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研究報告

SECTION 3 NATURAL RESOURCES CAPITAL STOCK

3.6 Minerals, Aggregates and Energy
   
3.6.3 Sustainability Appraisal
   
3.6.3.1

In parallel with the situation regarding freshwater resources, Hong Kong's dearth of mineral, aggregates and energy supplies requires a reliance on external sources to meet current and/or future demands. In most cases, with the possible exception of sand and aggregate resources, this has been the situation for many years and stable supply routes have evolved to ensure timely and sufficient provision of resources.

   
3.6.3.2

Therefore although the resource supply issue is not critical, the by-products of the demand for these resources will have effects on other natural capital stock components in Hong Kong. For example, further exploitation of remaining sand resources may entail undesirable impacts to the marine environment, and continuation of inefficient and high emission power generation technologies will affect local air quality. The adverse effects of such resource use can be addressed by reducing demand, in the case of aggregates by increasing the recycling of construction and demolition material as fill or aggregate feed (see Paragraph 3.5.4.9 - Solid Waste), and in the case of energy resources by reducing wastage through policy incentives and community education.

   
3.6.3.3 Despite policy and technology developments to reduce the demand for current fuel resources (ie coal, natural gas, oil), it is expected that energy consumption will continue to increase over time in response to the same population and consumer behaviour pressures that drive the use of freshwater resources and solid waste generation. Nevertheless, long-term sustainability of energy resources can be enhanced by more efficient utilisation of non-renewable resources (eg cleaner-burning forms of transport, combined-cycle power generation, interconnection of Hong Kong generators). Following the progress in implementation of DSM, opportunities for further wide-reaching policies and standards for energy management, design and efficiency should also be pursued. To date, alternative and renewable energy technologies have not been adopted on a significant scale within Hong Kong, apart from a few isolated examples such as solar thermal installations for domestic hot water and swimming pool heating. Government has recently indicated its intention to devote greater attention to research the potential for applications of alternative and renewable energy sources in Hong Kong. These initiatives should allow Hong Kong to understand how it could improve the sustainability of its energy sector.
   
3.6.3.4 Reductions in the use of non-renewable energy resources, and better efficiency of use of all sources, will result in more sustainable resource utilisation, as well as produce important benefits for local air quality. Given that Hong Kong imports all of its energy resources, is already linked with the Mainland power grid (through the Daya Bay supply), and experiences the air quality effects of regional power generation practices, it is essential that Hong Kong's long-term energy planning be conducted taking into account regional developments and co-ordinated with that of the Mainland as appropriate.
   
3.6.3.5 The principal drivers, actions for change and unmitigated impacts relating to minerals, aggregates and energy are summarised in Figure 3.6a.

 

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最近修訂日期: 二零零五年十二月二十二日