Figure 1.
Administrative division of the Republic of Lithuania and Jurbarkas District (with land productivity scores in them).
Figure 1.
Administrative division of the Republic of Lithuania and Jurbarkas District (with land productivity scores in them).
Figure 2.
Percentage distribution of municipalities according to soil productivity score.
Figure 2.
Percentage distribution of municipalities according to soil productivity score.
Figure 3.
Karšuva forest: (a) the location of the former interstate border in Jurbarkas District, (b) a fragment of the Karšuva forest, separated by the interstate border.
Figure 3.
Karšuva forest: (a) the location of the former interstate border in Jurbarkas District, (b) a fragment of the Karšuva forest, separated by the interstate border.
Figure 4.
LIDAR point cloud: (a) before thinning, (b) after thinning.
Figure 4.
LIDAR point cloud: (a) before thinning, (b) after thinning.
Figure 5.
Overall methodology adopted in this study.
Figure 5.
Overall methodology adopted in this study.
Figure 6.
Geomorphological parameters of Jurbarkas District: (a) distribution of altitudes of the land surface, expressed in meters; (b) shares of the land surface slopes, divided into intervals, of the territory of the entire district (intervals of the slopes are given in the legend of the chart; the ratio of the area occupied by the slopes to the area of the entire district is presented as a percentage); (c) distribution of slopes of the land surface (intervals of slopes are given in the legend); (d) shares of the slopes of the land surface, divided into intervals, of the territory of the entire district (intervals of slopes are given in the legend of the chart; the ratio of the area occupied by the slopes to the area of the entire district is presented as a percentage); (e) aspect of the earth surface; (f) shares of slopes with respect to the cardinal directions of the total area of the district; (g) expression of the slope of the area in degrees.
Figure 6.
Geomorphological parameters of Jurbarkas District: (a) distribution of altitudes of the land surface, expressed in meters; (b) shares of the land surface slopes, divided into intervals, of the territory of the entire district (intervals of the slopes are given in the legend of the chart; the ratio of the area occupied by the slopes to the area of the entire district is presented as a percentage); (c) distribution of slopes of the land surface (intervals of slopes are given in the legend); (d) shares of the slopes of the land surface, divided into intervals, of the territory of the entire district (intervals of slopes are given in the legend of the chart; the ratio of the area occupied by the slopes to the area of the entire district is presented as a percentage); (e) aspect of the earth surface; (f) shares of slopes with respect to the cardinal directions of the total area of the district; (g) expression of the slope of the area in degrees.
Figure 7.
Distribution of slopes in the elderships, % (of the total area of the elderships).
Figure 7.
Distribution of slopes in the elderships, % (of the total area of the elderships).
Figure 8.
Distribution of slopes in the elderships, % (of the total area of the elderships) in relation to the cardinal directions.
Figure 8.
Distribution of slopes in the elderships, % (of the total area of the elderships) in relation to the cardinal directions.
Figure 9.
Distribution of land surface altitudes in the municipalities of Jurbarkas District.
Figure 9.
Distribution of land surface altitudes in the municipalities of Jurbarkas District.
Figure 10.
Forest cover maps with visible logging areas for elderships: (1) Eržvilkas, (2) Girdžiai, (3) Juodaičiai, (4) Jurbarkai, (5) Jurbarkas City, (6) Raudonė, (7) Seredžius, (8) Šimkaičiai, (9) Skirsnemunė, (10) Smalininkai (11) Veliuona, and (12) Viešvilė; period: (a) 19th century, (b) 1st half of the 20th century, (c) 2nd half of the 20th century.
Figure 10.
Forest cover maps with visible logging areas for elderships: (1) Eržvilkas, (2) Girdžiai, (3) Juodaičiai, (4) Jurbarkai, (5) Jurbarkas City, (6) Raudonė, (7) Seredžius, (8) Šimkaičiai, (9) Skirsnemunė, (10) Smalininkai (11) Veliuona, and (12) Viešvilė; period: (a) 19th century, (b) 1st half of the 20th century, (c) 2nd half of the 20th century.
Figure 11.
Forest coverage of Jurbarkas District with visible logging areas: (a) 19th century, (b) 1st half of the 20th century, (c) 2nd half of the 20th century.
Figure 11.
Forest coverage of Jurbarkas District with visible logging areas: (a) 19th century, (b) 1st half of the 20th century, (c) 2nd half of the 20th century.
Figure 12.
