban cityscape in Hong Kong. In the old days, safety was the key factor under consideration but environmental aesthetics and ecological values were usually neglected. In recent years, slope safety and environmental concerns have received equal emphasis from the government. While shotcrete is still the main structure of the slope, it is overlaid with a thin layer of soil or raw straws to support the growth of vegetation. To date, about 400 slopes have been constructed or renovated involving the use of this slope design. However, there has been no research undertaken to evaluate their performance, apart from a few descriptive studies on vegetation cover and survival rate. This project aims at critically investigating the performance and sustainability of green slopes from a multi-disciplinary perspective. The objectives are threefold: (1) to review the performance of the existing slope greening techniques in terms of vegetation growth and public perception; (2) to identify the key ecological and environmental factors governing the success of slope bioengineering; and (3) to propose and evaluate the use of digested sludge as a soil-amendment material in slope greening works. The results and findings of the proposed study should greatly contribute to a better living environment in Hong Kong. (CU05634)



Research Publications


  • "A Diatom Model for Inferring Sea Level Change in the Coastal Waters of Hong Kong" (co-authored with SIN Fung Siu). Journal of Paleolmnology vol.30 no.4, Kluwer Academic Publishers, 2003.11. pp.427-440.
    (CUHK Library Call No: Available Online)



  • "Environmental Quality of Urban Parks and Open Spaces in Hong Kong" (co-authored with LAM Kin Che, HUI Wing Chi and CHAN Pak Kin). Environment Monitoring and Assessment vol.111. Springer, 2005. pp.55-73.
    (CUHK Library Call No: Available Online)



  • "Heavy Metal Contents and Magnetic Properties of Playground Dust in Hong Kong" (co-authored with CHAN Lung Sang, LAM Kin Che and CHAN Wing Kan ). Environmental Monitoring and Assessment vol.89, Netherlands: Kluwer Academic Publishers, 2003. pp.221-232.
    (CUHK Library Call No: Available Online)



  • "Magnetic Properties and Heavy Metal Contents of Contaminated Seabed Sediments of Penny’s Bay, Hong Kong" (co-authored with CHAN Lung Sang, A.M. Davis, YIM W.W.S. and YEUNG C.H.). Marine Pollution Bulletin vol. 42 Issue 7, USA: Elsevier Science, 2001.07. pp. 569-583.
    (CUHK Library Call No: UL Periodical GC1080.M35 v.42, no.7-12, 2001)



  • "Mapping the Broad Land Use Pattern of Hong Kong" (co-authored with FUNG Tung, KWAN Mei Chi May and YEUNG Shui Ling). Planning and Development: Journal of the Hong Kong Institute of Planners vol.17 no.2, Hong Kong SAR, 2001. pp.41-50.
    (CUHK Library Call No: UL Periodical HT169.H6 P5 v.16-17, 2000-01)



  • "Respiratory Suspended Particulate (RSP) Concentration and its Implications to Roadside Workers: A Case Study of Hong Kong" (co-authored with LAM Kin Che). Environmental Monitoring and Assessment vol.72, The Netherlands: Kluwer Academic Publishers, 2001. pp.235-247.
    (CUHK Library Call No: Available Online)



  • "Subjective Residential Environment and Its Implications for Quality of Life among University Students in Hong Kong". Social Indicators Research vol.71 no.1, Springer, 2005.03. pp.467-489.
    (CUHK Library Call No: UL Periodical HN25.S64 v.71-72, 2005)



  • 〈香港水土流失及其防治研究〉,《水土保持研究》,第8卷,第4期,中國:陝西科學技術出版社,2001.12,頁86-90。
    (CUHK Library Call No: Available Online)



  • 〈香港地表沉積物本底輻射特徵初探〉(與鄭公望及呂豐偉合著),《第三屆海峽兩岸三地及世界華人地質科學研討會補充論文摘要》,主辦單位為香港地質學會暨香港大學地球科學系,香港特別行政區,2001.12.19,頁111-114。



  • 《邁向廿一世紀的中國 : 環境、資源與可持續發展》(與林健枝及陳永勤合編),香港:香港中文大學香港亞太硏究所,1999。
    (CUHK Library Call No: UL HC430.E5 M35 1999 c.4; UL Reserve 4 hours HC430.E5 M35 1999; UL HK Studies HC430.E5 M35 1999 c.3; NA General Education HC430.E5 M35 1999 c.2)


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