Download Woodland-1

Woodland
Ecosystem
Q.2 There is NO significant differences
in community structure between the
two woodlands ?

In fact, there are significant differences
between two woodlands.
Woodland 1
Woodland 2
In woodland 1(Tree)

We can find different tree species
– Eg. Strophanthus Divaricatus (羊角拗),
Ilex asprella(梅葉冬青).
And there is NOT evenly distributed
in woodland 1.
 We can find different strata
 The trees do not have similar height

In woodland 2(Tree)

We can find same tree species
– Eg. Tistania conferta(紅膠木).
And the average spacing is more
uniform.
 And also have similar height.

In woodland 1, there is a natural
woodland(Less human impact)
In woodland 2, there is modified
woodland(More human impact)
Number of Species
12
Number of species
10
8
6
4
2
0
Woodland 1
Woodland 2
Different average height due to
different strata (Woodland 1)
Woodland 2 is modified
Average height
14
Average height
12
10
8
6
4
2
0
Woodland 1
Woodland 2
Summary on tree data(1 & 2)
14
12
10
8
Woodland 1
Woodland 2
6
4
2
0
No of species
Average height
(meter)
Average truck
circumference(M)
Average crown
width (M)
In woodland 1&2
(Shrubs & Saplings)
There are less shrubs and saplings in
woodland 1
 More numbers of shrubs and saplings
in woodland 2
 More numbers of species can be found
in woodland 2

More sunlight in woodland 2 due to
even distribution, so more numbers
of shrubs and saplings can be found
Number of total individual
30
Number
25
20
15
10
5
0
Woodland 1
Woodland 2
Summary on shrubs and Saplings
30
25
20
Woodland 1
Woodland 2
15
10
5
0
Total number of individuals Total number of species
Average height(M)


There is an error in our data collection.
Facts: more species in woodland 1
– Natural woodland
– In woodland 2, there is a steeper
gradient, so the species maybe less.
– (Only have better adapted plants)







Reasons: More Saplings
Transect
Wrong species identity
Solutions:
More transect
Longer transect
Use Quadrat
Description
More herbs can be found in woodland 2
 Average spacing is higher and more
species in woodland 1

More sunlight due to smaller crown(Woodland 2)
Number of herbs
30
Number
25
20
15
10
5
0
Woodland 1
Woodland 2
Summary on herbs
70
60
50
40
Woodland 1
Woodland 2
30
20
10
0
Average height(cm)
Frequency
No of species