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研究報告

Chapter 7 ECOLOGICAL FIELD SURVEY RESULTS - ECOLOGICAL VALUE ASSESSMENT

7.1 ECOLOGICAL VALUE ADJUSTMENT BASED ON FIELD SURVEYS
   
7.1.1 Fung Shui Forest (Indicative Ecological Value: High)
   

All the fung shui forests surveyed were located behind, or close to, villages and were generally well preserved. The majority of the fung shui forests surveyed were small in size and subject to little or no human disturbance. Many of the fung shui forests surveyed showed a closed canopy and attained a canopy height of between 12 - 20 m. Canopy height as high as 25 m was recorded for the fung shui forest at Yim Tso Ha (Site 6a). Dense understorey growth was generally observed for most of the surveyed habitats. The protected plant species Pavetta hongkongensis were recorded in some of the survey sites (including North Lantau (Sites 1a and 1b), Lam Tsuen (Site 5a), Yim Tso Ha (Site 6a) and Sai Kung areas (Sites 7b, 7d and 8a)). Rare species Pygeum topengii and Xylosma longifolium were observed at Lam Tsuen (Site 5b) and Yim Tso Ha (Site 6b), respectively (see Table G1 of Annex G for details).

Most of the survey sites are considered to have a high ecological value (ie same as their indicative ecological value). Two patches (Sites 3b and 4b) have been downgraded from high to medium ecological value as their understorey vegetation has been cleared and the areas become a playground whilst their canopy layers remain intact (Table 7.1a). While most of the fung shui forests remain intact or only slightly disturbed by development, there are areas where disturbance to the habitat (due to development) is great and have resulted in degradation of habitat quality.

Table 7.1a Rationale for Ecological Value Adjustment of Fung Shui Forest Habitats based on Field Surveys
Site No. Site Name Sub-site Ecological Value After Field Assessment Rationale for Ecological Value Re-adjustment
3 Ma On Kong b Medium Understorey cleared to become a playground although canopy remained intact.
4 Pat Heung b Medium Understorey cleared to become a playground although canopy remained intact.
   
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最近修訂日期: 二零零五年十二月二十二日