Page 240 - Çevre Şehir İklim İngilizce - Sayı 3

Evaluation of Surface Runoff Risk in The Frame of Landscape Pattern:
The Case of Kastamonu Central District

sun exposure etc. in the analysis. From this point of view, it is not possible for
ecological risk analyses to be completely quantitative, since determining the
criteria to be included in the evaluation and their ability to reveal the subject
being investigated depends on the decision maker.
Moreover, suitability and risk analyses allow even the highly complex
structures such as the landscape mentioned above, to be systematically
evaluated. The more this logical framework is taken into account when
creating multi-criteria evaluation matrices, the more reliable and guiding the
results will be. AHP has been prefered as a method in this research since it
can control the consistency among the values assigned to criteria, which is an
important aspect minimizing the relativity.
Slope, permeability, exposure and elevation have been determined as the
main criteria to evaluate the risk of surface runoff in the research area. First of
all, the design of each criterion was made in order to determine the surface
runoff risk, and a comparison matrix was established in this direction.
Slope, exposure and elevation analyses are derived from AsterDEM data (URL-3).
Slope Criterion: Since the surface runoff will be triggered more with the
increasing slope, high risk values were assigned to high slope percentages
while lower risk values were defined for lower ones (Figure 2, Table 1).

Figure 2. Slope analysis of the research area

Year 2 / Issue 3 / January 2023 225