Protection
of Wetlands in Hong Kong
(ACE
Paper 41/2000)
For discussion
PURPOSE
This paper informs Members of the Administration's policy on the
protection of wetlands and the position of the ongoing review of
conservation policy which aims at giving better protection to our
natural heritage including wetlands.
BACKGROUND
- This paper was prepared
at the request of the Legislative Council Panel on Environmental
Affairs and was discussed at its meeting on 5 December 2000.
- Wetlands include
a wide range of habitats from shores and estuaries to inland water
bodies such as marshes, swamps, ponds, rivers, irrigated lands,
reservoirs and lakes. Wetlands generally support rich biodiversity
and perform a range of environmental functions, such as breeding
and nursery grounds for wildlife and habitats for birds and many
other species. They help purify water by acting like filters along
waterways, provide coastal protection and serve as temporary storage
of overflowing water to reduce floods. They also provide economic
benefits such as fisheries, recreation and tourism opportunities.
- Hong Kong has an
international obligation to protect wetlands as China is a party
to the Ramsar Convention. The Ramsar Convention (i.e. the Convention
on Wetlands of International Importance especially as Waterfowl
Habitat) which came into effect in 1975 aims to provide for international
cooperation in the conservation and wise use of wetlands.
- Wetlands are important
to Hong Kong because they -
- function as "green
lungs" for the increasingly developed lowland areas;
- maintain an educational
and scientific resource for the community;
- perform environmental
and ecological functions; and
- provide a recreational
resource.
- According to a survey
conducted as part of an on-going Study on Wetland Compensation,
Hong Kong now has about 10,000 hectares of wetlands broken down
by the following types-
| Wetland
Type |
1999
Total(Hectares) |
%
of Total |
| Reservoirs |
2,477 |
25% |
| Freshwater
marshes / Pools |
1,621 |
16% |
| Fishponds |
1,596 |
16% |
| Seasonally
Flooded Agriculture Land |
1,554 |
16% |
| Irrigated
Land |
1,232 |
12% |
| Drainage
Channels |
423 |
4% |
| Rivers/Streams/Creeks |
393 |
4% |
| Freshwater
Shrub Marshlands |
272 |
3% |
| Gei
Wais |
194 |
2% |
| Freshwater
Tree Marshlands |
105 |
1% |
| Saline
/ Brackish Marsh |
103 |
1% |
|
Total |
9,970 |
100% |
Reservoirs which are
mostly inside country parks make up the largest proportion of the
wetlands (25%), followed by freshwater marshes / pools (16%), fishponds
(16%), seasonally flooded agriculture land (16%) and irrigated land
(12%). Altogether they make up 85% of the total wetlands in Hong
Kong. The majority of the wetlands are found in the northwestern
and northeastern parts of the New Territories, each accounting for
36% and 43% of the total area respectively. The ecological importance
of these areas varies both in relation to the type of wetland and
the location.
POLICY
General
- In line with our
international obligations to conserve and promote the wise use
of wetland areas and in recognition of their value to our natural
heritage and the diversity and landscape of Hong Kong, our policy
is to prevent the loss of important wetland resources, to minimize
detrimental impacts on wetlands from adjacent development; and
to compensate for losses which are incurred due to unavoidable
development projects. Ramsar Site
- Under this policy,
in 1995 we designated the Mai Po and Inner Deep Bay area covering
about 1,500 hectares under the Ramsar Convention as a wetland
of international importance (i.e. a Ramsar site). This "Ramsar
site" comprises the most important and widest stretch of wetland
habitats in Hong Kong. It supports large numbers of migratory
birds. The Agriculture, Fisheries and Conservation Department
(AFCD) is the Ramsar Administrative Authority responsible for
the conservation management of the Ramsar site. In this respect,
AFCD has been working in close partnership with green groups including
the World Wide Fund for Nature Hong Kong, the Conservancy Association
and the Hong Kong Bird Watching Society. It has provided subventions
for them to conduct habitat management, community education and
bird population monitoring programmes at the Ramsar site. A Wetland
Advisory Committee was also established in 1998 to advise the
AFCD on the implementation of the Ramsar Convention in Hong Kong,
the management of the Ramsar site and any other wetland related
conservation matters.
Landuse
Planning Control
- To protect the ecological
integrity of the Ramsar site from development, the Town Planning
Board has designated a Wetland Conservation Area (WCA) and a Wetland
Buffer Area (WBA) for the Deep Bay area.
- The WCA of about
1,600 hectares comprises the existing and contiguous fish ponds
which cover about 750 hectares on the landward side of the Ramsar
site. The planning intention is to conserve the ecological value
of these fish ponds, as they form an integral part of the wetland
ecosystem in the Deep Bay area. New development is not allowed
within the WCA unless it is required to support conservation or
environmental education or it is an essential infrastructural
project with overriding public interest. Any such development
has to be supported by an ecological impact assessment to demonstrate
that the development would not result in a net loss of wetland
functions and negative disturbance impacts.
