Transcript Ecological Impact Assessment

Queen’s College Old Boys’ Association Secondary
School – Group 2
Since there are a proposed large scale
private housing development in Chuen
Lung, which is a valuable environment
for the organisms, such as salamanders
there. In the process of construction,
there must be great damage to the
habitats there, so an ecological impact
assessment must be done to avoid
breaking the balance between
environment and economy.
Weather condition
Date : 1-3-2006
Temperature : Maximum – 14C
Minimum – 9C
Average -10C
Weather : Cold, Dry, Windy,
Cloudy
Habitat
A - Grassland
B – Shrubland
C – Woodland
D – Freshwater Stream
E – Abandoned Farmland
Vegetation survey
No. of Tree Species
Few
More Abundant Species
Peach(桃樹)
No. of Shrub Species
Many
More Abundant Species
Lantana(馬櫻丹)
No. of Herb species
Many
More Abundant Species
Day-Flower(竹節
草)/Mile – a –
Minuteweed(薇甘菊)
Mammal survey
Mammal
Observed
Cow
Dog
Location
Abandoned
Farmland
Anywhere
Butterfly and dragonfly
Butterflies
observed
Larvae
(蝴蝶幼蟲)
Common
Hedge Blue
(紐灰蝶)
Location
Grassland
Grassland
Stream survey
Insect, Larvae, Nymphs Observed
Name
(水蜈
蚣)
No. of
species
1
Dragonfly Mayfly( Water
nymphs( 五月飛) bettle
蜻蜓若蟲) nymphs larva(龍
虱幼蟲)
Some
7-8
1
Water
skater(水
黽)
2
Snails, Clams observed
Name
No. of
Species
Large
Stream
Snail(大
河螺)
many
Reservoir
Snail(水
塘螺)
Ramshorn
Snail(凸
旋螺)
many
many
Fishes Observed
Name
Freshwater
Goby(林哥魚)
No. of Species
Many
Others Observed
Name
No. of
Species
Salamander Greater
Smartweed Water
(蠑螈)
Buckweed( (火炭母) Smarted
浮萍)
(水蓼)
1
Many
Many
Many
Evaluation of ecological impact
Possible Degree
impact of
impact
Brief description Mitigation
measures
Habitat
loss
-Removing trees
will destroy
habitat
-Animals lose
their habitat to live
on
Severe
-Replant
-Reserving
plants &
animals
Possible
impact
Degree
of
impact
Brief
description
Mitigation
measures
Waste and
contamination
Severe
Construction
wastes and
domestic
wastes
-Separating
sewage
before
releasing
-Make water
treatment
plant
Possible
impact
Degree of Brief
impact
description
Soil
Severe
erosion
and
sedimenta
tion
Mitigation
measures
-Deforestation -Use concrete
to cover the
-No root to
catch the soil land
firmly → soil
erosion↑
-Landslide
Possible
impact
Degree of Brief
impact
description
Mitigation
measures
Air
pollution
moderate
-Limiting the
cars entry
amount
-Cars
-Machine
Possible
impact
Degree of Brief
impact
description
Noise and Severe
lighting
Big noise
→Bird leave
this habitat
Mitigation
measures
Limit the
volume of
noise in the
night
Possible
impact
Degree of Brief
impact
description
Fragmenta moderate
tion
-Car park stop
the stream
Mitigation
measures
-No car park
in this area
Possible
impact
Degree of Brief
impact
description
Extraction Minor
of water
from
streams
No water flow
to the later part
of stream,
affecting
habitat
Mitigation
measures
Prepare water
for
construction
use
themselves
Important of each habitat
Grassland,shrubland & woodland:
- Fruits of the plants can provide
foods or medicine for villagers and
wild animals
-habitat for rare insects and animals
-Mainly balance the abundance of
CO2 and O2 in the atmosphere
Conclusion