1. Faculty of Geography, "Babeş-Bolyai" University, 400006 Cluj-Napoca, Romania 2. Romanian Academy Cluj-Napoca Subsidiary Geography Section, 400015 Cluj-Napoca, Romania
Maramureş Land is mostly characterized by agricultural and forestry land use due to its specific configuration of topography and its specific pedoclimatic conditions. Taking into consideration the trend of the last century from the perspective of land management, a decrease in the surface of agricultural lands to the advantage of built-up and grass lands, as well as an accelerated decrease in the forest cover due to uncontrolled and irrational forest exploitation, has become obvious. The field analysis performed on the territory of Maramureş Land has highlighted a high frequency of two geomorphologic processes – landslides and soil erosion – which have a major negative impact on land use due to their rate of occurrence. The main aim of the present study is the GIS modeling of the two geomorphologic processes, determining a state of vulnerability (the USLE model for soil erosion and a quantitative model based on the morphometric characteristics of the territory, derived from the HG. 447/2003) and their integration in a complex model of cumulated vulnerability identification. The modeling of the risk exposure was performed using a quantitative approach based on models and equations of spatial analysis, which were developed with modeled raster data structures and primary vector data, through a matrix highlighting the correspondence between vulnerability and land use classes. The quantitative analysis of the risk was performed by taking into consideration the exposure classes as modeled databases and the land price as a primary alphanumeric database using spatial analysis techniques for each class by means of the attribute table. The spatial results highlight the territories with a high risk to present geomorphologic processes that have a high degree of occurrence and represent a useful tool in the process of spatial planning.
. [J]. Frontiers of Earth Science, 2018, 12(2): 311-324.
Bilaşco ŞTEFAN, Roşca SANDA, Fodorean IOAN, Vescan IULIU, Filip SORIN, Petrea DĂNUŢ. Quantitative evaluation of the risk induced by dominant geomorphological processes on different land uses, based on GIS spatial analysis models. Front. Earth Sci., 2018, 12(2): 311-324.
Moisei, Vişeul de Jos, Ruscova, Petrova, Leordina
36
8.000
Săliştea de Sus, Dragomireşti, Bistra, Repedea, Poienile de Sub Munte
24
5.333
Deseşti, Giuleşti, Vadu Izei, Onceşti, Bârsana, Bocicoiu Mare, Rona de Sus, Rona de Jos, Ocna Şugatag, Budeşti, Călineşti, Câmpulung la Tisa, Sarasău, Săpânţa, Remeţi
Out-of-town land
Arable
3.18
0.707
Sighetu Marmaţiei
3.13
0.696
Vişeul de Sus, Borşa
1.30
0.289
Dragomireşti, Săliştea de Sus
0.52
0.116
Moisei, Vişeul de Jos, Ruscova, Petrova, Leordina
0.45
0.100
Bistra, Repedea, Poienile de Sub Munte, Deseşti, Giuleşti, Vadu Izei, Onceşti, Bârsana, Bocicoiu Mare, Rona de Sus, Rona de Jos, Ocna Şugatag, Budeşti, Călineşti, Câmpulung la Tisa, Sarasău, Săpânţa, Remeţi
Orchards and vineyards
2.78
0.618
Sighetu Marmaţiei
2.50
0.556
Vişeul de Sus, Borşa
1.14
0.253
Dragomireşti, Săliştea de Sus
0.42
0.093
Moisei, Vişeul de Jos, Ruscova, Petrova, Leordina
0.36
0.080
Bistra, Repedea, Poienile de Sub Munte, Deseşti, Giuleşti, Vadu Izei, Onceşti, Bârsana, Bocicoiu Mare, Rona de Sus, Rona de Jos, Ocna Şugatag, Budeşti, Călineşti, Câmpulung la Tisa, Sarasău, Săpânţa, Remeţi
Forest
2.39
0.531
Sighetu Marmaţiei
1.35
0.300
Vişeul de Sus, Borşa
1.04
0.231
Moisei, Vişeul de Jos, Ruscova, Petrova, Leordina, Bistra, Repedea, Poienile de Sub Munte
0.98
0.218
Dragomireşti, Săliştea de Sus
0.27
0.060
Deseşti, Giuleşti, Vadu Izei, OnceVti, Bârsana, Bocicoiu Mare, Rona de Sus, Rona de Jos, Ocna Şugatag, Budeşti, Călineşti, Câmpulung la Tisa, Sarasău, Săpânţa, Remeţi
Pastures
1.67
0.371
Vişeul de Sus, Borşa
1.59
0.353
Sighetu Marmaţiei
0.65
0.144
Dragomireşti, Săliştea de Sus
0.21
0.047
Moisei, Vişeul de Jos, Ruscova, Petrova, Leordina
0.18
0.040
Bistra, Repedea, Poienile de Sub Munte, Deseşti, Giuleşti, Vadu Izei, Onceşti, Bârsana, Bocicoiu Mare, Rona de Sus, Rona de Jos, Ocna Şugatag, Budeşti, Călineşti, Câmpulung la Tisa, Sarasău, Săpânţa, Remeţi
Other categories / non-productive
0.88
0.196
Sighetu Marmaţiei
0.42
0.093
Vişeul de Sus, Borşa
0.33
0.073
Dragomireşti, Săliştea de Sus
0.10
0.022
Moisei, Vişeul de Jos, Ruscova, Petrova, Leordina
0.09
0.020
Bistra, Repedea, Poienile de Sub Munte, Deseşti, Giuleşti, Vadu Izei, Onceşti, Bârsana, Bocicoiu Mare, Rona de Sus, Rona de Jos, Ocna Şugatag, Budeşti, Călineşti, Câmpulung la Tisa, Sarasău, Săpânţa, Remeţi
Tab.3
Land use classes
Cumulated probability classes
P.VH
P.H
P.MH
P.M
P.L
Watercourses
5
5
5
5
5
Orchards
2
4
4
5
5
Swamps
5
5
5
5
5
Coniferous forests
2
2
3
3
4
Broad-leaved forests
2
3
3
3
4
Mixed forests
2
2
3
3
4
Secondary pastures
1
2
3
3
3
Urban and rural area
1
1
1
1
2
Non-irrigated arable land
1
1
1
2
2
Agricultural land and natural vegetation
1
2
2
3
4
Industrial and trading units
1
1
1
4
4
Complex cultures
1
1
2
3
3
Deforested areas
1
1
2
2
3
Scarce vegetation areas
1
2
2
4
5
Waste dumps
1
2
3
4
5
Natural pastures
1
1
2
3
3
Rocky fields
5
5
5
5
5
Subalpine vegetation
1
1
2
2
3
Recreation areas
1
1
1
4
4
Mining areas
2
3
4
4
5
Tab.4
Fig.5
Fig.6
Fig.7
Fig.8
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