- The WBA of about
1,000 hectares generally comprises the strip of land of about
500m wide along the landward boundary of the WCA. The planning
intention is to protect the ecological integrity of wetlands within
the WCA and prevent any development that would have a negative
off-site disturbance impact on the WCA. In general, development
within the WBA has to be subject to an ecological impact assessment
to demonstrate that adverse impacts could be mitigated.
- Outside the Deep
Bay area, wetlands of significant conservation concern are zoned
"Sites of Special Scientific Interest", "Conservation Areas" and
"Coastal Protection Areas" where development is not normally permitted.
Other wetlands are zoned "Agriculture" and "Green Belt" where
permitted uses not requiring approvals from the Town Planning
Board are generally restrictive. There are also wetlands which
are protected within existing country parks. Environmental Impact
Assessment 13. Apart from landuse controls, the Environmental
Impact Assessment (EIA) Ordinance provides a mechanism for the
protection of wetlands. Under this Ordinance, proponents of designated
projects that may cause disturbance to wetlands of ecological
importance have to identify mitigation measures in the project
planning process. The objective is to avoid if avoidance is at
all possible and if not, to mitigate any negative impacts and
compensate for any losses incurred during the construction and
operation of the projects so that the wetland functions are maintained.
Work cannot start unless the Director of Environmental Protection
(DEP) has approved the EIA report and issued an environmental
permit under the EIA Ordinance.
- To allow for public
participation in the scrutiny of EIA reports, the EIA Ordinance
provides that members of the public may give their written comments
to DEP on the EIA reports when they are exhibited for public inspection.
DEP is obliged to consider such comments received from the public
and also those from the Advisory Council on the Environment in
considering whether to approve or reject an EIA report. This consultation
process ensures transparency of the EIA mechanism. In examining
the EIA reports, DEP has to follow the procedures, guidelines
and criteria for assessment set out in the EIA Ordinance and the
Technical Memorandum on the EIA Process. DEP is required to take
advice from relevant government departments on specific subject
areas, e.g. AFCD's advice on nature conservation and ecological
assessment. The EIA Ordinance also has provisions for an appeal
mechanism whereby aggrieved parties could appeal against DEP's
rejection of EIA reports.
STUDY
ON WETLAND COMPENSATION
- Since wetlands in
the New Territories are being subjected to increasing development
pressures, it is important to assess these projects' cumulative
impacts on wetland resources and to identify suitable areas for
compensation purpose. However, the project-by-project assessment
approach under the EIA Ordinance is not fully effective in identifying
and compensating for the cumulative effects of wetland loss. We
also lack systematic baseline information on the wetland types
or stock and their ecological value. Against this background,
AFCD commissioned the Study on Wetland Compensation in 1998. Its
objectives are to conduct a survey of existing wetlands; to develop
criteria for ranking their ecological importance; to assess the
cumulative impact of development projects, and, to propose plans
for the conservation of important wetlands.
CONSERVATION
POLICY REVIEW
- In parallel with
the on-going Study on Wetland Compensation which will make recommendations
specifically on wetlands, we are conducting a comprehensive review
of our nature conservation policy which will address the adequacy
of conservation measures for all types of natural habitats.
- As outlined in paragraph
6, our current nature conservation policy seeks to protect existing
conservation areas, identify new areas of ecological value for
conservation and compensate for areas which merit conservation
but which are unavoidably lost to essential development projects.
We currently implement this policy through the designation of
country parks and marine parks, the zoning of areas of importance
for conservation as Sites of Special Scientific Interest or Conservation
Areas, and the enforcement of the Environmental Impact Assessment
Ordinance. The existing conservation mechanisms have protected
ecologically important sites from development threats. But there
are a number of areas which we need to examine in detail so as
to protect and sustain the ecological value of important sites,
particularly in private lots. These include the following -
- developing a
reliable database and priority system for ecological assets;
- possible extension
of existing protected areas, i.e. country parks and conservation-type
zonings, to cover other ecologically important sites;
- ownership and
conservation management of ecologically important sites;
- the need to build
up a widely acceptable mechanism to deal with conservation
of important habitats located on private land, as on one hand
some landowners have strong views on constraints imposed by
the Government on development potential of important ecological
sites situated in private lots while green groups on the other
hand criticize Government for failing to offer adequate protection
to such ecologically important sites; and
- resource implications
of any new measures.
- We are examining
these issues in the on-going comprehensive review of our nature
conservation policy. We will identify new mechanisms to strengthen
our conservation efforts and consult the public on our proposed
initiatives.
- To establish greater
certainty for planning purposes, AFCD is evaluating the results
of a biodiversity survey completed by The University of Hong Kong,
with a view to drawing up a priority list for conservation efforts.
AFCD's evaluation work will facilitate our nature conservation
policy review by identifying target areas for protection. The
findings of the Study on Wetland Compensation will also complement
our policy review by providing an analysis of the distribution
and abundance of wetlands. The Study will also provide recommendations
on further protection of wetlands taking into account the development
pressures they are subject to. We will co-ordinate the findings
of the policy review, the Study on Wetland Compensation and AFCD's
evaluation in order to propose new conservation measures for public
consultation in 2001.
CONCLUSION
- Members are invited
to note the contents of this paper.
Environment
and Food Bureau
Agriculture, Fisheries and Conservation Department
December 2000
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