Maps of forest cover recorded in the CORINE Land Cover database for elderships: (1) Eržvilkas, (2) Girdžiai, (3) Juodaičiai, (4) Jurbarkai, (5) Jurbarkas City, (6) Raudonė, (7) Seredžius, (8) Šimkaičiai, (9) Skirsnemunė, (10) Smalininkai (11) Veliuona, and (12) Viešvilė.
Figure 12.
Maps of forest cover recorded in the CORINE Land Cover database for elderships: (1) Eržvilkas, (2) Girdžiai, (3) Juodaičiai, (4) Jurbarkai, (5) Jurbarkas City, (6) Raudonė, (7) Seredžius, (8) Šimkaičiai, (9) Skirsnemunė, (10) Smalininkai (11) Veliuona, and (12) Viešvilė.
Figure 13.
Maps of forest cover recorded in the CORINE Land Cover database for Jurbarkas District.
Figure 13.
Maps of forest cover recorded in the CORINE Land Cover database for Jurbarkas District.
Figure 14.
Forest cadastral data maps for elderships: (1) Eržvilkas, (2) Girdžiai, (3) Juodaičiai, (4) Jurbarkai, (5) Jurbarkas City, (6) Raudonė, (7) Seredžius, (8) Šimkaičiai, (9) Skirsnemunė, (10) Smalininkai, (11) Veliuona, and (12) Viešvilė.
Figure 14.
Forest cadastral data maps for elderships: (1) Eržvilkas, (2) Girdžiai, (3) Juodaičiai, (4) Jurbarkai, (5) Jurbarkas City, (6) Raudonė, (7) Seredžius, (8) Šimkaičiai, (9) Skirsnemunė, (10) Smalininkai, (11) Veliuona, and (12) Viešvilė.
Figure 15.
Forest cadastral data map of Jurbarkas District.
Figure 15.
Forest cadastral data map of Jurbarkas District.
Figure 16.
The rate of change in forest areas in (a) elderships and (b) Jurbarkas District.
Figure 16.
The rate of change in forest areas in (a) elderships and (b) Jurbarkas District.
Figure 17.
Hydrographic network of Jurbarkas District.
Figure 17.
Hydrographic network of Jurbarkas District.
Figure 18.
Visualization of correlation analysis of altitudes in Jurbarkas District with forest cover change.
Figure 18.
Visualization of correlation analysis of altitudes in Jurbarkas District with forest cover change.
Figure 19.
Map of slopes of Jurbarkas District correlating/non-correlating with changes in forest cover in the 19th–21st centuries.
Figure 19.
Map of slopes of Jurbarkas District correlating/non-correlating with changes in forest cover in the 19th–21st centuries.
Figure 20.
Elderships with very strong, strong, and moderate statistically significant correlations (marked in yellow): (a) the 19th century, (b) 1st half of the 20th century, (c) 2nd half of the 20th century.
Figure 20.
Elderships with very strong, strong, and moderate statistically significant correlations (marked in yellow): (a) the 19th century, (b) 1st half of the 20th century, (c) 2nd half of the 20th century.
Figure 21.
The ratio of forest cover/non-forest cover in slope ranges in elderships of Jurbarkas District: (a) 2nd half of the 19th century, (b) 1st half of the 20th century, (c) 2nd half of the 20th century.
Figure 21.
The ratio of forest cover/non-forest cover in slope ranges in elderships of Jurbarkas District: (a) 2nd half of the 19th century, (b) 1st half of the 20th century, (c) 2nd half of the 20th century.
Figure 22.
Distribution of forest cover/non-forest cover in Jurbarkas District: (a) 2nd half of the 19th century, (b) 1st half of the 20th century, (c) 2nd half of the 20th century.
Figure 22.
Distribution of forest cover/non-forest cover in Jurbarkas District: (a) 2nd half of the 19th century, (b) 1st half of the 20th century, (c) 2nd half of the 20th century.
Figure 23.
Permanent areas of forest cover in elderships of Jurbarkas District: (1) Eržvilkas, (2) Girdžiai, (3) Juodaičiai, (4) Jurbarkai, (5) Jurbarkas City, (6) Raudonė, (7) Seredžius, (8) Šimkaičiai, (9) Skirsnemunė, (10) Smalininkai, (11) Veliuona, and (12) Viešvilė.
Figure 23.
Permanent areas of forest cover in elderships of Jurbarkas District: (1) Eržvilkas, (2) Girdžiai, (3) Juodaičiai, (4) Jurbarkai, (5) Jurbarkas City, (6) Raudonė, (7) Seredžius, (8) Šimkaičiai, (9) Skirsnemunė, (10) Smalininkai, (11) Veliuona, and (12) Viešvilė.
Figure 24.
