[en]+[zh]Study on Forest Landscape Restoration - ITTO

7 Analyzing landscape pattern at community level 209
7.3 Forest landscape dynamics
7. 3. 1 Change on g<strong>en</strong>eral features of landscape
The demonstration area showed differ<strong>en</strong>t tr<strong>en</strong>ds in the period of 1991 - 1999
and 1999 - 2008 (see Table 7.3). Non-paddy Field andDegraded Primary
Forest were the matrix of the demonstration area in 1990. The number of patches
had increased from 124 to 162 and patch d<strong>en</strong>sity, edge d<strong>en</strong>sity, mean
patch shape index had also increased significantly while the MPS had decreased
from 3. 22 ha in 1990 to 2. 47 ha in 1999, showing that the landscape
fragm<strong>en</strong>tation had become more severely, the boundaries of each patch had
become more irregular in this period. With the increase of Plantation and the
reduction of Degraded Primary Forest and Secondary Forest, Plantation, Nonpaddy
Field and Degraded Primary Forest have become the main types in the
landscape in 1999 and landscape dominance decreased. This result can also
be got from changes on SDI, SEI and D. SDI has increased from 1. 45 in
1990 to 1. 54 while SEI from 0.70 to O. 74. During the period of 1999 to
2009, the number of patches in demonstration area has reduced from 162 to
159 while MPS has increased from 2.47 ha to 2.51 ha, which indicated that
landscape fragm<strong>en</strong>tation and landscape heterog<strong>en</strong>eity decreased. The decrease
of MSI also showed that the shape of patches has become regular. The SDI
and SEI were 1. 35 and O. 65 respectively in 2009. With the sharply increase
of Plantation during 1999 to 2009, Non-paddy Field only distributed among
plantations and would not be the main type any more. Plantation was the main
type in demonstration area while degraded primary forest only distributed in
hills not easy to access for local people.
Table 7.3 Changes on g<strong>en</strong>eral features of Dagan FLR demonstration area
Period Area NP PD ED
( year) (ha) ( n) (nll00ha) ( rniha)
MSI SDI SEI D
1990 399.48 124 31. 04 309. 73 1. 74 1. 45 O. 70 0.63
1999 399.48 162 40.55 388.47 1. 85 1. 54 O. 74 0.54
2009 399.48 159 39.80 329. 12 1. 63 1. 35 0.65 O. 73
7.3.2 Change on landscape elem<strong>en</strong>t types
Changes on landscape pattern of Dagan demonstration area are mainly reflected
in the decrease of Non-paddy Field, Degraded Primary Forest and the in-