3.3. Frequency of selection when planning for ecosystem services
and aligned with biodiversity priorities
The degree of flexibility when planning for individual ecosystem
services differed between ecosystem services as reflected in
patterns of selection of planning units. Planning for water services
showed that 19% of catchments had frequency values >0.5 for
surface water supply and 7% for water flow regulation. This implies
that only a few irreplaceable catchments contribute the most in
water supply and regulation services as demonstrated by the fact
that areas with frequency of >0.5 covered only 9% of the grassland
biome for water supply and 3% for water flow regulation. The
service of carbon sequestration was distributed throughout the
study area and was seen in the results where 30% of the catchments
(25% of the grassland) had frequency values >0.5 when planning
for carbon storage alone. However, there were few clusters in the
forest vegetation. Soil services were also distributed across the
study area with different sections of catchments contributing to
this service. Frequency maps of soil accumulation and soil retention
showed that 15% (12% of the grassland biome) and 19% (11% of the
grassland biome) of catchments respectively had values >0.5.
These catchments were found in different parts of eastern seaboard
for both services and a few in far north for soil accumulation.
Planning for all five services at once showed that few catchments
contributed significantly to all five services which were
highly irreplaceable. Results from Scenario 1 showed that 8% (4% of
grassland biome) of all catchments had frequencies >0.5. However,
the flexibility of catchments selected to meet target for ecosystem
services reduced as the target levels increased (Fig. 3). This is
expected because high targets indicate that more catchments are
ultimately needed to meet those targets. In Scenario 2, 33% (28% of
the grassland biome) of the catchments had a frequency value of
>0.5. Similarly, Scenario 3 results showed that a larger number of
catchments (>90%) had frequency values >0.5, but few catchments
(0.75. When biodiversity was introduced in
Scenario 4 as a cost layer, more catchments became either highly
irreplaceable with frequency values >0.75 or not needed with
3.3. Frequency of selection when planning for ecosystem services
and aligned with biodiversity priorities
The degree of flexibility when planning for individual ecosystem
services differed between ecosystem services as reflected in
patterns of selection of planning units. Planning for water services
showed that 19% of catchments had frequency values >0.5 for
surface water supply and 7% for water flow regulation. This implies
that only a few irreplaceable catchments contribute the most in
water supply and regulation services as demonstrated by the fact
that areas with frequency of >0.5 covered only 9% of the grassland
biome for water supply and 3% for water flow regulation. The
service of carbon sequestration was distributed throughout the
study area and was seen in the results where 30% of the catchments
(25% of the grassland) had frequency values >0.5 when planning
for carbon storage alone. However, there were few clusters in the
forest vegetation. Soil services were also distributed across the
study area with different sections of catchments contributing to
this service. Frequency maps of soil accumulation and soil retention
showed that 15% (12% of the grassland biome) and 19% (11% of the
grassland biome) of catchments respectively had values >0.5.
These catchments were found in different parts of eastern seaboard
for both services and a few in far north for soil accumulation.
Planning for all five services at once showed that few catchments
contributed significantly to all five services which were
highly irreplaceable. Results from Scenario 1 showed that 8% (4% of
grassland biome) of all catchments had frequencies >0.5. However,
the flexibility of catchments selected to meet target for ecosystem
services reduced as the target levels increased (Fig. 3). This is
expected because high targets indicate that more catchments are
ultimately needed to meet those targets. In Scenario 2, 33% (28% of
the grassland biome) of the catchments had a frequency value of
>0.5. Similarly, Scenario 3 results showed that a larger number of
catchments (>90%) had frequency values >0.5, but few catchments
(<2%) had a value >0.75. When biodiversity was introduced in
Scenario 4 as a cost layer, more catchments became either highly
irreplaceable with frequency values >0.75 or not needed with
การแปล กรุณารอสักครู่..