Permanent areas of forest cover in Jurbarkas District.
Figure 24.
Permanent areas of forest cover in Jurbarkas District.
Figure 25.
Forest areas present during the 19th–20th centuries.
Figure 25.
Forest areas present during the 19th–20th centuries.
Figure 26.
Dynamics of the forest cover area in the 19th–21st centuries.
Figure 26.
Dynamics of the forest cover area in the 19th–21st centuries.
Table 1.
Data sources of forest areas from the 1st half of the 19th century to the 1st half of the 21st century.
Table 1.
Data sources of forest areas from the 1st half of the 19th century to the 1st half of the 21st century.
No. | Data | Example | Data Source |
---|
1 | Old topographic maps, 1860. Updated in 1865 | ![Sustainability 16 04825 i001]() | https://www.maps4u.lt/lt/maps.php?cat=20 (accessed on 1 January 2021) |
2 | Old topographic maps, 1933–1940. Updated in 1938 | ![Sustainability 16 04825 i002]() | https://www.geoportal.lt/map/ (accessed on 1 January 2021) |
3 | Old topographic maps, 1988. Updated in 1983 | ![Sustainability 16 04825 i003]() | https://www.geoportal.lt/map/ (accessed on 1 January 2021) |
4 | CORINE Land Cover 2018, (CLC18_LT) | ![Sustainability 16 04825 i004]() | https://www.geoportal.lt/geoportal/naujienos/-/asset_publisher/sUiF20Ur705t/content/2018-metu-corine-zemes-dangos-duomenu-rinkinys-jau-geoportal-lt (accessed on 1 February 2021) |
5 | State forest cadastral data, 2021 | ![Sustainability 16 04825 i005]() | https://www.geoportal.lt/geoportal/valstybine-misku-tarnyba#savedSearchId={5CA476B2-E876-4B39-A16B-C10FDF4009B9}&collapsed=true (accessed on 1 January 2021) |
6 | Orthophoto maps, 2021 | ![Sustainability 16 04825 i006]() | ArcGIS Desktop (10.8.1, ESRI, Redlands, CA, USA) Basemap (Maps.lt orthophoto LKS) |
Table 2.
Distribution of land surface slope in Jurbarkas District.
Table 2.
Distribution of land surface slope in Jurbarkas District.
Slope, Degree | Of the Total Area of the District, % |
---|
0–13 | 99.0 |
13–18 | 0.5 |
18–25 | 0.3 |
25–35 | 0.15 |
35–66 | 0.05 |
Table 3.
Distribution of land surface aspect in Jurbarkas District.
Table 3.
Distribution of land surface aspect in Jurbarkas District.
Distribution of Land Surface Slope in Relation to the Cardinal Directions | Of the Total Area of the District, % |
---|
Š (315°–44.9°) | 20.1 |
R (45°–134.9°) | 10.9 |
P (135°–224.9°) | 43.2 |
V (225°–314.9°) | 25.8 |
Table 4.
Distribution of land surface altitudes in Jurbarkas District.
Table 4.
Distribution of land surface altitudes in Jurbarkas District.
Land Surface Altitudes, m | Of the Total Area of the District, % |
---|
0–10 | 0.5 |
10–20 | 2.9 |
20–30 | 6.2 |
30–40 | 6.5 |
40–50 | 15.4 |
50–60 | 29.2 |
60–70 | 23.8 |
70–80 | 13.6 |
80–90 | 1.9 |
90–100 | 0.0 |
Table 5.
Areas of forest cover in the elderships during the period of the 2nd half of the 19th century as a percentage of the area of the elderships.
Table 5.
Areas of forest cover in the elderships during the period of the 2nd half of the 19th century as a percentage of the area of the elderships.
