❓ Hon Alison Xamon asks about using remote sensing data to estimate vegetation coverage on the Swan Coastal Plain. The Minister provides estimates of total vegetation cover but states that native vegetation cover cannot be estimated using this method.
AnsweredQoN 3333Legislative Council
QuestionView source ↗
I
refer to Department of Water and Environmental Regulation (DWER) analyses of remote sensing images that identify vegetation
changes (as per the answer to part 10 of question on notice 469 answered on 6
December 2017), and I ask: (a) can
these analyses be used to estimate vegetation coverage on the Swan Coastal
Plain; (b) if
yes to (a), could the Minister please provide estimates of vegetation coverage on
the Swan Coastal Plain as a snapshot at five-year intervals from 1990; (c) can
these analyses be used to estimate native vegetation coverage (solely) on the
Swan Coastal Plain; and (d) if yes to (d), could the Minister please provide
estimates of native vegetation coverage on the Swan Coastal Plain as a snapshot
at five-year intervals from 1990?
refer to Department of Water and Environmental Regulation (DWER) analyses of remote sensing images that identify vegetation
changes (as per the answer to part 10 of question on notice 469 answered on 6
December 2017), and I ask: (a) can
these analyses be used to estimate vegetation coverage on the Swan Coastal
Plain; (b) if
yes to (a), could the Minister please provide estimates of vegetation coverage on
the Swan Coastal Plain as a snapshot at five-year intervals from 1990; (c) can
these analyses be used to estimate native vegetation coverage (solely) on the
Swan Coastal Plain; and (d) if yes to (d), could the Minister please provide
estimates of native vegetation coverage on the Swan Coastal Plain as a snapshot
at five-year intervals from 1990?
AnswerView source ↗
Answered
24 November 2020
Responded by
Minister for Agriculture and Food
Response time
11 days
a. Yes.
b. The below table shows vegetation cover of the Swan Coastal Plain (SCP) estimated using remote sensing imagery. The column “Satellite coverage of the SCP (%)” shows the percentage of the region with valid satellite data to estimate vegetation cover.
Vegetation Cover (%)
Satellite Coverage of the SCP (%)
1990
78*
88
1995
75*
66
2000
80
96
2005
77
97
2010
75
97
2015
78
97
2020
76
97
*less than 90% of the SCP was included in this estimate
c. No.
d. Not applicable.
b. The below table shows vegetation cover of the Swan Coastal Plain (SCP) estimated using remote sensing imagery. The column “Satellite coverage of the SCP (%)” shows the percentage of the region with valid satellite data to estimate vegetation cover.
Vegetation Cover (%)
Satellite Coverage of the SCP (%)
1990
78*
88
1995
75*
66
2000
80
96
2005
77
97
2010
75
97
2015
78
97
2020
76
97
*less than 90% of the SCP was included in this estimate
c. No.
d. Not applicable.
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