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研究報告

Chapter 7 ECOLOGICAL FIELD SURVEY RESULTS - ECOLOGICAL VALUE ASSESSMENT

7.5 AREA AND PERCENTAGE SURVEYED OF HABITAT CATEGORIES
   
 

The total area surveyed under the present baseline survey and the percentage surveyed of each habitat relative to the area originally mapped are presented in Table 7.5a. The percentage calculated for each habitat type ranged from approximately 0.1% for Bare Rock or Soil and Grassland to 100% for Plantation or Plantation/Mixed Forest. The exceptionally low percentage of area surveyed (ie about 0.1%) recorded for Bare Rock or Soil and Grassland is due to the very limited effort (one day for each habitat type) devoted to the two habitats and the small area covered during field surveys in comparison to the total area identified for them on the base map. Apart from plantation, montane forest has also been substantially surveyed under the present study. The area surveyed/area left unsurveyed identified for each habitat type have been included as a factor for identifying information gaps filled by the field surveys and gaps yet to be filled (see Table 10.1a).

Table 7.5a Total Area and Percentage of Area Surveyed for Each Habitat Type

Habitat Type

Total Area (ha)

Percentage of Area Surveyed (%)

Fung Shui Foreste N/A N/A
Montane Forest 58.3 96.4
Lowland Forest 1,326.0 7.2
Mixed Shrubland 2,307.6 14.0
Freshwater/Brackish Wetland 284.8 24.3
Natural Watercourse 232.0 28.6
Seagrass Bede N/A N/A
Mangrove 1.0 0.36
Intertidal Mudflat 380.7 23.2
Shrubby Grassland 182.0 2.1
Baeckia Shrubland 174.7 2.9
Plantation or Plantation/Mixed Forest 25.9 100.0
Fishpond/Gei Wai 200.4 10.6
Sandy Shoref 8,743.6 5.8
Rocky Shoref 24,685.8 3.5
Cultivation 277.3 6.5
Bare Rock or Soil 2.0 0.14
Grassland 24.8 0.09
Modified Watercourse 98.6 3.5
Artificial Rocky/Hard Shorelinef 11,630.6 4.2
Golf Course/Urban Park 105.0 10.5
Quarry 109.4 49.6

e: As the habitat was represented as dot locations on the base map and therefore not applicable for spatial calculation.
f: As the habitat (or majority of it) was mapped as a linear component, the total "area" surveyed for the habitat is represented by the length (km) of the habitat.

   
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最近修訂日期: 二零零五年十二月二十二日