Elderships | Area of Forest before Logging, % | Area of Forest after Logging, % | Area of Logging from the Forest Area, % | Area of Logging from the Eldership Area, % |
---|
2nd Half of the 19th Century |
Eržvilkas | 58.2 | 57.9 | 0.6 | 0.3 |
Girdžiai | 67.4 | 63.4 | 5.9 | 4.0 |
Juodaičiai | 51.1 | 49.8 | 2.6 | 1.3 |
Jurbarkai | 69.0 | 60.6 | 12.2 | 8.4 |
Jurbarkas city | 8.0 | 8.0 | 0.0 | 0.0 |
Raudonė | 54.1 | 51.1 | 5.5 | 3.0 |
Seredžius | 44.9 | 44.4 | 1.2 | 0.5 |
Skirsnemunė | 46.8 | 46.3 | 1.2 | 0.6 |
Smalininkai | 14.2 | 14.2 | <0.1 | 0.0 |
Šimkaičiai | 66.2 | 63.9 | 3.5 | 2.3 |
Veliuona | 62.7 | 61.9 | 1.4 | 0.9 |
Viešvilė | 67.4 | 67.4 | 0.0 | 0.0 |
Jurbarkas Distr. | 59.9 | 56.6 | 4.6 | 2.7 |
1st half of the 20th century |
Eržvilkas | 16.7 | 16.6 | 0.7 | 0.1 |
Girdžiai | 28.9 | 27.9 | 3.5 | 1.0 |
Juodaičiai | 3.8 | 3.8 | - | - |
Jurbarkai | 45.7 | 45.7 | - | - |
Jurbarkas city | 12.3 | 12.3 | - | - |
Raudonė | 15.9 | 15.9 | - | - |
Seredžius | 17.1 | 17.1 | - | - |
Skirsnemunė | 17.5 | 17.5 | - | - |
Smalininkai | 22.4 | 22.4 | - | - |
Šimkaičiai | 21.2 | 21.2 | - | - |
Veliuona | 25.9 | 25.9 | - | - |
Viešvilė | 70.5 | 70.5 | - | - |
Jurbarkas Distr. | 28.8 | 28.7 | 0.4 | 0.1 |
2nd half of the 20th century |
Eržvilkas | 22.3 | 22.3 | - | - |
Girdžiai | 29.5 | 29.5 | - | - |
Juodaičiai | 17.6 | 17.6 | - | - |
Jurbarkai | 51.1 | 51.0 | 0.2 | 0.1 |
Jurbarkas city | 16.8 | 16.8 | - | - |
Raudonė | 23.4 | 23.4 | - | - |
Seredžius | 31.5 | 31.5 | - | - |
Skirsnemunė | 19.0 | 19.0 | - | - |
Smalininkai | 33.8 | 33.5 | 0.7 | 0.3 |
Šimkaičiai | 25.7 | 25.7 | - | - |
Veliuona | 33.2 | 33.2 | - | - |
Viešvilė | 76.4 | 76.3 | 0.1 | 0.1 |
Jurbarkas Distr. | 35.0 | 34.9 | 0.1 | <0.1 |
Table 6.
Areas of forest cover in the 1st half of the 21st century as a percentage of the area of the elderships.
Table 6.
Areas of forest cover in the 1st half of the 21st century as a percentage of the area of the elderships.
Elderships | The Area of Forest Cover, % |
---|
Eržvilkas | 24.1 |
Girdžiai | 26.9 |
Juodaičiai | 17.5 |
Jurbarkai | 50.6 |
Jurbarkas city | 15.3 |
Raudonė | 22.0 |
Seredžius | 33.6 |
Skirsnemunė | 14.4 |
Smalininkai | 39.2 |
Šimkaičiai | 24.3 |
Veliuona | 33.5 |
Viešvilė | 67.6 |
Jurbarkas Distr. | 33.9 |
Table 7.
Forest areas according to the data from the Forest Cadastre as a percentage of the area of the elderships.
Table 7.
Forest areas according to the data from the Forest Cadastre as a percentage of the area of the elderships.
Elderships | Area of Forest, % |
---|
Eržvilkas | 26.4 |
Girdžiai | 33.2 |
Juodaičiai | 18.9 |
Jurbarkai | 56.2 |
Jurbarkas city | 18.8 |
Raudonė | 25.7 |
Seredžius | 35.4 |
Skirsnemunė | 20.5 |
Smalininkai | 40.9 |
Šimkaičiai | 29.1 |
Veliuona | 36.4 |
Viešvilė | 82.8 |
Jurbarkas Distr. | 38.9 |
Table 8.
Forest areas of different ages of the total forest area (percentage).
Table 8.
Forest areas of different ages of the total forest area (percentage).
