Environmental Engineering Reference
In-Depth Information
Table 13.5 Effects (in percentage of regional objective fulfillment) of sectoral and integrative
scenario when the budget is limited to 40 Mio. €
Effects on
Sectoral scenario (objective fulfillment in %)
a
Integrative
scenario
(objective
fulfillment
in %)
b
E (10
Mio. €)
W (10
Mio. €)
C (10
Mio. €)
B (10
Mio. €)
Sum of effects
(40 Mio. €)
40 Mio. €
Erosion prevention (E)
11.9
4.8
3.5
1.3
21.5
19.4
Water quality
conservation (W)
3.2
36.1
4.2
1.9
45.4
13.1
Climate change
mitigation (C)
0.5
0
4.0
0.9
5.4
5.1
Safeg. biodiversity (B)
0.2
3.0
2.4
3.5
9.1
15.2
Sum
15.8
43.9
14.1
7.6
81.4
52.8
a
optimized selection and allocation of measures for achieving maximum effects in each sectoral
management strategy
b
maximization of effects by allocating measures in Level-4 areas
maximum multifunctional effects can be reached (areas with 3- and 4-level mul-
tifunctional needs) (Table
13.5
). However, this implies a trade-off for the fulfill-
ment of sectoral objectives which can be achieved at relatively low costs: If we
would give each sector an equal share of 10 Mio. € for implementation, in par-
ticular the water objective could be achieved at a rate of 36.1 %. In the integrative
scenario only 13.4 % of the sectoral objective for water quality conservation are
fulfilled spending 40 Mio. € proportionally in all areas of action. Looking at the
specific effects for landscape functions, climate change mitigation as well as
safeguarding biodiversity would profit from an integrative management, whereas
the benefits for water quality conservation are lower, compared to the effects
achieved within the sectoral scenario.
13.5 Discussion
A method has been developed and tested for investigating and comparing the
effectiveness and efficiency of sectoral and integrative landscape management
strategies. In a case study the effects and the efficiency of the strategies were
quantified. The results showed that water quality conservation measures have few
additional benefits for other landscape functions. In contrast, measures for climate
change mitigation and safeguarding biodiversity are generally multifunctional.
However, these measures very often require land use restrictions or even the
abandonment of land use. In addition, their implementation costs are higher than
for integrated land use measures that preserve water quality. In fact, achieving the
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