Age of Trees, in Years | Eržvilkas | Girdžiai | Juodaičiai | Jurbarkai | Jurbarkas City | Raudonė | Seredžius | Skirsnemunė | Smalininkai | Šimkaičiai | Veliuona | Viešvilė | Jurbarkas Distr. |
---|
0–5 | 9.3 | 7.6 | 14.5 | 12.2 | 4.2 | 13.0 | 13.7 | 12.9 | 17.9 | 13.5 | 12.6 | 8.8 | 11.4 |
6–9 | 1.8 | 5.0 | 2.4 | 3.3 | 0.1 | 4.1 | 3.3 | 3.1 | 5.7 | 4.4 | 2.8 | 3.3 | 3.4 |
10–19 | 10.2 | 14.8 | 13.2 | 8.4 | 0.6 | 12.7 | 11.0 | 12.7 | 10.2 | 16.3 | 11.1 | 5.4 | 10.2 |
20–39 | 14.3 | 26.8 | 22.0 | 20.1 | 5.8 | 17.3 | 13.7 | 28.0 | 20.8 | 20.0 | 21.1 | 11.1 | 18 |
40–59 | 15.8 | 13.5 | 15.6 | 13.4 | 12.2 | 17.4 | 15.6 | 19.0 | 8.3 | 10.1 | 19.5 | 12.9 | 14.2 |
60–79 | 25.6 | 14.5 | 19.2 | 21.2 | 19.7 | 19.9 | 21.0 | 15.0 | 12.9 | 15.1 | 17.8 | 30.8 | 21.5 |
80–99 | 18.3 | 13.3 | 12.5 | 20.6 | 17.9 | 11.2 | 17.8 | 6.4 | 11.8 | 17.3 | 13.9 | 11.7 | 15.9 |
100–119 | 3.8 | 3.8 | 0.4 | 0.4 | 19.0 | 2.6 | 3.5 | 1.9 | 8.8 | 3.1 | 0.7 | 11.0 | 3.9 |
120–139 | 0.7 | 0.4 | 0.2 | 0.1 | 20.5 | 1.2 | 0.4 | 0.8 | 3.3 | 0.1 | 0.2 | 3.5 | 1.0 |
140–159 | 0.2 | <0.1 | - | 0.3 | - | 0.6 | - | 0.2 | 0.1 | 0.1 | 0.3 | 1.0 | 0.4 |
160–179 | - | 0.1 | - | - | - | - | - | - | 0.2 | - | - | 0.5 | 0.1 |
180–199 | - | 0.1 | - | - | - | - | - | - | - | - | - | 0.05 | <0.1 |
200 and more | - | - | - | - | - | - | - | - | - | - | - | <0.01 | <0.01 |
Table 9.
The forest cover change as a percentage of the area of the elderships.
Table 9.
The forest cover change as a percentage of the area of the elderships.
Elderships | 2nd Half of the 19th Century–1st Half of the 20th Century | 2nd Half of the 19th Century–2nd Half of the 20th Century | 2nd Half of the 19th Century–1st Half of the 21st Century | 1st Half of the 20th Century–2nd Half of the 20th Century | 1st Half of the 20th Century–1st Half of the 21st Century | 2nd Half of the 20th Century–1st Half of the 21st Century |
---|
Eržvilkas | −41.3 | −35.6 | −33.8 | 5.7 | 7.5 | 1.8 |
Girdžiai | −35.5 | −33.9 | −36.5 | 1.6 | −1 | −2.6 |
Juodaičiai | −46 | −32.2 | −32.3 | 13.8 | 13.7 | −0.1 |
Jurbarkai | −14.9 | −9.6 | −10.0 | 5.3 | 4.9 | −0.4 |
Jurbarkas city | 4.3 | 8.8 | 7.3 | 4.5 | 3 | −1.5 |
Raudonė | −35.2 | −27.7 | −29.1 | 7.5 | 6.1 | −1.4 |
Seredžius | −27.3 | −12.9 | −10.8 | 14.4 | 16.5 | 2.1 |
Skirsnemunė | −28.8 | −27.3 | −31.9 | 1.5 | −3.1 | −4.6 |
Smalininkai | 8.2 | 19.3 | 25 | 11.1 | 16.8 | 5.7 |
Šimkaičiai | −42.7 | −38.2 | −39.6 | 4.5 | 3.1 | −1.4 |
Veliuona | −36 | −28.7 | −28.4 | 7.3 | 7.6 | 0.3 |
Viešvilė | 3.1 | 8.9 | 0.2 | 5.8 | −2.9 | −8.7 |
Jurbarkas Distr. | −27.9 | −21.7 | −22.7 | 6.2 | 5.2 | −1.0 |
Table 10.
The increase in forest area from the forest area.
Table 10.
The increase in forest area from the forest area.
Elderships | 2nd Half of the 19th Century–1st Half of the 20th Century | 2nd Half of the 19th Century–2nd Half of the 20th Century | 2nd Half of the 19th Century–1st Half of the 21st Century | 1st Half of the 20th Century–2nd Half of the 20th Century | 1st Half of the 20th Century–1st Half of the 21st Century | 2nd Half of the 20th Century–1st Half of the 21st Century |
---|
Eržvilkas | −71.4 | −61.5 | −58.4 | 34.6 | 45.4 | 8.1 |
Girdžiai | −56.0 | −53.5 | −57.6 | 5.8 | −3.6 | −8.8 |
Juodaičiai | −92.3 | −64.7 | −64.9 | 359.4 | 356.7 | −0.6 |
Jurbarkai | −24.5 | −15.2 | −16.4 | 12.3 | 10.7 | −1.5 |
Jurbarkas city | 55.0 | 93.7 | 95.4 | 25.0 | 26.1 | 0.9 |
Raudonė | −69.0 | −54.3 | −57.0 | 47.2 | 38.6 | −5.9 |
Seredžius | −61.5 | −29.1 | −24.3 | 84.3 | 96.9 | 6.9 |
Skirsnemunė | −62.2 | −59.0 | −69.0 | 8.4 | −17.9 | −24.3 |
Smalininkai | 57.5 | 135.0 | 176.3 | 49.1 | 75.3 | 17.6 |
Šimkaičiai | −66.9 | −59.8 | −62.0 | 21.3 | 14.7 | −5.5 |
Veliuona | −58.2 | −46.4 | −45.9 | 28.4 | 29.4 | 0.8 |
Viešvilė | 4.6 | 13.2 | 0.4 | 8.3 | −4.0 | −11.4 |
Jurbarkas Distr. | −49.5 | −38.6 | −40.4 | 21.7 | 18.0 | −3.0 |
Table 11.
Periods between years in which forest areas are recorded.
Table 11.
Periods between years in which forest areas are recorded.
Period | 2nd Half of the 19th Century | 1st Half of the 20th Century | 2nd Half of the 20th Century |
---|
2nd half of the 19th century | - | - | - |
1st half of the 20th century | 73 years | - | - |
2nd half of the 20th century | 118 years | 45 years | - |
1st half of the 21st century | 158 years | 80 years | 35 years |
Table 12.
Number of years in which forest cover areas would have disappeared/doubled.
Table 12.
Number of years in which forest cover areas would have disappeared/doubled.
Elderships | If the Effects of Factors of 2nd Half of the 19th Century–1st Half of the 20th Century Were Maintained | If the Effects of Factors of 1st Half of the 20th Century–2nd Half of the 20th Century Were Maintained | If the Effects of Factors of 2nd Half of the 20th Century–1st Half of the 21st Century Were Maintained |
---|
Eržvilkas | −102 | +134 | +469 |
Girdžiai | −128 | +2165 | −575 |
Juodaičiai | −79 | +12 | −58,333 |
Jurbarkai | −216 | +357 | −853 |
Jurbarkas city | +133 | +180 | +100,078 |
Raudonė | −103 | +95 | −1338 |
Seredžius | −118 | +53 | +626 |
Skirsnemunė | −116 | +536 | −412 |
Smalininkai | +127 | +90 | +1258 |
Šimkaičiai | −107 | +211 | −650 |
Veliuona | −124 | +159 | +5479 |
Viešvilė | +1593 | +536 | −178 |
Jurbarkas Distr. | −141 | +211 | −117 |
Table 13.
Results of correlation analysis between land productivity scores and forest cover areas.
Table 13.
Results of correlation analysis between land productivity scores and forest cover areas.
| If the Effects of Factors of 2nd Half of the 19th Century-1st Half of the 20th Century Were Maintained | If the Effects of Factors of 1st Half of the 20th Century-2nd Half of the 20th Century Were Maintained | If the Effects of Factors of 2nd Half of the 20th Century-1st Half of the 21st Century Were Maintained |
---|
rij | p-Value | rij | p-Value | rij | p-Value |
---|
Land productivity scores | −0.92 | 0.00 | −0.11 | 0.25 | 0.16 | 0.52 |
Table 14.
Results of correlation analysis between aspect and changes in forest cover areas.
Table 14.
Results of correlation analysis between aspect and changes in forest cover areas.
Aspect, Degree | If the Effects of Factors of 2nd Half of the 19th Century–1st Half of the 20th Century Were Maintained | If the Effects of Factors of 2nd Half of the 19th Century–2nd Half of the 20th Century Were Maintained | If the Effects of Factors of 2nd Half of the 19th Century–1st Half of the 21st Century Were Maintained |
---|
rij | p-Value | rij | p-Value | rij | p-Value |
---|
320–40 | −0.35 | 0.57 | −0.38 | 0.46 | −0.42 | 0.39 |
40–130 | 0.40 | 0.08 | 0.51 | 0.04 | 0.55 | 0.02 |
130–240 | 0.26 | 0.25 | 0.23 | 0.31 | 0.29 | 0.22 |
240–320 | −0.42 | 0.34 | −0.43 | 0.29 | −0.52 | 0.17 |
Table 15.
Results of correlation analysis between altitudes of land surface and changes in forest cover areas.
Table 15.
Results of correlation analysis between altitudes of land surface and changes in forest cover areas.
Elevation of the Earth’s Surface | If the Effects of Factors of 2nd Half of the 19th Century–1st Half of the 20th Century Were Maintained | If the Effects of Factors of 2nd Half of the 19th Century–2nd Half of the 20th Century Were Maintained | If the Effects of Factors of 2nd Half of the 19th Century–1st Half of the 21st Century Were Maintained |
---|
rij | p-Value | rij | p-Value | rij | p-Value |
---|
0–10 | 0.46 | <0.01 | 0.43 | <0.01 | 0.43 | <0.01 |
10–20 | 0.57 | <0.01 | 0.58 | <0.01 | 0.50 | <0.01 |
20–30 | 0.44 | <0.01 | 0.48 | <0.01 | 0.40 | <0.01 |
30–40 | 0.00 | 0.01 | 0.06 | 0.02 | 0.01 | 0.02 |
40–50 | −0.44 | 0.01 | −0.40 | 0.03 | −0.42 | 0.02 |
50–60 | −0.72 | 0.05 | −0.72 | 0.13 | −0.73 | 0.08 |
60–70 | −0.59 | 0.05 | −0.58 | 0.11 | −0.57 | 0.08 |
70–80 | −0.29 | 0.02 | −0.21 | 0.04 | −0.17 | 0.02 |
80–90 | 0.11 | 0.005 | 0.16 | 0.01 | 0.20 | 0.01 |
90–100 | 0.22 | <0.01 | 0.21 | 0.01 | 0.22 | <0.01 |
Table 16.
Results of correlation analysis between slopes of land surface and changes in forest cover areas.
Table 16.
Results of correlation analysis between slopes of land surface and changes in forest cover areas.
Slope Intervals | If the Effects of Factors of 2nd Half of the 19th Century–1st Half of the 20th Century Were Maintained | If the Effects of Factors of 2nd Half of the 19th Century–2nd Half of the 20th Century Were Maintained | If the Effects of Factors of 2nd Half of the 19th Century–1st Half of the 21st Century Were Maintained |
---|
rij | p-Value | rij | p-Value | rij | p-Value |
---|
0–1.00 | –0.90 | 0.04 | –0.85 | 0.02 | –0.87 | 0.03 |
1.00–3.01 | –0.63 | 0.17 | –0.55 | 0.08 | –0.57 | 0.11 |
3.01–6.27 | –0.53 | 0.05 | –0.44 | 0.02 | –0.47 | 0.03 |
6.27–10.53 | –0.54 | 0.03 | –0.43 | 0.01 | –0.45 | 0.02 |
10.53–15.79 | –0.40 | 0.04 | –0.27 | 0.02 | –0.26 | 0.02 |
15.79–22.05 | –0.16 | 0.11 | –0.02 | 0.05 | 0.01 | 0.05 |
22.05–29.57 | –0.07 | 0.19 | 0.06 | 0.10 | 0.10 | 0.09 |
29.57–39.10 | –0.05 | 0.22 | 0.06 | 0.12 | 0.11 | 0.11 |
39.10–66.1 | –0.03 | 0.24 | 0.08 | 0.15 | 0.11 | 0.14 |
Table 17.
Correlation analysis results between slope and forest cover areas.
Table 17.
Correlation analysis results between slope and forest cover areas.
Elderships | 2nd Half of the 19th Century | 1st Half of the 20th Century | 2nd Half of the 20th Century |
---|
rij | p-Value | rij | p-Value | rij | p-Value |
---|
Eržvilkas | −0.72 | 0.03 | −0.56 | 0.11 | −0.66 | 0.05 |
Girdžiai | −0.75 | 0.02 | −0.66 | 0.05 | −0.19 | 0.63 |
Juodaičiai | −0.86 | 0.03 | −0.85 | 0.03 | −0.76 | 0.08 |
Jurbarkai | −0.91 | 0.00 | −0.92 | 0.00 | 0.51 | 0.16 |
Jurbarkas city | −0.66 | 0.05 | 0.27 | 0.48 | 0.05 | 0.90 |
Raudonė | −0.59 | 0.09 | 0.90 | 0.00 | 0.91 | 0.00 |
Seredžius | −0.62 | 0.08 | 0.69 | 0.04 | 0.69 | 0.04 |
Skirsnemunė | −0.59 | 0.09 | −0.40 | 0.29 | 0.72 | 0.06 |
Smalininkai | −0.62 | 0.08 | −0.81 | 0.01 | −0.91 | 0.00 |
Šimkaičiai | 0.24 | 0.54 | −0.70 | 0.04 | −0.70 | 0.04 |
Veliuona | −0.58 | 0.10 | 0.22 | 0.58 | 0.28 | 0.47 |
Viešvilė | 0.90 | 0.00 | 0.84 | 0.00 | −0.54 | 0.13 |
Jurbarkas Distr. | −0.82 | 0.01 | 0.02 | 0.95 | 0.82 | 0.01 |
Table 18.
Permanent forest areas.
Table 18.
Permanent forest areas.
Elderships | Area of Forest, % |
---|
Eržvilkas | 11.5 |
Girdžiai | 23.1 |
Juodaičiai | 2.2 |
Jurbarkai | 36.6 |
Jurbarkas city | 3.8 |
Raudonė | 11.0 |
Seredžius | 12.2 |
Skirsnemunė | 16.0 |
Smalininkai | 8.9 |
Šimkaičiai | 16.1 |
Veliuona | 23.0 |
Viešvilė | 57.6 |
Jurbarkas Distr. | 22.6 |
Table 19.
Percentages of polygons with corresponding tree age of the total permanent forest cover area.
Table 19.
Percentages of polygons with corresponding tree age of the total permanent forest cover area.
Age of Trees, in Years | Eržvilkas | Girdžiai | Juodaičiai | Jurbarkai | Jurbarkas City | Raudonė | Seredžius | Skirsnemunė | Smalininkai | Šimkaičiai | Veliuona | Viešvilė | Jurbarkas Distr. |
---|
0–5 | 11.2 | 7.4 | 18.1 | 8.9 | 3.8 | 12.3 | 16.5 | 12.5 | 7.9 | 14 | 11.8 | 4.4 | 9.4 |
6–9 | 2.7 | 5.5 | 3.8 | 3 | 0.2 | 4.5 | 4.5 | 3.0 | 5.5 | 5.4 | 3.9 | 3 | 3.6 |
10–19 | 15 | 15.9 | 11.1 | 7.5 | 0 | 17.6 | 16.5 | 13.1 | 13.4 | 17.9 | 11.8 | 3.8 | 10.5 |
20–39 | 20.4 | 31.2 | 19.7 | 19.7 | 0 | 24 | 16.1 | 32.2 | 27.4 | 22.2 | 23.2 | 10.4 | 20.0 |
40–59 | 5.3 | 14.3 | 9.6 | 9.4 | 1.2 | 15 | 8.1 | 19.5 | 9.5 | 7.9 | 20.5 | 15 | 12.0 |
60–79 | 17.4 | 15.7 | 13 | 16.2 | 6.6 | 13.8 | 15.5 | 11.5 | 14.4 | 14.3 | 14.8 | 34.8 | 19.4 |
80–99 | 22.5 | 5.7 | 23.7 | 19.5 | 18.7 | 9.8 | 18.8 | 6.1 | 8.1 | 15.6 | 12.7 | 12.6 | 15.2 |
100–119 | 4.7 | 3.9 | 1.1 | 11.5 | 30.8 | 2.3 | 3.2 | 1.7 | 10.5 | 2.7 | 0.6 | 10.4 | 7.2 |
120–139 | 0.7 | 0.2 | - | 3.4 | 1.8 | 0.6 | 0.8 | 0.3 | 2.7 | - | 0.1 | 4 | 2.1 |
140–159 | - | - | - | 0.6 | 36.9 | - | - | - | 0.1 | - | 0.5 | 1.1 | 0.5 |
160–179 | - | 0.1 | - | 0.2 | - | - | - | - | 0.4 | - | - | 0.4 | 0.2 |
180 and more | - | 0.1 | - | - | - | - | - | - | - | - | - | - | - |
Table 20.
The area of permanent forest cover of forest areas of the 19th century, %.
Table 20.
The area of permanent forest cover of forest areas of the 19th century, %.
Elderships | The Area of Permanent Forest Cover, % |
---|
Eržvilkas | 19.7 |
Girdžiai | 34.3 |
Juodaičiai | 4.3 |
Jurbarkai | 53.6 |
Jurbarkas city | 43.7 |
Raudonė | 20.3 |
Seredžius | 27.2 |
Skirsnemunė | 34.1 |
Smalininkai | 62.8 |
Šimkaičiai | 24.4 |
Veliuona | 36.7 |
Viešvilė | 85.5 |
Jurbarkas Distr. | 38.1 |